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 Post subject: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Mar Sun 08, 2020 8:38 am 
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Joined: Jan Wed 15, 2020 7:48 am
Posts: 39
My 7700 was the property of a good friend named Willie who used it on his Lello 34 sailing yacht, it crossed the South Atlantic Ocean many times and without harm.

Willie used the 12 volt connection kit that was available from Hamrad here in Cape Town to power up the radio.

I no longer use the 12 volt connection but its still there when required?


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Fri 06, 2020 8:50 pm 
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Joined: Nov Fri 06, 2020 8:38 pm
Posts: 11
Thanks for posting this information about the DC-7700 12 volt conversion kit. I have a FRG-7700 but it does not have this conversion kit installed.
Since the kits are not available anymore, has anyone done the conversion with over the counter parts and have the instructions and part numbers to do this mod?
Thanks in advance.


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Sat 07, 2020 5:51 am 
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Joined: Jan Wed 15, 2020 7:48 am
Posts: 39
What you need to know is there, just buy a suitable plug and socket, find pos & neg on the PCB and do the connections, make sure that you connect the right way to your 12v power supply!


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Sat 07, 2020 5:58 pm 
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Joined: Dec Sat 28, 2019 4:18 pm
Posts: 557
Location: Corinth, TX
You might want to include a silicon diode internally in series with the 12 volt feed to prevent a mispolarized mistake.

John


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Mon 16, 2020 4:54 pm 
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Joined: Nov Fri 06, 2020 8:38 pm
Posts: 11
The "DC Jack Assembly" is not an over the counter part that is available I suppose. What 12V plug would you recommend using that would fit the 7700 rear chassis?


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Mon 16, 2020 5:10 pm 
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Joined: Nov Fri 06, 2020 8:38 pm
Posts: 11
One of these connectors may work. Just need the measurements I think.

https://www.digikey.com/en/products/fil ... kXgJHiJVoA


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 Post subject: Re: A 12 volt DC connection for the Yaesu FRG 7700 reciever
PostPosted: Nov Tue 17, 2020 2:17 am 
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Joined: Nov Fri 06, 2020 8:38 pm
Posts: 11
Now I am on the search for the 2-pin socket connector (P40) in the schematic.
Any idea how to go about determining what I need to look for?


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