Recently, I’ve been bitten by the 80M DXing bug. Its not so much that 80M has taken hold, as it is that I have managed 140+ confirmed on both 40M & 20M now so all the ‘easy pickings’ are gone.
My main antenna is a 102ft ladder line fed dipole aka G5RV up ~45 feet at the Apex. Whilst this antenna takes QRO in its stride, and puts out one heck of a signal, it also features a whole lot of ‘high angle’ radiation on 80M & 40M.
Whilst I’ve managed 30 countries on 80M running some power (which was needed), I always found received signals to have poor SNR. As such, I decided to once again revisit the Vertical – primarily as an RX Antenna for now – to see if it could help.
Here is the pattern difference, in theory. Note the huge amount of high angle radiation the G5RV (broadside) picks up compared to the Vertical. Although the low angle figures look close, remember the G5RV has a ‘peanut’ shape even at 45ft, so when the G5RV is facing ‘narrow side’ the Vertical has over an 8dB advantage below 15 degrees.
Continue reading for more pictures and information about the project 🙂