Unfortunately, the SBDs on that list only go up to the SBD-3. 

Mark D 

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

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On Oct 19, 2026, at 12:34 PM, Mark K3MSB <[email protected]> wrote:


Thanks for that file Mark.

I know I have it somewhere but couldn’t find it.   It’s a good reference.

73 Mark K3MSB

On Mon, Oct 19, 2026 at 7:19 AM MARK DORNEY via ARC5 <[email protected]> wrote:
Hope this helps. Ancient Download 


Mark D. 
WW2RDO
“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

On Oct 18, 2026, at 6:35 AM, Craig Cantwell via ARC5 <[email protected]> wrote:



Anyone know this?

SBD-5  had only 2 channel MHF radio

SBD-6 added 4 channel VHF radio

 

This fact from 2 pages i had saved years ago, from ? a now extinct militaria magazine ?

Very unfortunately, i did not title the pages with the source.

 

My question is, what was the 2 channel HF radio ?

-Hue Miller

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