On Monday, January 26, 2026, 3:38 PM, JPHutch <[email protected]> wrote:

Jeep -

Is this the correct location for the modification?

Thanks

Hutch

On 1/24/2026 1:29 PM, Doran Platt via MRCA wrote:

OK...  the SPAWAR manual says 200-220 ohms, located in the audio module. It's inserted between the B+ input pin and the Pi section B+ filter. A Dale looks to be the type resistor. I think 10w is a bit high. 

Jeep K3HVG

On 01/23/2026 9:11 PM EST Bill Mellema via MRCA <[email protected]> wrote:

 

 

Great….thanks Jeep

 

Bill N3WM


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On Friday, January 23, 2026, 7:30 PM, Jeep Platt <[email protected]> wrote:

Bill, I have the Navy book that shows solid-state rectifiers.  I will look it up in the morning...

Jeep K3HVG

 

Sent from my Verizon, Samsung Galaxy smartphone
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---

From: [email protected] <[email protected]> on behalf of Bill Mellema via MRCA <[email protected]>
Sent: Thursday, January 22, 2026 8:23:33 PM
To: Military Radio Collectors Association <[email protected]>
Subject: [MRCA] R390A dropping resistor value

 

Guys,

 

I'm in the process of solid stating the power supply on a R390A. I need the value of the series resistor listed in the field change. 

 

If anyone can help, I would appreciate it.

 

Best 73's

 

Bill N3WM

Virus-free.www.avg.com

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