[VHFcontesting] Yaesu FT-736 1296 power amplifier

[mikflathead at aol.com]

 I was able to buy and got to checkout till I saw that the shipping was almost as much as the part. Going to wait and see my other options. I contacted Q5 to see if I can purchase a RA module from them. Hoping shipping isn't $40+. Mike
    On Friday, August 29, 2025 at 03:45:28 PM EDT, Scott Armstrong <aa5am.scott at gmail.com> wrote:   

 Not sure where I came up with the UK. RF Microwave is located in Italy and they have also suspended shipments to the US.
-Scott
On Fri, Aug 29, 2025 at 2:18 PM Scott Armstrong <aa5am.scott at gmail.com> wrote:

Looks like RF Microwave out of the UK may have them.

https://www.rf-microwave.com/en/mitsubishi/m57762/uhf-power-amplifier-module/m57762/?srsltid=AfmBOor0HoSB0uAvNv0_xs7LJxauxOpSHV8sjUVp08kMZO_Gl1E3YQDZ

....Now if you could only get a package out of the UK headed to the US.

I went on a search for these a few weeks ago when I was testing an old DEMI 1296 amp.  Thought that I smoked the modules but luckily turned out to be a bad attenuator I was using.
GL
Scott AA5AM
On Fri, Aug 29, 2025 at 2:05 PM mikflathead--- via VHFcontesting <vhfcontesting at contesting.com> wrote:

 Thanks for the heads up on the conversion. Mike
    On Friday, August 29, 2025 at 02:30:27 PM EDT, <k3sk at buckwalter.co> wrote:   

 Convert it to the RA18H1213G which is a replacement for the obsolete M57762
power module. The RA18H1213G requires significantly less drive power (200 mW
vs 1 watt) and a lower gate voltage (+5VDC at 1 mA vs +9VDC at 500 mA),
resulting in a more efficient and simpler hybrid power amplifier design that
does not require a heat sink for the control pin or bypass components for
the hybrid.  There are several sources on the web detailing how to do the
conversion. 

https://www.ahrdf.net/forum/printthread.php?tid=800


K3SK



-----Original Message-----
From: VHFcontesting
<vhfcontesting-bounces+k3sk=buckwalter.co at contesting.com> On Behalf Of
mikflathead--- via VHFcontesting
Sent: Friday, August 29, 2025 2:08 PM
To: VHF Contesting <vhfcontesting at contesting.com>
Subject: [VHFcontesting] Yaesu FT-736 1296 power amplifier

If someone has the final rf amplifier section in a module they don't need
please let me know. I have purchased what I had hoped was a good M57762
module but got a lemon. Thanks Mike
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