[ICOM] Pro II protection needed from nearby transmitter?

Ynkedragon at aol.com Ynkedragon at aol.com
Tue Mar 1 10:31:11 EST 2005


In a message dated 3/1/2005 08:38:38, Paul at PaulFerguson.us writes:

<< A ham recently moved into the house next to me. Our antennas are 
about 75-100 feet apart and we both have amps capable of 1 KW. >>

Sounds like you two are effectively running a Mult-Two station.  You will 
have to take the steps which contesters do to prevent rig damage and receiver 
de-sense.  These may include:
1.  Band pass filters
2.  Coax stubs
3.  Insuring that you don't operate on the same band at the same time, or at 
least the same band segment..
4.  Using cross polarized antennas.  (i.e. if he's using a vertical, you use 
horizontal)
5.  Grounding unused antennas
6. A high-Q antenna tuner

I'm quite sure that your PRO II would have an unhappy reaction if you tuned 
your receiver to the same frequency where your neighbor was calling CQ with a 
KW.

I have a Ham neighbor who lives about 0.4 miles away.  When he's running 
digital modes on 20 Meters (14.070~14.100) at 100 watts or less, I am aware of his 
presence anywhere I am receiving on 20.  (noise floor on band scope rises 
about 30 dB and I notice receiver de-sense.) I'm glad he doesn't live next door!

73 es GL,

Blair k3yd


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