[Collins] Power Inverter Question

[Robert & Linda McGraw K4TAX]

First, I wouldn't be any in the least concerned with HF interference from a 
cell site.  That is unless you operate in the 800 to 900 MHz band or above. 
Secondly, these are quite low power transmitters compared to ham HF rigs. 
Now that brings up another question, should US Cellular be concerned about 
radiation from a nearby ham station?  To some degree, yes, specially if you 
operate UHF as the 2nd harmonic falls in the nearby cell range.  At the same 
time, these folks are accustomed to dealing with RFI issues.  Make friends 
with the technical fellows when they install the equipment.  They are 
usually great to work with.  In most cases the cell equipment is assembled, 
pre-packaged and tested in a cell site building and the entire system, 
building and all, is moved on to the property and connected to the multiple 
antennas.

73
Bob, K4TAX


----- Original Message ----- 
From: "Danny Lunstrum" <dlvnstru at netins.net>
To: <collins at mailman.qth.net>
Sent: Wednesday, July 26, 2006 12:01 PM
Subject: [Collins] Power Inverter Question


Good Afternoon Group,

US Cellular is planning on installing a cellphone site approximately 1300' 
from my amateur radio/short wave listening station and I am very concerned 
about possible interference.

In visiting with Mike Gruber at ARRL, he suggested that I take a portable 
communications receiver and monitor the amateur and short-wave bands with 
the rig around     1300' from a cellphone site and see what kind of 
interference I can pick up.

My question concerns using a 51S-1 receiver and powering it from a power 
inverter with a 12v input.

The two that I looked at stated that the output was a "modified sine wave 
output."

Would it possible to damage the power supply section of the 51S-1 if I used 
a 12 VDC to 115 VAC power inverter to power it?

Thank-you for your thoughts,


Dan Lunstrum
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