Topband: safely sharing an RX antenna

[Ed Sawyer]

I have a pair of 900 ft parallel beverages to the NE.  The feed point of the
beverages is approximately 350 ft from the closest of the 2 T verticals.
The T verticals pattern is directly towards the beverage array since both
point NE.  Obviously the beverages go away from the array to the NE.

 

I can transmit with 1.5kW and be listening 15khz away with the preamp off on
the beverage antenna and hear very well but with some interference (maybe s5
- 6).  At 25 - 30khz away I can hear the noise floor while transmitting.
You hear the thumping of the noise but its not increasing the meter.  This
is with a 250khz wide filter.

 

The 2 radios are FT1000MPs sharing the same beverage with a 3db splitter.

 

On SSB, the interference is worse and I have to add about 10dB of pad to the
above.

 

Ed  N1UR