The decision to try it or not would be (for *me*) a question of "is a linear amplifier required or not". I definitly will not build a linear PA on LF. I see that other hams have the same thoughts. Wo
Dear All, Some of you may have heard me making funny noises on 136. This has been a test of my PSK31 equipment. I can now produce about 200W or so of the stuff which is about 6dB down on my normal le
Some of you may have heard me making funny noises on 136. This has been a test of my PSK31 equipment. I can now produce about 200W or so of the stuff which is about 6dB down on my normal level but pr
Dave, I've been PSK31'ing on HF for the last couple of days so will listen for you. My 136KHz linear won't be ready for another couple of weeks though. Let me know when you plan to be on next. Martin
Andy et al Is that 6dB down on mean power ? As PSK31 has a peak to mean ratio of exactly 3dB I suspect the extra power reduction is to get the transmitter into a suitable linear region. It's a differ
At 18:17 24/02/99 -0000, you wrote: I will put out some calls down the bottom of the band, about 136.2, at around 8pm for the rest of the week. I will listen co-channel. Any reports gratefully receiv
produces 250W key-down (PEP) and obviously shows less average when sending PSK31 due to the holes in it! Do you intend to use BPSK or QPSK? Any other parameters I should set? I have copied several st
Rik and all, QRM is increasing significant below 136.5 here in Belgium and I believe it is even worse in Germany. Any chance to use 137.65 as PSK activity centre as Andy suggested some days ago? This
QRM is increasing significant below 136.5 here in Belgium and I believe it is even worse in Germany. Any chance to use 137.65 as PSK activity centre as Andy suggested some days ago? This would incre
Rik and group What about a test on 137.65kHz at 2100 UT to 2115 or 2130 UT. Would be interesting if you could gradually decrease TX power during that period (let's say 3dB down every 5 minutes) ? I w
What about a test on 137.65kHz at 2100 UT to 2115 or 2130 UT. Would be interesting if you could gradually decrease TX power during that period (let's say 3dB down every 5 minutes) ? I will report on
Rik and everyone, At 21 UT I was QRV on 137.650kHz but also heard (saw) nothing. At 21.10 I left the shack and when I returned at 21.30 I had some PSK signals from Dave on the screen. Most was 'rubis
Excellent information John. I have just that configuration but have yet to try an installation with a newer 16 bit card. Did you find any "quirks" to avoid? Cliff K7RR Just a note that psk31 also wor
Dear all. Apologies to all those who wondered what the warbly carrier around 136.2kHz was these past few evenings (especially to those I accidentally QRM'd by coming up on 136.5 tonight, oops..). It
Reports tonight on psk31 M0BMU - very strong and solid copy gave Wolf 549 at 2010 utc approx DF0WD - audible and solid copy gave Jim 569 G4JNT - barely audible and I just got the odd word, Jim gave h
