[Elecraft] K2: Broadcast Station Breakthrough on the 80 Metre Band

[KBG Luxford]

Hi Gang,

Here's a funny thing.  I have just replaced my two parallel connected 
dipoles (one cut for 80, the other cut for 40, connected together at the 
apex and fed by a 1:1 balun and RG58CU coax) with a double zepp with 
just one set of radiating elements cut a little longer than required to 
resonate on 3.6 MHz, and fed with 450 ohm balanced line connected to a 
4:1 balun just outside the shack and a short length of RG58CU to the K2 
with KAT100.

The apex of the new antenna is some 12 feet or so higher than the old as 
I now leave my wind-up tower fully extended.  (Extended height is about 
45 feet). Seems to work well, except that I noted considerable broadcast 
station breakthrough on the 80 metre band that was not experienced with 
the old dipoles.  However, when the Tune button is held and the KAT100 
does its magic, the breakthrough disappears.

Curious.

73
Kevin
VK3DAP / ZL2DAP