hamfan22
Member
I just received my Tk 3180 and I popped the option board area open and saw this. Does anyone know what this board is? It is soldered and doesn’t use the white connector which to me seems a little odd.
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Does anyone know what this is?
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vagrant
ker-muhj-uhn
I think that may be a solder version of the voice scrambler board (SC20-460). I could be wrong, but the manual shows that optional board connects to the TXD1 (PTT), which correlates with your photograph. Additional solder points do as well except for point 5A. The manual does not show it connected to that point.
Hmm...yes, one of the wires is connected to 5A instead of SB2.
5A = 5 volts 78mA max
SB2 = 7.5V typical with 100mA max
Perhaps that particular voice scrambler board needs less juice. If it works you're good.
Hmm...yes, one of the wires is connected to 5A instead of SB2.
5A = 5 volts 78mA max
SB2 = 7.5V typical with 100mA max
Perhaps that particular voice scrambler board needs less juice. If it works you're good.
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It doesn't look like any 460 board I've seen. Could be a scrambler from Midian or other brand.
If you remove it, please note you'll likely need to reinstall 0 ohm resisters to direct audio back to the transceiver instead of the scrambler board. Best to leave well enough alone
ecps92
Member
Looks like the ole Midian Scramblers
Midian Electronics - a leader in tone signaling and voice security.
Since 1975 Midian Electronics has manufactured quality voice scramblers, tone signaling, paging and alarm products, remote control, fleet management, repeater makers and telephone interconnects.
www.midians.com
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