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Author Topic: RF Concepts RFC 4-32 and Mirage B23 G  (Read 2589 times)
N9IAG
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Posts: 81




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« on: May 22, 2011, 06:48:44 PM »

Just got back from Dayton. Great hamfest Grin

I purchased a couple of amplifiers used and am having difficulty finding owners manuals, technical specifications, service manuals, schematics, min / max power in / out, drive=output, etc.

The Mirage B23G is 144-30w, so I assume that means roughly 5 in and 30 out, but what about 2 in?  is 5 the max?
The RF Concepts RFC 4-32 lists 440 Mhz 3 in-20 out, so that's pretty straight forward, but is 3 the max in?  what about the average HT that has a 5 watt output?  Does that really mean at 3 watts you get 20, but you can drive it with 5?  Also with 3 in, that makes me think maybe its more for ATV, but it lists 440 Mhz, not 430, is it designed for 430-440, or 440-450?

Any information you can provide is greatly appreciated.

Thank you.
73...
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KG6BRG
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Posts: 116




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« Reply #1 on: May 24, 2011, 05:56:06 AM »

from the manual.
Re:4-32
max input- 5 watts
output- 20 watts (3 watts in)
freq. range- 440-450 MHz
hope that helps.  cheers.
« Last Edit: May 24, 2011, 05:58:13 AM by SWDUNCAN » Logged
WB2WIK
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Posts: 20542




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« Reply #2 on: May 24, 2011, 03:02:28 PM »

According to the ARRL Lab test report on the Mirage amp (May 1981 issue, it's on line and you can download it from the "members only" section), that amp produced 30W output with 5W drive and 25W output with 1-1/2W drive.  So with 2W it ought to be around 25W output.

That's obviously not very linear, so the amplifier is in compression at that point for sure.  However on FM that doesn't matter.
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N9IAG
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Posts: 81




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« Reply #3 on: May 24, 2011, 06:13:57 PM »

Thanks to both.  Thats awesome.
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