Интересный эксперимент Луиса EA4DOM - передавал OPERA с Ultimate U3S
Так что не только Николай UA3DJG у нас QRP-ст по меркм КВ на ДВ!
9A3KB:
HI Luis,
I received your 136kHz QRP multiple times during the day in Op32Rx. Today I received you
several times at the Opera EA5HVK as opposed to yesterday. See report differences
between RN3AUS and EA5HVK programs.
73, Boki
_._,_._,_
EA5DOM:
Thank you for the reports Boki
It is just the U3 directly to the LF antenna. Radiated power must be really low but you have a very nice Tx. Congratulations
Will run the test during the weekend untill Monday morning
73 de Luis
EA5DOM
UPD - Луис для нас поведал детали своего эксперимента:
I have mesured the impedance of the antenna. The Z module is 30 ohm and I can measure 3V RMS at the U3 output
I believe this is 9/30 = 0.3W to antenna. Make your bet about how much is radiated. Considering this is a 90m vertical
and the performance is really high ..... may be around 2mW at best
A few stations decoded the transmission in Opera32 during the weekend
PA0RDT, 2E0ILY, SV8RV, SV8CS, EB8ARZ and 9A3KB
Maximun distance with EB8ARZ at 1869Km, but very close to SV8RV 1834Km and 1827Km
The best signal was reported by Boki, 9A3KB at 1364Km
Boki was also the only station reporting the WSPR-2 transmissions, which once again shows
that QRP stations transmitting only in WSPR-2 are not choosing an optimus mode for LF
May be I will keep transmiting with 300mW. It is a very convenient mode for the electricity bill
And Greta compatible, of course ;-)
73 de Luis
EA5DOM
