[MRCA] SEA 112 HF Marine Transceiver

[mstangelo at comcast.net]

Chris,

I have a SEA 322 but could not find any information on the SEA 112. My 322 can be configured via a keypad to operate on the Amateur frequencies but I don't see any way to program on the picture you referenced.

Do you have a dummy load? If so you can check to see if the radio works on the Marine SSB frequencies.

Mike N2MS


> On 06/25/2023 10:08 PM EDT Christopher Bowne <aj1g at sbcglobal.net> wrote:
> 
> 
> Found a reportedly working condition one of these radios at a local secondhand marine supply store today. Followed me home for very little money. Does anyone have any experience using this set on amateur frequencies? Channelized set, capable of SSB and AM, I’m guessing it’s capable of about 100 watts output. Have not found much information on it online so far. Someone else posted a thread on a marine electronics forum on how to use them on amateur frequencies but very little
> Info there. Someone mentioned that the operating frequencies were set using programmed settings on an EPROM….
> 
> Here’s a stock image of one of them.
> 
> https://www.hfradio.com.au/codan_%20barrett_qmac%20hf_radio_information/RADIOS/sea_112.htm.
> 
> Thinking perhaps a DDS might be used to develop the required excitation to the mixing scheme instead of an internal PLL synthesizer?
> 
> Chris B. AJ1G Stonington CT
>