Thursday, May 19, 2016
Thanks to all for some great ideas and help. Time has precluded me
from tearing the original amp / slitter apart, but fitting anew
Labgear brand one immediately cured the problem, and i have to say
that I suspect my LF activity killed it, either down the mains or down
the feeder. I like the idea of a dish and a satellite feed, as does
`er indoors as she seems desperate to set up yet another direct debit,
this time in favour of Sky TV :(
The inductor across the input sounds a good idea, and I may use it. I
will perhaps have a play with my (expensively) fixed SA and tracking
gen to see how one works on the bench, and learn something, hopefully.
Next time I am LF'ing I will add a transformer before the loading
coil, even though I get a very good match without one, in the hope it
will keep RF off the feedline and out of the shack. For now I am
getting no grief off the wife, at least not about the TV going on the
blink, so my thanks again to you all.
Chris 2E0ILY mailto:[email protected]
My part time LF grabber is at http://www.chriswilson.tv/grabber.html
> Hello Chris.
> Apart from the suggestions from others, I would suggest a small 1.5 -
> 2 turn link right across the input of the amplifier. You could wind it
> on say a 2mm twist drill for size. Such a coil would present a
> reasonable impedance to the UHF TV signals but would effectively be a
> short circuit for HF and lower VHF signals, shorting them to earth at
> the amplifier input. and prevent saturation of the amplifier with your
> transmitter signals.