> On 13 Jan 2020, at 02:05, Mike Waters <[email protected]> wrote: > > Exactly how much is "a *lot* of loss", Jeremy? Too many knowledgeable > Topbanders have used it over the years --with great success-- for it to > have enough loss to matter.
There’s a good thread on this here: https://topband.contesting.narkive.com/GKD4HWdS/topband-wd-1a-2-way-beverage We have some remote beverages fed via about 700m/2400ft of low loss coax - around 6dB loss on 1.8MHz We have a bi-directional E/W beverage of about 600ft. I’ve not measured the transmission line loss in the WD-1A in the reverse direction but forward/reverse comparison indicates about 10dB loss on 1.8MHz. The total loss to the shack in the reverse direction is around 16dB and weaker USA signals are lost in noise. Worse still of course on 80m. I now use that E-W Beverage as an unterminated bi-directional. From the link above, N1BUG and KV4FZ have good results with WD1-A . In our environment the attenuation of WD-1A as transmission line doesn’t play well. I’m hoping to use a length of coax as the E-W Beverage but haven’t had the time to do it! 73, Jeremy Maris G3XDK/G4AQG _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
