LF disappointment

Yesterday evening and overnight I was on 136kHz WSPR RX with a preamp in circuit. Only 2 stations were spotted - G3XIZ (46km) and G8HUH (250km) and, if I am honest, the preamp made little difference, whereas I was hoping for much more.

With G3XIZ there may have been a slight improvement but with G8HUH he was no better. I am not quite sure what this is telling me. I think it means external noise is the limiting factor at this QTH. Unless I take further steps to reduce the external noise I am unlikely to spot many more stations. There was one station on OPERA (G3XDV?) who was quite strong, but I did not have any OPERA software running. I shall try again tonight. If possible, I'll run both WSPR and OPERA software at the same time.

136kHz WSPR RX

Thanks to the great kindness of an individual who shall remain nameless, I am looking on 136kHz WSPR with better sensitivity. This amateur did not want me to pay, but gave it in the true spirit of amateur radio. There are some very kind people out there. In my experience, the true spirit of our hobby is alive and well - thank you.

At some point in the future I hope I can be as generous to someone as many people have been to me in recent years. A great many people have shown me kindness and I am so grateful for their help in so many ways.

Results of 630m WSPR RX experiment with earth-electrode "antenna" in ground.

A couple of Gs came on. G3XIZ (46km) was 2-3dB better S/N on the earth-electrodes than on the compromise vertical. He is end-on to the "loop" in the ground. G6AVK was not copied at all. He is orthogonal to the "loop" in the ground. I was quite surprised not to spot him at all though.

Conclusions? The earth-electrode "antenna" in the ground is quite effective at 136kHz, but more directional.

136kHz WSPR RX using the earth-electrode "antenna" in the ground

At about 1915z I started up on 136kHz WSPR RX using my earth-electrode "antenna" in the ground. The nearby (in frequency) commercial station is stronger on this than on my compromise vertical. It will be interesting to compare results.

136kHz WSPR RX

Even with my unbelievably poor system, I managed to spot 4 unique stations on 136kHz WSPR RX in the last day. WSPR is a wonderful mode.

Next season I really must try a miniwhip on 136kHz and 472kHz RX.

Many years ago I received 136kHz QRSS3 (sent from home) on a miniwhip mag-mounted on my car. Despite the very low ERP, it was clearly copied the far side of Cambridge (20km?) and I stopped. Much further would have been possible.  I am pretty sure this was using my earth-electrode "antenna" in the ground as the TX antenna. As far as I am aware, I used this E-field probe on RX on the car roof. This fed the deaf (at 137kHz) FT817.

136kHz WSPR RX - trying again

I have optimised my settings and may have gained a few dB. My RX is currently monitoring 136kHz WSPR with the shack PC on internal batteries so the noise floor is pretty low. As someone said in a comment to an earlier post, I'd definitely be better with a miniwhip on RX. Maybe for next season?

UPDATE 1337z: No spots.

UPDATE 1432z: G3XIZ spotted! Not strongly, showing how poor my system is on 136kHz.

UPDATE 1445z: Now G4GIR spotted too.

UPDATE 1600z: Soon be time to charge the shack PC. I'll leave things running, but my noise floor is likely to rise. Back on battery power later.

UPDATE 1815z: G8HUH (250km) is now my best DX on 136kHz WSPR. Spotted at 1742z.

136kHz WSPR RX last night

As an experiment, I tried 136kHz WSPR RX last night with my useless antenna and deaf (at LF) FT817. Well, it was a dismal failure with not a single spot!

I was not really expecting to spot anyone, but hoping nonetheless. There were very few this side of the Atlantic on TX and it was extremely unlikely I would copy any USA stations.

So, I tried and failed.

136kHz WSPR RX

Even though my FT817 is deaf on this band and my antenna far from ideal, I was considering taking a peek at this band. Sadly, it looks like there are very few active TX stations in Europe. I know WSPRnet does not show unreported stations, but I think my chances of spotting anyone are slim. We'll see.

If I do go on, it will be the first time at this QTH and my first 136kHz outing for almost 5 years.

UPDATE 1718z: Well I am monitoring 136kHz WSPR RX. If I spot anyone it will be a miracle!

UPDATE 1852z: Nothing spotted.

136kHz noise

As an experiment I used my earth-electrode "antenna" on 136kHz RX last night. My attempts were hindered by very few active stations within range until 2E0ILY (209km) came on. There was a strong station on OPERA early, but I was unable to ID this station as I caught it way through the transmission. I suspect this was G3XDY.

One interesting thing was the noise floor and S/N of 2E0ILY through until now. If anything he was stronger on the earth-electrode "antenna". Noise seemed to peak around breakfast time, perhaps as locals turned on their appliances before setting off to work?

Nothing was IDed on OPERA on 136kHz last night.

I suppose tonight I shall try 472kHz WSPR with the earth-electrode "antenna" in the ground.

136kHz WSPR RX overnight

Last night, just 2E0ILY (209km) spotted on 136kHz WSPR. His signal is pretty consistent at -17 to -21dB S/N using my poor antenna and deaf receiver.

136kHz WSPR RX

As it is now dark, I have decided to QSY to 136kHz (USB dial) WSPR RX. As you know, my antenna is poor and my RX deaf on 136kHz and I am unable to TX on that band currently.

UPDATE 2140z: There is only a single station shown active in Europe on 136kHz WSPR TX this evening, so my chances of spotting anyone are low. At the moment no spots. I shall be on RX overnight. You never know!

Overnight on 136kHz WSPR RX

Despite my very poor system on 136kHz WSPR (poor antenna and deaf receiver) I managed to copy a couple of UK stations. To be honest it was amazing that anyone was copied.

136kHz WSPR RX

For the last few minutes I am looking on 136kHz WSPR with my very poor antenna and deaf RX. So far 2E0ILY (209km) spotted.

UPDATED 1955z: 2E0ILY (209km) has now been spotted 4 times this evening, but no-one else.

2200m and 630m in the USA a step closer?

Southgate News reports that the FCC is, at last, supporting USA amateurs being given access to the 2200m and 630m bands. I sometimes complain that OFCOM here in the UK needs a kick up the backside, but the FCC seem an order of magnitude worse. I do hope that the USA gets these bands. I've had an article of mine on 472kHz approved by the ARRL now for nearly 2 years, awaiting the release of the 472kHz band over there! I am amazed just how slow the FCC seems to be. In many ways the USA takes a far more "grown up" attitude to the use of the radio spectrum, but the unbelievable slowness over the release of these 2 bands just beggars belief.

See http://www.southgatearc.org/news/2015/april/fcc_proposes_to_permit_amateur_access_to_2200_and_630_meters.htm#.VUKSWpNQqPc

WSPRing on other bands

Today I ventured onto 60m, 40m and 20m WSPR for a change. A few spots out to 448km on 5MHz and plenty of EU spots on both 40m and 20m.

I returned to 10m to see what was doing.  At this time of day 10m is THE place to find stateside DX in abundance. Conditions like this unfortunately cannot last.

I have now decided to take a look on 136kHz with the earth-electrode antenna and the VERY deaf  FT817ND.  I might JUST be able to copy DK7FC and possibly G8HUH but I do need to make a preamp.

UPDATE 2025z: absolutely nothing copied on 136kHz WSPR. I need a preamp!