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Maxpro 3000+ SWR

 
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Maxpro 3000+ SWR
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coast fm
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Joined: 11 Mar 2011
Posts: 9

Post Maxpro 3000+ SWR Reply with quote
Hi, I have a maxpro 3000+ (very pleased with it!) connected to a broadcast concepts 600w amp and broadcast concepts low pass filter. I have the SWR/Power set to external and in the display settings I have it set to External Hi Sens. The power meter works fine but the reflected reads very low.

For example, with 20w reflected power showing on the Bird meter I only get a reading of 0.3 with the swr control P4 set to max

Is it possible to increase the sensitivity of the SWR input?
Sat Dec 08, 2012 12:08 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
It is possible by changing firmware, but you can't do that yourself.

What you can do yourself is use a small DC amp with an operational amplifier, such as this:
http://www.radio-electronics.com/info/circuits/opamp_non_inverting/op_amp_non-inverting.php

Make sure your opamp allows rail-to rail inputs, such as ti2371.

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