[Elecraft] T/R switching problem

Fred Jensen k6dgw at foothill.net
Wed Mar 26 19:35:23 EDT 2014


I have this problem occasionally on my sloping Vee for 40, 80, and 160, 
and I know it is in the antenna.  The V is fed at the top of the tower 
with 450 ohm ladder line which connects to the antenna wires with copper 
split nuts.  Corrosion has slowly occurred, and over time, the band gets 
very quiet.  A single dit will fix it, and of course, if I continue to 
transmit such as in a contest, all is well.  Getting it down to fix it 
is a serious PITA because of all the trees under it, and I don't know 
how much longer we're going to be here, so I live with it.  YMMV.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 3/25/2014 8:09 PM, Don Wilhelm wrote:
> Jan,
>
> Before deciding it is a K3 problem, take a look at your antenna system
> coax.  If you bought cables from DX Engineering in the past year, be
> aware that they had a crimping problem that could result in the bhavior
> that you are experiencing.  A transmit 'sets it straight', but the RX
> diminishes after that.




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