MIDLAND 747B-BOSTER?
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WARLOCK
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MIDLAND 747B-BOSTER?
Can anyone please give me any infomation on a midland 747b burner,what the output is on fm/sideband.
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suealw
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Re: MIDLAND 747B-BOSTER?
just googled it and a couple of sites are stating it does 100 watts am/fm and 200 watts ssb.
hope this helps.
hope this helps.
2W0RBW
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wa10
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Re: MIDLAND 747B-BOSTER?
warlock i have not seen one for years but the ones i have seen were the same as the cte 747, use 4x ms1307 mosfets making around 100w max fm or ssb with 10w input, they are not biased for ssb use and sound crap on ssb like any class c amplifier, a much better choice would be the rm-kl203 which are biased for ssb make a little more power and sound ok.
W8JI
"An antenna with a poor ground using few radials cannot have a support mast grounded to the radial common point (at least it shouldn't if designed properly) There is no exception to this!
"An antenna with a poor ground using few radials cannot have a support mast grounded to the radial common point (at least it shouldn't if designed properly) There is no exception to this!
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UGLY_BOB
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Re: MIDLAND 747B-BOSTER?
I totally agree with that. Mine's been excellent, and it doesn't get overly hot either. I think it's the mosfet tranny that makes it perform so well.wa10 wrote:a much better choice would be the rm-kl203 which are biased for ssb make a little more power and sound ok.
EXTREMELY WEIRD... AVOID AT ALL COSTS !
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WARLOCK
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Re: MIDLAND 747B-BOSTER?
i have been offered a k/po EA-150P any thoughts on this amp?
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UGLY_BOB
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Re: MIDLAND 747B-BOSTER?
Had one a few years back. It was good. It's sold under a few names. Mine finally blew up though... whereas the RM stuff tends not to.
EXTREMELY WEIRD... AVOID AT ALL COSTS !
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Bulldog69
- Regular
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Re: MIDLAND 747B-BOSTER?
Bit late for a reply to this thread but the 747 has the RM 203 board insidewa10 wrote: ↑02 Jul 2009, 18:24 warlock i have not seen one for years but the ones i have seen were the same as the cte 747, use 4x ms1307 mosfets making around 100w max fm or ssb with 10w input, they are not biased for ssb use and sound crap on ssb like any class c amplifier, a much better choice would be the rm-kl203 which are biased for ssb make a little more power and sound ok.
