[ICOM] Icom 706 PA's

[Mike Olbrisch]

I have a 706 MK-I myself.  First site I checked was $96 each.  There were other
sites - but life is too short to worry about it.....

Mike - KD9KC.
El Paso, Tx.
DM61rt

Molon labe. [mo-lone lah-veh] Google it...

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> -----Original Message-----
> From: icom-bounces at mailman.qth.net 
> [mailto:icom-bounces at mailman.qth.net] On Behalf Of Al Waschka
> Sent: Sunday, September 13, 2009 9:21 AM
> To: ICOM Reflector
> Subject: [ICOM] Icom 706 PA's
> 
> 
> I made an interesting discovery last week.  I have read on 
> multiple sites about the Icom 706 PA transistors being no 
> longer available.  The part number often referenced is 
> SRFJ7044.  I vaguely remembered that it looked like the 
> transistors in my original 706 (purchased used at a hamfest) 
> had been replaced.  Today when I installed a CW filter I 
> decided to check and see what they had been replaced with.  
> My final transistors are MRF255's.  So I thought some smart 
> tech had found a replacement for the 7044s.  Guess what? My 
> IC706 service manual shows MRF255's as the HF PA transistors 
> and a different transistor, MRF5015, as the VHF PA, which is 
> contrary to all the data I have read about three 7044's being 
> used 2 in HF and 1 in VHF.   It appears that the MRF255's are 
> available, although they probably are not cheap.  The one 
> source that I contacted wanted $128 each for two.  Might be a 
> good thing to look for at hamfests and surplus dealers.  It
>  appears that the posts regarding SRFJ7044's are talking 
> about MkII's and early MkIIG's.
>  
> 73,
>  
> Al K5TAN 
> ----
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