10m USA WSPR spots

The first USA station to spot my 10m 500mW WSPR beacon today was KC1AWS (5308km) at 1404z. At least the band was open to the USA.

Recent 10m WSPR spots of my 500mW beacon

In a few years the best chance of copying the USA, or the USA copying me on 10m, will be on the rarer summer days with transatlantic Es.  F2 across the Atlantic will become very rare sadly, although WSPR should help to "winkle" out such openings as long as up to 2 minutes in length. The danger is people will desert the band as conditions dive. We've already seen this happen on 6m, which is a pity.

UPDATE 2024z:  The last spot of my 500mW 10m WSPR beacon was K9AN (6505km) at 1746z.  Now going QRT on 10m. Went QRT on 10m at 2034z. Still active TX and RX on 630m (472kHz) WSPR.

ET/G8DYK on 10m WSPR

I have just seen that ET/G8DYK (5931km) was spotting my 500mW 10m WSPR beacon this morning a few times. This my best DX so far today on the 10m band.

Low cost kits

See http://www.aliexpress.com/store/331885 .   This website has some very low cost rigs for sale. An example is a 40m Pixie at around $10 post free. You'd be hard pressed to buy the individual parts for less!

UPDATE 1430z:   I have just ordered a 40m Pixie kit from them.  Should be here in 2 to 3 weeks time. I hope I can manage to build it with my clumsy soldering currently.

UPDATE 2000z: G1KQH has found the same Pixie at an even better price:

Greetings Roger

 

I could of saved you a fiver out of your pension but you had to rush in:

http://www.ebay.co.uk/itm/DIY-KITS-PIXIE-HAM-RADIO-HF-40M-CW-QRP-TRANSCEIVER-7-023-7-026MHz-/121521131018?pt=LH_DefaultDomain_0&hash=item1c4b394e0a

 

73 Steve
http://www.g1kqh.talktalk.net/

Sunspots and 10m

Sunspot number today has climbed to 181.  10m is forecast to be "good".

UPDATE 1125z:  So far this morning my 10m 500mW WSPR beacon has been copied by UR/SWL56 (2283km), 4X1RF (3519km) and local G4IKZ (18km). The usual reporters! I expect the 10m band will open to the USA after lunch.

UPDATE 1447z:   The 10m band opened to the USA for me here after 1404z.

472kHz WSPR

I have been using 5mW ERP and the earth-electrode "antenna" all day.  Best spots of me today have been from stations that have copied me before such as G3WCB (101km) and G8HUH (250km). It will soon be time to change antennas.

10m USA WSPR spots today

KE6BID (5295km) was the first USA station to spot my 500mW WSPR beacon today at 1300z. As I write this at 1624z, there are plenty of USA stations spotting me still. UPDATE 1920z:   It looks like W9ZOC (6259km) was the last USA station to spot my 10m 500mW WSPR beacon at 1818z. It is over an hour since the last USA 10m spot so it is unlikely that there will be others now.

Fredbox derivatives

Since my original Fredbox 2m AM design, a number of derivatives have been designed and built around the world. This is what our hobby is all about. Although the original Fredbox worked well and its results surprised me, it was always ripe for further developments, which is healthy. My Sixbox was a 6m version and at some point, when fitter, I'd like to make a simple 10m AM version for local natters.

See https://sites.google.com/site/g3xbmqrp3/vuhf/fredbox for the original Fredbox. Click on the schematic to enlarge. Other derivative ideas are on my website www.g3xbm.co.uk.   By the way, it got its name from Fred G8BWI who was a disabled local in the Cambridge area back in the 1970s. Fred was a regular contact and he could talk for hours and hours and hours and hours zzzzzzzzzzz. RIP Fred.

Stroke update

Last year I was expecting to be fully back to my old self well before now. As it is, I am still some way from that position.

Overall, I think I am still improving, but the big leaps I was expecting don't seem to be happening. Perhaps I should be satisfied with slow, small, moderate steps?  

I still feel as if I am living in a bit of a dream world, I still feel drunk when walking (feel giddy), still tire easily, and drinking thin liquids is still not easy.

Overall, I am getting slowly better, but perhaps I should expect to be left with a level of disability and will be pleasantly surprised when I get fully fit again. Perhaps my expectations were unrealistic? Whatever, I am not giving up: I want my "old self" back again this year.

At the moment I still feel unable to do field work, climb ladders (for antenna work)  or use a soldering iron. With time, this will improve.

Sunspots up again

Sunspot number today has risen yet again. It is 140 today. 10m is expected to be "good".

4X1RF (3519km) was copying my 10m 500mW WSPR beacon at 0924z. I remain hopeful of greater DX this morning. 10m should certainly open to North America after lunch. This happens on most days.

433MHz AM modules - G6ALB progress

G6ALB has reported some progress in his tests using 433MHz AM modules, although it looks like an external linear audio transistor stage may be necessary to get best AM (voice) sensitivity from the super-regen detector. On TX he is getting 10dBm from the TX module at 5V (more with higher supply voltages) although the mod seems to be a mix of AM and FM. Our first "DX" test will probably be from G6ALB to me using the voice modulated TX module. I'll receive Andrew on my FT817ND initially. When the super-regen RX is sensitive with speech I'll try to receive him with that. Super-regens should be sensitive on AM, but are usually poor NBFM detectors.  We are about 3km apart and both have V2000 verticals externally mounted. At 70cms these have gain.

Andrew has ordered 5  pairs of 433MHz AM modules (TX as well as RX) for not much more than £2 total from China. This makes each TX/RX pair very inexpensive. It amazes me that they can make these so inexpensively. I hope G6ALB succeeds in this venture. It would be good to be able to communicate with him using a really low cost 70cm transceiver. I expect Andrew will write up his results in an article for a UK magazine later.

It seems entirely possible that a complete 70cm AM transceiver can be made for just a few pounds based on these low cost 433MHz AM modules.