[MRCA] R390A dropping resistor value

[JPHutch]

Jeep -

Is this the correct location for the modification?

Modification location ?

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 
>> <mrca at mailman.qth.net> wrote:
>> Great….thanks Jeep
>> Bill N3WM
>>
>>
>> Sent from Yahoo Mail for iPhone 
>> <https://overview.mail.yahoo.com/?.src=iOS>
>>
>> On Friday, January 23, 2026, 7:30 PM, Jeep Platt 
>> <jeepcomms at outlook.com> 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
>>     Get Outlook for Android <https://aka.ms/AAb9ysg>
>>     ------------------------------------------------------------------------
>>     *From:* mrca-bounces at mailman.qth.net
>>     <mrca-bounces at mailman.qth.net> on behalf of Bill Mellema via MRCA
>>     <mrca at mailman.qth.net>
>>     *Sent:* Thursday, January 22, 2026 8:23:33 PM
>>     *To:* Military Radio Collectors Association <mrca at mailman.qth.net>
>>     *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
>>
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