[MRCA] Prc-25 battery question

[B. Smith]

Here is some info on building a battery box using standard battery 
holders but requires some mods on the box it self.
Z

http://k4che.com/PRC-77%20Battery/PRC-77%20Battery.htm

On 4/22/2026 6:53 PM, Gene Smar via MRCA wrote:
> Dave:
>
> I built my own battery out of 10 C cells in series. I tapped the 
> bottom 2 to get the 3 Volts for the 2DF4 final tube's filament. But 
> don't forget the nichrome wire in series with this tap. It drops the 
> battery's 3V down to 2V, plus it prevents a current surge, when you 
> hit the PTT switch, from popping the filament in cold conditions.
>
> 73 de
> Gene Smar AD3F
>
> Sent from my Radio Shack TRS-80 model 100 laptop
>
>     On Wed, Apr 22, 2026 at 6:38 PM, KD2GIY via MRCA
>     <mrca at mailman.qth.net> wrote:
>     On my trip to MD and DE I came across a very good deal on a
>     working prc-25 on the Jeep dock.
>
>     I understand the radio needs 2 different voltages and it would be
>     a pain in the ass to fabricate this.
>
>     My question is, does anyone have for sale a drop in battery insert
>     for this radio or can let me know where I can find one on the
>     internet?
>     I've seen pictures of some that take d batteries.
>
>     I have looked and cannot find anything but used original dead
>     batteries.
>
>     Thank you for your time.
>
>     Best regards
>     Dave
>     KD2GIY
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