Re: [VHFcontesting] need Mits M57762 1296 amp module -replacement

[<k3sk@buckwalter.co>]

Interesting idea Bill.   But like you said, its not a drop-in replacement.
As my TS-790A uses the M57762, I did a quick search on the feasibility of
the change if I ever face the situation of needing one,    I found this
(link) that provides some detailed insight to making the change.  
 
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=
8&ved=2ahUKEwjmq5iEyIL1AhX1qXIEHbnxB9AQFnoECAUQAQ&url=http%3A%2F%2F01895fa.n
etsolhost.com%2FPDF%2FMOSFET%2520PA_pdf.PDF&usg=AOvVaw2vHeTfTbNNlJbFNltf7Gyx
 
de K3SK
Dave
 
From: Bill Olson <callbill@hotmail.com> 
Sent: Sunday, December 26, 2021 12:45 PM
To: k3sk@buckwalter.co; mikflathead@aol.com; vhfcontesting@contesting.com
Subject: Re: [VHFcontesting] need Mits M57762 1296 amp module
 
Mike, Instead of continuing to search for the old bipolar module I think I'd
try to "modernize" and rework your amp to use one of the modern MOSFET
modules like the Motorola RA18H1213G. (The M57762 is probably 30+ year old
technology.) RF Parts has the RA's for $71 and you can probably find them
cheaper.. still from the US instead of Italy or who knows where.. It's not a
"drop in" but easily retrofitted and requires a bit less drive for a bit
more power.. 
 
my $.02  
 
bill, k1DY
 
  _____  

From: VHFcontesting
<vhfcontesting-bounces+callbill=hotmail.com@contesting.com
<mailto:vhfcontesting-bounces+callbill=hotmail.com@contesting.com> > on
behalf of k3sk@buckwalter.co <mailto:k3sk@buckwalter.co>
<k3sk@buckwalter.co <mailto:k3sk@buckwalter.co> >
Sent: Sunday, December 26, 2021 1:23 AM
To: mikflathead@aol.com <mailto:mikflathead@aol.com>  <mikflathead@aol.com
<mailto:mikflathead@aol.com> >; vhfcontesting@contesting.com
<mailto:vhfcontesting@contesting.com>  <vhfcontesting@contesting.com
<mailto:vhfcontesting@contesting.com> >
Subject: Re: [VHFcontesting] need Mits M57762 1296 amp module 
 
These guys have 97 in stock ---
https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rf-micr
owave.com%2Fen%2Fmitsubishi%2Fm57762%2Fuhf-power-amplifier-module%2Fm57762%2
F
<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.rf-mic
rowave.com%2Fen%2Fmitsubishi%2Fm57762%2Fuhf-power-amplifier-module%2Fm57762%
2F&amp;data=04%7C01%7C%7Cb984b3b99d4946350ebb08d9c80e7488%7C84df9e7fe9f640af
b435aaaaaaaaaaaa%7C1%7C0%7C637760786675904929%7CUnknown%7CTWFpbGZsb3d8eyJWIj
oiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdat
a=qRlejtAgywcuUqz%2FGs1ExUe%2BBsyC9iinkTcEJbFwr6o%3D&amp;reserved=0>
&amp;data=04%7C01%7C%7Cb984b3b99d4946350ebb08d9c80e7488%7C84df9e7fe9f640afb4
35aaaaaaaaaaaa%7C1%7C0%7C637760786675904929%7CUnknown%7CTWFpbGZsb3d8eyJWIjoi
MC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=
qRlejtAgywcuUqz%2FGs1ExUe%2BBsyC9iinkTcEJbFwr6o%3D&amp;reserved=0



de K3SK

-----Original Message-----
From: mikflathead@aol.com <mailto:mikflathead@aol.com>  <mikflathead@aol.com
<mailto:mikflathead@aol.com> > 
Sent: Saturday, December 25, 2021 10:51 AM
To: vhfcontesting@contesting.com <mailto:vhfcontesting@contesting.com> 
Subject: [VHFcontesting] need Mits M57762 1296 amp module

I have tried unsuccessfully to purchase one off Ebay. All I got were 2 bad
ones. Can someone recommend a supplier of these. RF parts is out. Happy
Holidays. Mike

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