10m AM Operation

Ignore what recently published 10m band plans may say - 10m AM is alive and well just above 29MHz with most 10m AM between 29 and 29.1MHz.

Many recent band plans talk of 2700Hz wide SSB in the 29 to 29.1MHz slot. This is rubbish written  by people who don't have a clue! Just take a listen between 29 and 29.1MHz next time the band is open and make up your own minds.

Write to your band plan scribes and ask them to actually USE 10m next time before putting pen to paper. I have written to the RSGB to express my displeasure with their latest 10m attempt:  they blame the IARU.  I see on the RSGB website they have made a half-hearted attempt to clarify 10m AM use - a very poor attempt in my view.

28 to 29MHz is plenty of room for narrow-band modes, even when there is a major contest or the band is wide open. There is space above 29MHz for AM, FM and satellites. 29 to 29.1MHz has lots of AM often with beautifully modulated signals: it is a pleasant change.

In a few years time the whole of 10m will be largely quiet again and we amateurs need to use it for local comms, Es, and the occasional N-S DX or risk losing it to CBers and taxis.

There are plenty of 10m projects on my main website.

No amateur radio

At the moment I am unable to do any amateur radio operation in my shack for the next few days.

Firstly, my shack  has been taken over to house my 2 year old granddaughter in her cot.

Secondly, the XP shack PC seems to have terminally died. It has served me well for very many years, but now is the time to replace it. The new PC is apparently ready and is in the process of being delivered.

My little granddaughter goes back home on Wednesday and my new PC is likely to arrive shortly afterwards. I will need to load WSPR and other software and check all is well with the new machine. As a 64 bit Win 8.1 machine, some software may prove incompatible.

PCs playing up

Both my PCs are playing up today.

Firstly, the Dell Inspiron 630m, XP OS, is getting very tired and refuses to boot up today.  Several keys are broken and sadly XP will shortly no longer be a supported OS.

Secondly my little Asus,Netbook with Win 7 Home OS, not used for several months, is taking forever to start, even on mains power. It may have to be returned. When new it was fine for portable, in-field, use with Spectran software, as long as ready-boost was used.

Now finally it is time to invest in a new PC for home use , so I am buying an i5 Inspiron 15R touch screen 1GB hard-drive, laptop, with 3 yrs hardware and software support. It should serve me well. We'll see.

New UHF beacon GB3UHF

I am looking forward to this new GPS frequency locked 432.430MHz beacon GB3UHF near Wrotham Kent (IO91) becoming active. It is to be co-sited with GB3VHF. It is at an interesting distance and should be copyable on my 2m halo, even though I shall be slightly off the main beam. Approved by OFCOM, it is now awaiting a site sharing agreement that could take some while. It is NOT yet on-air as far as I know. There is a real shortage of UHF beacons in the UK. GB3BSL (Bristol 432.934MHz)  is off air I believe.

The new beacon's frequency will be 432.430MHz to a pair of 3 el J-Beam yagis beaming roughly towards the Midlands (288 and 348 degrees headings). Being 3 el beams, the aim is quite broad.

See http://www.gb3vhf.co.uk/GB3UHFdetails.html

Back on 474.2kHz WSPR

Today I have returned to MF WSPRing., The antenna is currently my very short Marconi which consists of a very short vertical wire (1.5 to 2m?) with about 15m of wire run horizontally along the top of fence and trellis. This is a shorter (horizontal) distance than an earlier version that did not work well, probably because of foliage losses. The whole antenna uses the mains earth.

Matching is via a 110mm diameter loading coil and a 3C90 toroid to step up from 50ohms to several hundred ohms resistive.
 
So far PA3ABK/2 is a good consistently strong daytime signal at -10dB S/N with 0.5W ERP. There are very few G stations active, so no reports of my own signal yet.

UPDATE 2005z:  Only 2 stations copied (PA and DF) and just 3 reports from a single station PA3ABK/2.   Very disappointing so far. There is a lack of G stations active on WSPR this evening so far.

10m TEP?

PY2RN is putting in a COLOSSAL +9dB S/N signal on 10m WSPR at 1854z with 5W and I just wonder if this is perhaps TEP assisted? Chordal hop across the equator could account for the very low attenuation. Just a thought.

UPDATE 2206z:  WA6JRW in DM14he in California (8664km) was reporting my 2W WSPR at 2024z. The band is still open transatlantic here at this QTH at 2152z. W8QYT (5W 5807km) was a good +4dB S/N here at 2144z and he was spotting my 2W at -5dB S/N at 2138z.   I am still getting transatlantic spots at 2W as late as (at least) 2200z (4 transatlantic spots from the 2W 2200z TX burst).

One thing I have noticed  is signals on long 10m DX paths are often strongest just before the band dies out. This is often the most productive time with QRP power levels.

I stopped monitoring on the WSPR.net database at 2208z.

QSY to 10m

After a few days on 40m, I have QSYed back to 2W on 10m WSPR. 4X1RF is already spotting me  but no signals at any real distance are yet being copied apart from EX1UN  in central Asia.  Sunspot count is pretty good, so I expect some decent DX during the day. No JAs yet copied, which is a little odd.

UPDATE 1052z:  Just seen PY2RN in my log at 1038z at 9950km running 5W and I've just been spotted at 1050z by JH3APN at 9419 km.

UPDATE 1138z:  1118z saw my first stateside report, from WA3QJU at 5695km. At 1138z CX2ABP was copied at 11127km.

UPDATE 1610z: Very pleased to see my old work colleague G3WKW in the 10m WSPR log. 134km GDX path and copied 7 times between 1610z and 1806z.

Chinese SDR transceiver

Just seen this on a Russian site: http://www.cqdx.ru/ham/qro-qrp/chinese-sdr-based-hf-one-mkii-qrp-transceiver. Looks like an interesting rig.

See also http://yo9irf.blogspot.co.uk/2013/11/hf-one-mkii-cheap-mobile-transceiver.html

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRKY7_je5IJYmNzG8H0xyX_CQ2KcEJlA8f0yq9DbPZ3pRMq2M6IzSdB1Pl77duOAoN0-fOW8SLgzkg7RiCJXeHxre1N7VRGLVsdEdeZcrzgBdOKFzH7Pnmn7vCMbFLJdh0Kau6oaGsqvIe/s1600/HF-ONE-MKII-QRP-Transceiver-Kits+(3).jpg

Ten-tec Argonaut VI

http://cdn2.bigcommerce.com/server1500/ooh0w/products/358/images/724/539_web_photo__37987.1373600182.1280.1280.jpg?c=1

Although outside my price range at £995 in the UK, the Ten-Tec Argonaut VI gets rave reviews from its fans. On www.eham.net it usually scores very well apart from those who hate the lack of 60m and 12m coverage.  I cannot see me ever buying one but if you want a QRP rig (10W) mainly for home use, this could be for you, if you can afford one. RX performance is certainly very good.

40m WSPR - using 500mW

Since last evening I QSYed from 6m down to 40m using just 500mW to my low Par 10/20/40m end-fed antenna. I am pleased to report that my signal was copied by K9AN at a distance of 6505km during the late evening. I copied a PY (Brazil) at -10dB S/N (9550km) but he was running a ridiculous (for WSPR) power of 50W.   5W would easily have been copied.  Perhaps he is new to WSPR does not realise just how effective WSPR is yet?

Some of the reports below show 2W before I reduced power to 500mW, but best DX reprts were at the 500mW level I am pleased to say.

40m unique WSPR spots - last 24hrs