[TowerTalk] Fwd: Fwd: Multi-Band Vertical Question

[hanslg at aol.com]

 First problem; your beautiful, very well generated, filtered and harmonic free output with harmonics maybe, well below any possible regulation (say -180dB even if this is unrealistic) could easily be up to -15 - 20 dB and generate signals in receivers that don't want to hear you. No, you will not hear that. 

Second problem; signals from surrounding transmitters could, by cross-modulation, generate signals in places there you want to listen to those rare DX that you have been hunting for years. Yes, you will hear that but doesn't necessary associate those signals with cross-modulation as there is so much QRM anyhow (or maybe that's the cross-modulation).

I remember the first time I had the pleasure listening to a REAL good radio (a Collin S something) and was amazed how clearly I could hear BC stations without that hissing and whistling I heard in my Telefunken radio at home. Good antenna? No, it was the cross-modulation in this case in the radio that did the difference.

Hans - N2JFS

 


 

 

-----Original Message-----
From: Pete Smith <n4zr at contesting.com>
To: Jim Brown <jim at audiosystemsgroup.com>
Cc: Tower Talk List <towertalk at contesting.com>
Sent: Thu, Aug 12, 2010 3:13 pm
Subject: Re: [TowerTalk] Fwd:  Multi-Band Vertical Question


Even if I was running 2 radios?



73, Pete N4ZR



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On 8/12/2010 3:00 PM, Jim Brown wrote:

> On Thu, 12 Aug 2010 05:52:45 -0400, Pete Smith wrote:

>

>    

>> Granted I was only running 100

>> watts (second radio in SO2R), but I heard no evidence of

>> cross-modulation.

>>      

> It's your (ham) neighbors who would hear it. :)

>

> 73, Jim K9YC

>

>

>

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