Topband: Using 80m 1/4 vertical on 160

[Roger Allan]

I used Deltrol relays from Surplus Sales of Nebraska to switch my matching, 
$24 and rated at 6kV from memory.

Working fine at 400W even on my very short radiator.

-----Original Message----- 
From: Tom W8JI
Sent: Tuesday, June 03, 2014 2:14 PM
To: W0MU Mike Fatchett ; topband at contesting.com
Subject: Re: Topband: Using 80m 1/4 vertical on 160

> I am putting up a single DXE 80m 1/4 vertical.  I can put out the proper 
> radials.  I will have to add some longer ones for 160.
>

That's a good vertical, and the 80M radials will probaby be adequate if you
have enough of them.

> Now to figure out switching in and out 160 and the matching.
>


That is always the difficult part. If you have a good ground system and high
efficiency, voltage can get pretty high when on the higher band for a top
wire, and the lower band for switching a coil. Many systems work at high
power because of losses.

If you just want to run outside to change bands, it is easy.

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