Thanks Mal, This was the purpose of the test and you've confirmed my own thoughts on the matter. A few dB makes a huge difference when signals are close to the noise - the difference between "workabl
Hello LF, I have just had a QSO with Gus SM6BHZ. He emailed to say he was hearing me on 501.3 and was QSX 505.105. Despite the other strong signals from the beacons he was a nice strong 599. We excha
Er....have I missed something...? I seem to remember several people responded when you asked the same question on Nov 4th. There were plenty of answers to your query about efficiency etc. with a few
Hello LF, Looking through Chris G3XIZ's "operators" list I see no mention of G3BIK. I have seen QRSS-3 from G3BIK on 502kHz on a few occasions - including this weekend sometime. I have no email addre
I didn't miss it Mal... Nowhere have I seen your reported: DC Input Volts/Current RF Output Power Efficiency Others have replied to you with their own measured efficiency vs power so perhaps you can
As a CW only op I think I can answer Mal's point without being accused of partiality. The use of CW is always going to be seen as the primary mode on MF, due to the bandwidth limitiations and the eas
Hello LF, While I was making some recordings of various signals on MF and HF to demonstrate the "sound" of my Inrad 250Hz filter for another list member's benefit I decided to see what real effect th
Dave, LF, The other option is more power of course! If your antenna is inefficient due to low radiation resistance you need more current and if it's poor because of high environmental losses you need
Hello LF, The conditions on MF are certainly improving, with lower QRN static levels. I've seen G0MRF's beacon several times recently, and have seen the PSK31 on the waterfall more than once. I will
Hello LF, I'm hearing a very weak signal from G3XIZ calling CQ on 502.35kHz at 0857UTC. RST perhaps 229, needing external tuneable pre-amp and 10Hz AF filter to pull out the callsign. Pretty good for
Hello Gary, LF, Yes I'd found that on QRZ.COM (always my first port of call!) but no other details anywhere else. I recognized the G3BIK call from my formative years - I'm originally from the North E
Again...with my TX At 50W output :- Dc supply = 18.7v at 3.4A Efficiency = 78% The math's is trivial..... 18.7V x 3.4A = 63.58W DC input 50W RF output (as measured on a homebrew power meter calibrate
pome (pm) n. A fleshy fruit, such as an apple, pear, or quince, having several seed chambers and an outer fleshy part largely derived from the hypanthium. Fruity! John
It's back again! I saw it on halloween... have you looked the Feld Hell sent between the "PAT"? John -- John GM4SLV IP90gg Clousta, Shetland Attachment: PAT_hell.jpg Description: JPEG image
Hello Mal and LF group, I was going to post something about the conditions on Tuesday evening (13th into 14th Nov) so Mal's post is an appropriate place to do it. I understand that some excellent T/A
Hello LF, I've just started a CW beacon on 501.5 at 5W TX power (approx 20mW ERP) for an hour or so. The QRN isn't quite so fierce, between the really heavy hail showers, so it would be interesting i
