[amsat-bb] Proximity of HF vertical to my satellite antennas

[Kevin]

Bob,
    Some external preamps like to put a couple diodes back to back on 
the input to prevent blowing out the preamp, they will rectify his 
signal and create hash, it wont hurt anything but will interfere.
You would have to look at the schematic of your rig to see if it has 
similar front end protection.
    My HF vertical  is 50 feet from my sat antennas and 120 feet from 
another set of sat antennas and I get into both and create  a wideband 
hash with 100 watts, 500 watts totally wipes out sat reception.
I have been running this way for years and have yet to damage a preamp 
or rig.
I have had no issues with rotor cables but I do have some clamp on 
ferrites on them.
YMMV
73
Kevin WA7FWF

On 10/24/2019 06:11, Bob Hammond via AMSAT-BB wrote:
> My neighbor has a HF vertical (10/15/20 meter trap) that is about 30 feet
> from my 2M/70/cm/23cm satellite antennas.
>
> He currently runs 100W and is planning on going to 200W.
>
> Should I be concerned?  Will the RF get into my feed lines and blow up my
> rig?  Or into my antenna rotor cables and fry my controller?
>
> I am still in construction mode for my satellite ground station.
>
> Bob
> W7OTJ.
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