A very busy weekend for me and very little time for radio. But . . . Spent some time on Friday evening trying to persuade my VFO to cover 73kHz. Having improved its stability on 136kHz by reducing th
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
Hope this gets through - my last message to the group failed. On the subject of PSK31 and the need for linear amps, will a simple audio amp do the job? The BK Electronics amps should be linear over i
UK amateurs may like to know that the April edition of Ham Radio Today magazine has a feature on the HAARP project. It is on sale on Wednesday 10 March. End of commercial. Wearing my day-job 'hat'..
First of all please let me introduce myself. My name is Des (M0AYF) and am currently a qrp H.F. operator (just a hint of qro :-) with an interest in L.F. I have only been on the mailing list for a fe
Sorry, I missed another 'first Tuesday' on 73kHz. This time my excuse is high winds which caused me to lower the antenna, and torrential rain which stopped me raising and re-tuning it. On the positiv
Yet another interesting weekend: Saturday 6 March Heard G4GVC (599), G3XTZ (5 9+10 9), G3YMC (529), G6RO (539), GW4ALG (559), PA0LQ (549). Saw on Spectrogram HB9ASB ('O') and DJ8WL ('O'). Had the new
Very little activity as I spent several pleasant days in Pembrokeshire (without a radio!) and travelled back on Sunday. On Sunday evening I heard, G3KEV (599) and PA0LQ (549). Saw HB9ASB ('0') on scr
Firstly, congratulations to Peter, G3LDO, on greatly increasing the 73kHz one-way distance record with his transmission to Toni, HB9ASB. I have not yet calculated the distance but it must be 700km+ c
In my last message (Records) I congratulated G3LDO on his 73kHz record. I should also, of course, have congratulated Toni, HB9ASB, on his achievement in receiving Peter's signal, especially as Toni i
Tuesday 16 March Heard MM0ALM (439) for thje first time. No reply to my numerous calls. Also G8RW (439) and G4GVC (589) Wednesday 17 March Heard another new one: G3RXH (439). Also heard MM0ALM again
Tuesday 16 March Heard MM0ALM (439) for thje first time. No reply to my numerous calls. Also G8RW (439) and G4GVC (589) Wednesday 17 March Heard another new one: G3RXH (439). Also heard MM0ALM again
I heard this =very weak= on Sunday night. Not listened since. Yes, I have noticed it, too. I spent some time checking my antenna and matching arrangements as I thought I had a problem. But Tx curren
The RTTY signal which has reappeared on or around 137kHz is the self same signal we were discussing in January and at various other times. It appears for a few days at a time and then disappears for
A quiet weekend for activity but some interesting signs that conditions were special: Friday 27 March Heard G6NB (579). Worked GW4ALG who was best signal yet at 58/99; gave me 569. Very good DX condi
As usual, I will be operating from Pembrokeshire in south-west Wales from time to time over the Easter week. There is no formal schedule of operation but I will make every effort to be active on the
Today I've made some comparisons of different Audio-filter settings and CW against Slow CW. All test were made blind and under real band-noise conditions with the main receiving antenna (low noise,
Spent an enjoyable and relaxing week at the /P QTH in SW Wales. Went out three times with the lF gear - note that because of some very close power lines I cannot operate from indoors. Easter Day 4 Ap
HB9ASB wrote: Alarming is the increasing number of stations with good signals and mediocre receivers. It seems to me, that the real challenge on the LF band is the receiving part and I think there is
