| A while back I mentioned when operating 75 the system worked fine until 
I passed roughly 1KW out.
This afternoon I was making up some current baluns using 5 2.4" cores 
and 5 turns of LMR-400 and LMR-400UF.
While contemplating making up center connectors for some 75 meter fan 
dipoles, It occurred to me that it might be worth a try adding one of 
those baluns just prior to the remote antenna switch, just before the 
coax reaches the tower from the sloper.
Tonight I was checking out the antenna when I realized I hadn't checked 
for RF getting into the LEDs and control lines to the 6-pack.  I moved a 
few things so I could see the 6-pack control head, hit the key to see a 
1:1 SWR at that frequency, flipped the amp switch to operate, and again 
hit the key.  1500 out and not a sign of RF feed back.
73
Roger (K8RI)
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
 |