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? CPI Range Boost Feed-Thru Power Rating?

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Old 02-27-2012, 09:18 AM
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Default ? CPI Range Boost Feed-Thru Power Rating?


CPI, Communication Power Inc back in the day made at least 3 different & similar outboard receive Pre Amps called the Range Boost. I've had several over the years and am using another one now.

I've run 100 watts through them for long periods with no trouble. Ya never seem to get the factory spec sheet with these things when you buy them used.

Does anyone know what the factory power feed-thru rating is on these things?

Note for fun: If anyone needs or wants a good outboard pre-amp, you can hardly beat these Range Boost models from CPI. Ultra low noise amps. They are both gain amps and attenuators (variable knob) and they significantly increase received signals with little to no discernible increase in noise. High reliability, I've never heard anyone complain about them or see one break down or go bad.


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Old 02-27-2012, 10:02 AM
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I agree, good CB pre-amp.I have the CPI Range Boost Plus with the cool On The Air light.

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Old 03-04-2012, 11:11 AM
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The circuitry is the same as used in their BC-2000 Base Console, albeit without the gain control. CPI's documentation states that the -2000 may be used at power levels up to 400W PEP...but after looking at the relays used in both the Base Console and the Range Plus, 100w is a far more realistic figure. They're the same type and contact current rating used in the Kenwood TS-5xx/8xx, Drake TR5/TR7 and a number of others of the period.

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