As far as I recall, Inrad sells front-end xtal filters. Some 25 years ago when I lived in Belgrade, at YU1EXY we had two six-pole filters for SSB part of 40M band but I can't recall and difference wi
W6EL prop program helped me to work my first (and single, so far) Alaska on 80m some 20 years ago. 73, Mirko, S57AD 2017-02-17 18:50 GMT+01:00 Merv Schweigert via Topband < topband@contesting.com>: -
Another approach could be 5/8 WL vertical antenna for 80 (65' vertical and the rest horizontal), with 800 pF variable capacitor in series shortened by relay on 80, and relay opened on 160 so you coul
Long path or short path? :D I'm just joking. I'm afraid even if 80m signals would reach the Earth, D-layer would absorb it. Mirko S57AD -- Mirko S57AD _________________ Topband Reflector Archives - h
Common mode choke, and maybe a relay to disconnect feeder from inv L and raised radials. 73, Mirko, S57AD -- Mirko S57AD _________________ Topband Reflector Archives - http://www.contesting.com/_topb
I know Yaesu FT707, but am not aware of FT8 :D 73, Mirko, S57AD 2017-10-27 14:37 GMT+02:00 Greg Chartrand via Topband < topband@contesting.com>: -- Mirko S57AD _________________ Topband Reflector Arc
If you will use your circle array strictly for 160m band, then go for 300 foot spacing (which is optimal for top band). No personal experience here, just some common sense. 73 Mirko, S57AD 2018-03-03
Simon, how about shunt feed 25m tower (by photo it seems there is enough space for radial field under it. And, how about two or three sloping dipoles for 80 from 50m tower? Either two in 310° and 45°
And where the link is? I'm all ears :) 73, Mirko, S57AD -- Mirko S57AD _________________ Topband Reflector Archives - http://www.contesting.com/_topband
Hi Kevin, I do have a copy of "Don Wallace W6AM" book. Excellent reading indeed! 73, Mirko, S57AD -- Mirko S57AD _________________ Topband Reflector Archives - http://www.contesting.com/_topband
The same here :( I thought I dao have the April, 1984 issue of CQ Magazine in my ham library, but no. The earliest I do have is January, 1990... Maybe someone could provide PDF copy of the article he
Try with so called "hairpin match", actually several turns of wire bettween feedpoint and the ground (radials). Jou can then adjust the SWR squeezing or stretching the coil... 73, Mirko, S57AD V V to
Sad news indeed, he was my first VE I ever worked half a century ago! R.I.P. OM! Mirko, S57AD V V pet., 19. okt. 2018 ob 19:10 je oseba k1zm-- via Topband < topband@contesting.com> napisala: -- Mirko
Hello Todd, my experiences were pretty limited, but I would suggest you about 150' of wire (to 100' height, the rest horizontally), with air variable capacitor in series with the wire to cancel induc
Yes, shorting the cage to ground across a capacitor, I think. Switching between capacitor to the ground and to the transmit capacitor... 73, Mirko, S57AD V V sob., 23. mar. 2019 ob 01:58 je oseba Her