How far down is my 472kHz earth electrode antenna on a Marconi?

This evening I have been noting my WSPR S/N reports from stations across the country and nearer Europe using my 9m long Marconi antenna and comparing these with the reports last night when I was using just the 15m baseline earth-electrode "antenna". I crudely plotted the "improvement factor" in dB on a polar plot. Each dot represents a station reporting my signal with the dB improvement over the earth-electrode antenna plotted on a 0-20dB scale out from the centre.

Although in some directions the difference is very little, in other directions the reports are up to 14dB better on the (omni-directional) Marconi.

Stations with dB improvement using the Marconi antenna

M0BMU 10dB
G0KTN 6dB
G3ZJO 5dB
G3WCB 10dB
DL-SWL 2dB
G4HJW 6dB
M1GEO 14dB
G7NKS 6dB
M0LMH 11dB
G0MQW 10dB
G0MQW 10dB

My conclusion is that the earth electrode antenna is behaving somewhat like a loop with directionality along the line of the earth-electrode baseline and a null off the sides. With stations receiving me off the sides there is most improvement with the Marconi, and less difference with stations end-on who were getting a reasonable signal with the earth-electrode antenna.

CONCLUSION: the simple, stealth, earth-electrode antenna is a VERY useful antenna on 472kHz as long as one is prepared to accept a 2-14dB loss compared with a reasonable Marconi.

RFID chips and credit/debit cards

Many credit and debit cards now have embedded RFID chips to allow contactless transactions in cafes. bars etc. Did you realise that your card's RFID chip could be a way of cloning your card's number and expiry date? Neither did I.

Watch this video to see a demonstration of just how easy it can be to someone with the right technology at his disposal.Sounds like a security loop hole that needs fixing fast.

UPDATE: I am reliably informed that this is not an issue in the UK.

A Marconi antenna on 472kHz

So that I can better quantify the performance of my various earth electrode "antennas" I have today erected a 9m long top loaded Marconi vertical for 472kHz. Initial antenna current measurements suggest the ERP is up around 10dB to around 100mW. My plan is to run this overnight again and then tomorrow compare the signal reports against those with my smaller compromise Marconi and my two earth electrode antenna configurations.

Even more fascinating 472kHz experiment

Following on from yesterday's tests, today I started a further test using an earth electrode "antenna" on 472kHz WSPR.

This time I used 2 ground rods in the soil separated by 15m of wire (fed directly from the transverter output at 50 ohms) and powered entirely from a battery supply - PC, FT817, transverter, SignaLink interface - so that there was no connection whatsoever to the house mains earth or copper pipes in the house. The power out would have been slightly lower (lower supply voltage) and the baseline 25% shorter.

472kHz earth electrode "antenna" system in garden

So far, results are almost identical to those obtained yesterday when one side of the earth electrode system was connected to the copper pipes in the home on one end.

My best DX WSPR report this evening with 10W RF out from the transverter into the 15m separated electrodes is G0KTN at 210km. ERP is in the low mW region at best. On RX DJ8WX has been copied at 643km.

Although a large Marconi antenna will be far better, this set-up certainly works and gives highly credible results. Considering just how simple this is I hope others experiment with the earth electrode "non antenna" and see how they get on.

UPDATE: Best DX report of my few mW ERP signal with 15m spaced earth electrodes was from DL-SWL at 701km. I am copying lots of signals including SM6DHZ and DK7FC even after breakfast time. Amazing.

Analysis of 472kHz antenna tests today

With several hundred WSPR spots of my QRP signal received today on 472kHz, I have tried to do a crude analysis of the difference in performance between my short (1/100 wavelength long) Marconi and my earth electrode (ground) antenna. I did this using MS Excel. Now I have forgotten most of the things I knew about Excel, so this is basic stuff here!

I plotted the maximum and minimum signal reports for each type of antenna for a number of different reporting stations and plotted a graph showing the difference and the angle the station is from me to see if there was a clear directionality in the earth electrode system.

Analysis of signal levels with short Marconi and Earth Electrode antenna at 472kHz

Conclusion? I'm not sure, although the difference between the 2 antennas varies from as little as 0.5dB (PA3ABK) up to 16dB (M1GEO) with an average additional loss of around 7dB. Can you see any indication of directivity in the earth electrode antenna? I am assuming the Marconi is omni-directional, which of course may not be the case.

Not bad for an antenna that is invisible to the neighbours and still is capable of getting reports (so far) to 701km away with a few milliwatts ERP.

Codar AT5 transmitter

Image on G3XTZ's Radio Museum website

Way back when I was first licenced for VHF/UHF only in early 1967 as G8AWG, I used to operate under supervision at the HF station of Bill Honeywill G4PJ in Salcombe on 160 and 80m. Bill Had an old KW Viceroy TX and a Codar AT5, which was "state of the art" in its day.

The AT5 was a small valve TX producing around 10W on 160m and 80m. Using the AT5 we could work right up the English Channel in daylight on AM and CW over a mostly sea path.  I noticed a page about the AT5 on the W3EEE website and it took me back 45 years.

Image on G3XTZ's Radio Museum website

There was a companion RX called the T28 which I owned at one time - I got it as a university prize for writing one of the better final year theses - which was made using a couple of Mullard modules. The T28 was nothing special, but did make a useful tunable IF for my 2m converter used to copy signals from Oscar 6 and Oscar 7 amateur satellites.

Nowadays in a volume less than half that of these rigs one can have a complete multi-mode HF-VHF-UHF transceiver with performance far exceeding the AT5 and T28. We forget how much our hobby has changed.

Earth electrode TX/RX antenna at 472kHz

Signals received on 472kHz WSPR using the earth electrode "antenna"

This afternoon I've been experimenting with my 20m spaced earth electrode system (used at 8.97kHz VLF), but this time on 472kHz WSPR. One electrode is an earth rod at the bottom of the garden and the other is a connection to the copper pipes in the home. Although I need to analyse results more carefully after an overnight run, the system certainly works with spots of my TX already received across England and from Holland. G4HJW 9km away is as nearly strong on the earth electrode system as on my vertical Marconi.

UPDATE 1715gmt: just been spotted by DL-SWL at 701km!!!

I honestly do not understand why this system - with wire no higher than 1.5m in the air running along the fence between the earth rods - works as well as it does. This is a short video showing the system in operation.

The ERP with the earth electrode system cannot be more than around 5mW which makes the performance all the more remarkable.

Some of the TX reports this afternoon with the 472kHz earth electrode system

Half century reached on 472kHz with 10mW ERP

After less than a week on the 472kHz band, I see that my tiny QRP signal has now been copied by 50 unique reporters in 8 countries so far with the best DX over 1000km.

If anyone thinks they have no chance on this new MF band then please note my antenna has just 6m outside the house which is vertical - the other 6-8m is in the loft against copper pipes and wires. This wire is just the coax to my 10m halo taped to the aluminium pole and my ground just my central heating copper.  ERP is around 10mW from my transverter producing around 10W (i.e. about 30dB antenna efficiency loss because of the short size and compromised feed). The ATU is still just a ferrite rod coil on my desktop! I tune the antenna for maximum current and do not have an SWR meter for this band ( when matched the PA runs cool and the antenna current is highest).

My apologies for the small type size below, but I had to reduce the browser size to get all the reports on a page I could screen capture. Getting a signal out on MF is honestly not difficult at all.

50 unique reports on 472kHz WSPR so far with 10mW ERP

In the next few days I want to try my earth antenna (20m spaced earth electrodes connected by a wire only 1.5m above ground) used on VLF earth-mode TX to see how reports compare. Tests on 500kHz suggested reports were around 8dB down on my loop used at that time, but I have not yet compared results against my compromised 1/100 wavelength high vertical. It will be intriguing to see how I get on.

First JT9-1 QSO on 472kHz

This afternoon I had my first digital 2-way QSO on the new 472kHz band using JT9-1 mode created by K1JT. The contact was with G3ZJO in IO92. Solid -15dB S/N reports were exchanged. I am still getting to grips with the JT mode procedure.

QRP JT9-1 QSO with G3ZJO today on the 472kHz band

 I also tried to work G3KEV on CW but he was unable to hear my QRP signal. I will try for more JT9-1 QSOs over the weekend.

Chinese all-mode, all band handheld for under £300

The Yintong HVU1 is an all-mode, all band 1.8-1296MHz handheld designed as a real competitor to the FT817, KX3 and Ten-tec Argonaut VI and priced at around £299 in the UK and $299 in the USA. It comes with a 3 year warranty.

Small in size (about 80% the volume of the FT817) with Li-Ion battery, internal auto-ATU, OLED colour display, speech processor, DSP audio processing, with full support for digital modes like PSK31, JT65 and other WSJT modes. Power out is 5W pep on all bands apart from 1296MHz where the power is 2W pep. Control of the rig by PC is via USB. Free CD software is supplied with the rig to allow easy memory programming and to set up digital mode interfacing.

It is just about everything QRPers have been looking for at a price that people can afford, except that I woke up and realised I'd been dreaming.

Happy New Year everyone .............and dream on.
                                                                                                   

First CW QSO on 472kHz

Although my local noise level is a little lower on 472kHz than on 500kHz it is still not low, so working stations with the current TX antenna (using it on RX and TX) is not the best of set-ups. Nonetheless, this evening I had my first 2-way QSO (on any band) of 2013 and this was on 472.5kHz CW with G3XIZ in Biggleswade. We exchanged 579 reports, although I was rather generous with my report really because of the local SMPSU noise. Also heard was G3YXM who was rather weaker than Chris.

I am now continuing with WSPR beaconing and will run the beacon (TX and RX) through the night for the first time on the new MF band. So far my best DX report is from Germany, but I would dearly love to be copied, if just once, by TF3HZ in Iceland. Haldor is monitoring and it is just about at (or just beyond) the limit of range with my 10-20mW ERP.  With QRP I have learned that nothing seems to be impossible with a bit of perseverance and good luck.

Hello 472kHz!

Today I did my first proper transmissions on 472-479kHz, although I did operate for a few hours before Christmas when there was some confusion over the NoV start date. Results today have been excellent with just ~10mW ERP from the short vertical antenna.

14 unique stations reporting my QRPp WSPR today on 474.2kHz

 Best DX is 990km, a very promising start on the new band. In addition, I appear to be suffering less noise on the new band than on 500kHz so I have been able to copy 6 unique WSPR stations so far.

In summary, a good few hours on the new band.

Goodbye 500kHz - it was good to know you.

This evening the 500kHz band is being withdrawn from UK amateurs at midnight, as it is in most other countries too, to be replaced by the 472-479kHz band. So, this evening is the end of an era.

With 2 young grandchildren staying with us for a few days (and using the shack as a bedroom), opportunities to get on the band have been very limited, but I did manage an hour of WSPR beaconing around tea time tonight as my way of saying "farewell" to the band. There were plenty of stations active as the reports below indicate.

So, I'll be QRT for a few days then starting up on 472kHz, although if I get a chance I shall be WSPRing during some of the day on New Year's Day.

Stations receiving my 10mW ERP 500kHz WSPR signals this evening

Recording the last hours on 500kHz?

Back in the late 1940s G5UM and others recorded the last few hours of operation on the old 56MHz (5m) band on an old 78rpm disc. Sadly this disc and copies of it appear to be lost forever.

I am very much hoping that a few stations in the UK and Eire will record the last hours on the 500kHz band which is being withdrawn on Dec 31st for ever, to be replaced by 472-479kHz.  Such recordings are a valuable piece of amateur radio history which will be treasured in years to come.  It would be a pleasure to pull such recordings together for posterity, but I shall be unable to listen myself because I'll not have access to the shack at that time.

If YOU can listen between 2300-2400GMT on Dec 31st and make a few recordings of the CW activity, please send me copies and I will produce a CD or MP3 file of them all.

472kHz (quiet) RX preamp

When the grandchildren and family have all gone home next week, my first project will be to improve the RX antenna system for 472-479kHz receive. As mentioned before, I am suffering badly from SMPSU noise pick-up inside the house, so plan to install a magnetic loop and preamp somewhere towards the bottom of the garden in an attempt to minimise pick-up from my own home and from neighbours. With a loop there is also the ability to sharply tune the antenna and to null interference from the worse directions. The circuit I propose to use is a version of my 9kHz tuned preamp, which has been used to copy G, DL and OK amateur stations on 8.97kHz last year. The loop will simply be retuned to the new MF band.  Not sure whether series or parallel connection to the loop will be better as both should work depending on the FET stage configuration (common base or common source).

Proposed tuned preamp, but with values changed for 472-479kHz

Last days on 500kHz

With just a few days left before the 500kHz permits are withdrawn for ever I've been doing a last gasp bit of WSPR beaconing. It is not easy to get on as we have grandchildren sleeping in the shack, but I managed to get on for a couple of hours early this evening.

Recent 500kHz WSPR reports (10mW ERP)

Reports were received from G, PA, DL and F stations. My local noise from the central heating controller prevented me copying much on the band. Before many days I shall have to erect a separate RX antenna for 472kHz.

A Happy Christmas

A very Happy Christmas to everyone who reads this blog. Today has been spent with some of the family enjoying good food, drinks and games. More of the family comes here tomorrow and yet more later in the week. We are now sitting down watching the typical Christmas TV fare in front of the roaring fire.

Quietly in the background, my WSPR beacon has been running with best DX 2-way reports with Brazil and best reception the Nambian WSPR beacon. 

One of my presents was a book of maps of the South Devon Coastal Footpath and another the second edition of QRP Basics. In a later blog I'll review the new version.

But now it is back to mince pies and a cup of tea!

5MHz NoV

A band that I have never tried before, apart from brief periods listening, is 5MHz. So, this afternoon I applied for an NoV, which was received by return email. Not sure what kit I shall use to get on the band (or when) as nothing I have covers 5MHz TX. Perhaps another transverter design is called for.

V5/DK1CE Namibia

Whilst in the shack this morning I turned on the FT817 to hear an unidentified (for nearly 10 minutes) CW station working people and giving 599 reports in the main. I called a few times and eventually got a 599 report, still not sure who the station was. Then, finally, he gave his callsign V5/DK1CE in Namibia. All the more pleased now I know that "3 blobs" on the FT817 is just 2.5W out to the halo antenna. And another DXCC entity this year.

FT817 "power blobs" question

Having owned my FT817 (original version, not ND) for nearly 12 years I am almost too embarrassed to ask this question now.

http://upload.wikimedia.org/wikipedia/commons/5/55/Yaesu_FT-817_(1).jpg

When checking an old Bird RF power meter today I measured the power of my FT817 on and off a PSU at all power level settings. All these years I had assumed that "3 blobs" on the screen (when on a PSU) meant that I was putting out 5W. What I measured was closer to 2.5W. This did not change when the PSU was disconnected: still 2.5W. Then I pressed the button to "no blobs" and the power went up several dB, to I assume a nominal 5W. When on batteries it was "blinking 3 blobs". having re-read the FT817 (original) manual I was none the wiser: it does not mention a "no blobs" setting.

I think all these years when I had assumed my DX was being worked with 5W I was actually using just 2.5W. It looks like I should have gone to the "no blobs" setting with a PSU to get the full 5W.

So, can someone please clarify what power the FT817 should produce at all the different "blob" settings on batteries and on a 13.8V PSU?

UPDATE: I have the answer from Pete M3KXZ

Hi Roger.

On PSU:
- no blobs, output is 5W
- 3 blobs, 2.5W
- 2 blobs, 1W
- 1 blob, 0.5W

On internal batteries, the radio will default to "L///" and output 2.5W. If you
select high power, you will get 5W with "///" blinking. The other blobs are same
as for PSU.

I always run off external battery pack and the max power setting shows no blobs,
until the voltage starts to drop a bit when it automatically goes to "///"
blinking.

Well I'll be damned!  So for 12 years nearly I've been running 3dB less than I thought.

Birthday card co-incidences

Today I celebrate my 64th birthday, although it is only 5 minutes since I was 18, so be warned: time passes very quickly and speeds up as you get older!

One strange thing today was some of the birthday cards. When in Oxford a few weeks ago my XYL bought me a card for my birthday, from the OXFAM shop, with the title, "Instructions are for wimps" showing a man operating 1920s radio gear - very apt for a radio amateur. Well, blow me down, I got the same card from 3 people! If you want one to send to your friends, they have plain insides so can be used for an occasion, they come from  www.cathtatecards.com.

Now, to my mind, the operator looks a bit like Julian G4ILO. Perhaps it was his grandfather!

Surplectronics - useful source

Steve G1KQH has just pointed me to Surplectronics who supply all manner of electronics parts at VERY reasonable prices. Several of the crystals they stock are just 25p each and 50MHz clock oscillators (packaged, complete) just 99p.

Tenbox 10m AM crystal

Although I've not finished off the Tenbox 10m AM transceiver yet- too cold in the workshop and too many Christmas preparations! -  I have been looking around for some low cost crystals that would be suitable for the transmitter. Ideally, I was looking for a low cost source of HC49 crystals on 29.05MHz but have not found any. Then I spotted that the German QRP-shop has 29.000MHz crystals at a reasonable 5.5 euros. I may order a couple so I can complete a pair of QRP 10m AM transceivers. I have used QRP-shop before and they give good service.

The Tenbox may not get finished until the New Year now as we have family here for the next 10 days more or less. When there are 4 grandchildren around, amateur radio takes a back seat, especially as my operating shack is used as a bedroom for the 3 and 5 year olds.

JT65-HF QSO

It is some while since I last tried JT65-HF mode for a QSO, so this evening I had a go on one of my difficult bands in the evenings (because of the local noise level) i.e. 80m. A short listen and reply to DK6CS resulted in a very solid QSO both ways with QRP. I must give this a go on the higher bands, although I find the 1 minute TX/RX slots rather slow, with a minute to know if your response to a CQ has been successful. Still it works with weak signals and allows me to work stations that might not otherwise be possible.

JT65-HF screen on 80m a short while ago

Countries worked this year

There is no way I would call myself a DX chaser at all, preferring to build simple kit and use it to experiment rather than "countries chase" as such. Nonetheless, I thought I'd look back through my logs to see how many countries I'd actually worked on each band during 2012 with my 5W or less QRP.  It is quite surprising to see how many countries I did NOT work and also how few QSOs I had on some of my less favourite bands. At the present time it looks like I worked 46 different DXCC countries with 1-5W SSB/CW. Most QSOs were SSB. By far the most countries were worked on 10m. This season I did not do my usual sport of seeing how many countries I could work on 6m and ended up only working 6 countries this year! Some years I'd worked almost 50. Notice also how few countries I've worked on 160m - 12m: hardly any!

Not included in this list are all the WSPR spots I have received and given around the planet. There are several stations/countries with which WSPR spots have been exchanged that have not been worked in 2-way QSOs.

There is no doubt in my mind that had I concentrated on DXCC with 5W it would have been possible to work well over 100 entities this year even with my very compromised antenna system and 5W or less. Maybe one year I'll give DX working a real blast just to see what I can work, but really I prefer to leave this to others in the main and enjoy other aspects of our wonderful hobby.

Selling my Elecraft K1

For some years I've had the Elecraft K1 transceiver that I made. It covers 40, 30, 20 and 15m with a built-in auto ATU.  This is a nice little CW radio, but I rarely use it, preferring to use home designed kit on MF and 10m these days. It has always been used at home and is in as-new condition.

This afternoon I fired it up, using the coax feeder to my 10m halo as a vertical and tuned this against my central heating ground using the internal ATU. It is a far from optimum antenna and suffers from QRM from my central heating controller's SMPSU right next to the feeder on RX.

RBN spots with my K1 today (intermittent operation)

Conditions were not great but several reports were seen on the Reverse Beacon Network (see above) and half a dozen QSOs are in the logbook on 7MHz and 10MHz (in DL, I, EI and LX) in not a lot of actual operating time: we had neighbours around for Christmas nibbles and drinks most of the day!

I really ought to think about selling the K1 as I don't use it enough to justify keeping it.  Ahead of my move next year I should be doing more de-cluttering as well, HI.

Good review of the Argonaut VI by K4SWL

Although I was critical of the price of the Ten-Tec Argonaut VI QRP transceiver at $995, I see it has received a rave review on the QRPer blog today from K4SWL who was one of the beta testers.  In his opinion it is better than an Elecraft K2 with a receiver that is likely to be highly rated in the Sherwood tests.

The Argonaut VI image on the QRPer.com website

As he points out, this is not really a "trail-friendly" radio. Rather, it is a small radio designed mainly for home use where its excellent performance, size (a bit smaller than the K2) and good ergonomics make it ideal. He praises the simple uncluttered controls and ease of use and the nice flywheel tuning knob. But, overall he rates it and likens it to a miniature Ten-Tec Eagle with superb DSP performance and RX dynamic range.

The lack of 60m and 12m and an auto-ATU disappoint me, as does that high price tag, but it does look like this is a very capable little radio. It is just such a pity that it is so expensive. It will be very interesting to see a side-by-side comparison against the KX3 in the coming months.

See also the eHam.net review at http://www.eham.net/reviews/review/115480.

Now if only Father Christmas would bring me either a KX3 or an Argonaut VI, HI.

472kHz WSPRing (now QRT)

It is now clear that the issue of my NoV for today's date was an error, either with OFCOM or the RSGB and that there was, sadly, no intention of releasing the band earlier than Jan 1st 2013. So, I have now gone QRT on the band again until the new year. I question why an NoV should be needed at all: why not just release the new band in the UK to all full licence holders and save the time wasting and paperwork chasing!

In the few hours of operation with my antenna very wet and lossy, so the ERP was around 10-20mW only at best, results achieved were very promising.

472kHz WSPR TX results today (10-20mW ERP)

Reports of my WSPR signal were received from 4 countries with the best DX being from Germany and the far NW of Eire.

I'm now back on 500kHz WSPR for the rest of the evening.

472-479kHz NoV received

Today I received my 472-479kHz NoV via the RSGB website. The NoV for 5W eirp (about 20dB more than I can run!) seems to indicate that the new band may be used by NoV holders immediately judging by the date of issue.

There is some confusion as the OFCOM website says:
"However, as a result of the World Radio Conference, under Agenda Item 1.23 amateur radio has been given an alternative allocation, on a secondary basis, of 472 479 kHz. We propose that Full Licensees should be able to to apply for an NoV to operate in this band from 1st January 2013. Application can be made online at http://www.rsgb.org/operating/novapp/nov-472-479-khz.php" 

My official OFCOM NoV says applicable from Dec 20th start date so I am allowed to operate from today unless told otherwise later by email or phone from OFCOM. This may be pedantic, but they should have checked before sending out the form.

My first WSPR reports have been received from PA3ABK/47 at around -24dB S/N with my ERP currently around 10mW only (too much wet on the antenna). Also received a report from G8HUH (250km) and PA3FNY (360km).

It now seems that the official 472kHz NoVs issued this afternoon (mine was this morning)  now state a Jan 1st 2013 start date.  So, am I legally operating I wonder? If the world ends tomorrow, at least I've got a few 472kHz reports in the log, HI.

10m WSPR today

Today my 200mW from WISPY beacon was not enough on 10m to get any reports. So, I went up to 5W with the FT817 and managed a few reports this afternoon. Conditions were not good. Nonetheless reports came in from North and South America and from Germany.

10m WSPR reports today with 5W and halo

The ISWL

Many here will not be aware of the International Short Wave League (ISWL) but at one time this was THE club to belong to if you were interested in shortwave amateur and broadcast listening and transmitting. At one time it had a great number of members from all over the world.

Today the ISWL is still going strong, albeit not as large as it once was, but they produce a good A5 full colour magazine packed with articles and news every month called Monitor. Unlike most amateur magazines, this has good coverage of shortwave broadcast news and reports as well as lots for SWLs and radio amateurs with monthly RX and SWL reports. The ISWL offers a number of other benefits to its members and you may like to consider membership. The magazine has few adverts and is a real amateur/SWL magazine, rather than a shamateur magazine for those with deep pockets. Like the GQRP club, the ISWL is run totally by volunteers. I like its ethos.
 
Membership is £18 a year for the paper magazine version but just £12 if you take the magazine electronically.

First QSL cards at G3XBM

Earlier this evening I was thinking about QSL cards. I send out very few paper cards these days (although hope to send out more after I move next year and have the chance of putting a nice windmill on the card!) but was trying to remember the very first QSL cards I ever received back in my SWL days in the early 1960s.

If my memory serves me right, the first ever QSL card came from Radio Nederland like the one on the left which had a flamingo and a windmill on it.  It was for reception on my shortwave crystal set. Subsequently I got several more cards using the crystal set and it became quite a challenge to see how many countries I could confirm with QSLs using the crystal set.  Although I heard stations worldwide - genuinely worldwide, not via relays - such as Radio Australia, All India Radio and Radio Havana, I don't think I ever managed any cards for crystal set reception beyond Europe.  My first ever amateur card was from a station in London that I copied on 28MHz in South Devon. I cannot remember the callsign sadly, but probably still have the card somewhere.The first card for a 2-way QSO was from my mentor G4PJ who had a shack right on the water's edge in Salcombe. His earth rod when straight from the shack into the salt water, so his signal was excellent even on my crystal set at 4 miles.

I still enjoy getting cards from the bureau and the quality of some cards these days is remarkably good and a far cry from the thin paper cards from the USSR when I was first licenced, although these were just as prized.

472-479kHz NoV Applications

The RSGB now has a link on its website (although at this time it does not appear to be working, but it did earlier for some) for the form to apply for an NoV to operate in the UK on the new 472-479kHz band.

This is the link I have http://www.rsgb.org/operating/novapp/472-479-khz-nov.php

I have yet to succeed and get my NoV application through, but hope to do so before Jan 1st 2013 when the band will be available to full UK licence holders as long as they have the NoV.

Dell PC update - a grateful customer!

You may recall that I wrote to the MD of Dell last week after getting nowhere with my 4 year warranty claim for replacement of an intermittent power socket and was pleasantly surprised when the corporate office offered to arrange for my laptop PC to be repaired free of charge.

Dell Inspiron 1545 laptop

Well, today the Dell service engineer turned up and replaced the WHOLE motherboard and the DC PSU. I am happy to report everything is now working well.  The engineer was courteous and efficient. Dell even rang from India to check the engineer had turned up and the job was done.

So, I'd like to put on record that I am, in the end, pleased that Dell performed so well. But, as a comment below points out, it took a carefully worded pleading email to the MD to get them to see sense and learn that the customer should be treated fairly and with respect.

WISPY reports

For the first time in a few weeks I set the WISPY 200mW 10m WSPR beacon running to see what reports I got whilst getting on with jobs.

It is fascinating that G8KNN who is just 12km away often gets me at similar levels to the reports I get from K1OF who is 5455km away, all due to the vagaries of HF propagation.

Ten-Tec Argonaut VI - at $995 FAR too much

Ten-Tec has now got the new low power HF transceiver, the 10W Argonaut VI listed on its website with details about its specification and how to place an order. It looks a neat, clean, simple radio and I believe it is not much bigger than the FT817.

Not having ever used Ten-Tec rigs and knowing that many people very much like Ten-Tec products, I cannot comment on how good this new radio is likely to be. However, I do feel qualified to comment on the price.

$995 for the basic radio (I guess around £995 here in the UK?) sounds far too much. I'm not sure this includes a microphone. The KX3 is a similar price yet covers ALL the HF bands and 6m as standard, with an optional 2m module, auto-ATU, battery charger and internal battery pack.  It has a more comprehensive features set and, probably, a higher dynamic range (i.e. better) RX.

The Argonaut VI does not cover 5MHz, 24MHz or 50MHz, even as options. There is no provision for an internal auto-ATU.

In my view, these omissions are unacceptable in a new HF QRP rig. The 12 year old FT817 covers ALL HF bands, and 6m,2m and 70cms with ALL modes yet is considerably less expensive. OK I expect the Ten-Tec has a better RX than the FT817, but to be honest I am pretty happy with the FT817 which hears most things and manages to hold its own from 136kHz (with a preamp) to 432MHz pretty well on RX.

To say I am disappointed with the Argonaut is an under-statement. Why, oh why, didn't they get this onto the market at a highly competitive $695 instead?

HF conditions

It is December 2012 and we have either have just passed, or are just approaching, the sunspot maximum for cycle 24. Conditions cannot be called fantastic can they?

Some of you with long memories may recall the BIG peaks of the late 40s and 50s and look back at them fondly.  I think we have no choice but to accept that those days have now gone for a generation and we have to make the best use of our bands as they are and will now be.

Even with much lower sunspot numbers the higher bands will still be able to support DX more often than thought. WSPR beaconing through the full solar cycle may reveal some surprises. In many ways the quiet times offer more interest although monitoring 10m for days and days on end and hearing just noise can be disheartening! This is when WSPR will be especially useful.

Anyway we are still near the peak and there is DX to be worked so let's enjoy it!

More WISPYs on 10m

The G4SFS version of WISPY

Yesterday I received a nice email from Peter G4SFS who told me that he and Dave G6WZA had made a couple of WISPY 10m WSPR beacon TX units using the schematic on my website. A few values changes were needed - not unexpected - but that they are now working well and receiving spots from distant monitors. This is a photo of one of them. WISPY is a simple QRP WSPR beacon for 28MHz using a low cost 14.060MHz crystal and inexpensive 2N3904 transistors throughout.

Conditions on 10m have not been too great of late, although I did exchange reports with PY2SDR at 9616km and 4X1RF. Interestingly, there have been a few early evening WSPR reports from DL which I assume are probably a result of wintertime Es propagation.  At this time of year there is a mini-peak in sporadic-E propagation, so it is worth keeping an eye on 50MHz and 70MHz too.

Dell - they listened

A few days ago I mentioned my run-in with Dell support and their refusal to repair my laptop's power connector socket under their 4 year hardware warranty claiming it was "wear and tear". Well one of my readers Mark G0NMY kindly sent Michael Dell's email address michael@dell.com - he is the founder and MD - so last night I wrote a well reasoned letter to him explaining my disappointment with the level of customer service and why I believed they were wrong.

Blow me down, this morning I got a phone call from the corporate office saying they had arranged an engineer to come out next Tuesday to fix the laptop free of charge!  To say I was amazed is an understatement. It took conversations with 4 people and an email to the MD of Dell to get the correct response but, bless them, they've "come good" in the end.

So, thank you for listening Dell. You are in my good books again.

Updated 472-479kHz countries list

Following feedback, Rik Strobbe ON7YD updated his list of countries with (or about to get) access to the new MF band as follows:

Monaco (18/05/2012)
Malta (11/06/2012)
Germany (13/06/2012)
Philippines (30/08/2012)
Slovakia (01/09/2012 ?) - special licence(s)
Czech Republic (01/09/2012 ?) - special licence(s)
Sweden (01/10/2012) - special licence(s)
Norway (30/10/2012)
Greece (01/11/2012)
New Zealand (20/12/2012)

Australia (01/01/2013)
Denmark (01/01/2013)
The Netherlands (01/01/2013)
UK (01/01/2013)  - available to full licence holders by NoV
Switzerland (01/01/2013)
Finland (early 2013)
Spain (early 2013)