Prc 77

Want to put radios in your jeep? Discuss it here.

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kmam
Sergeant Major
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Location: Kuranda, Far North Queensland, Australia

Re: Prc 77

Unread post by kmam » November 30th, 2016, 10:19 pm

Nah, you have to buy a vhf low band radio. For example I have a Wouxun KG-899E which covers from 66 to 88 MHz so the segment from 66 to 76 is common to both the 77 set and the Wouxun. Not sure what is available on the US market but you sometimes find mobile radios for that band on eBay, especially in the UK where they are quoted as "taxi radios".

Howard
Howard

Daimler Ferret Mk 1/2
AM General M151A2
Austin Champ

Husker
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Location: Fairfax Virginia

Re: Prc 77

Unread post by Husker » December 12th, 2016, 1:22 pm

Got ny battery adapters and they don't seem to function is there something special I need to do?
US Army Fort Belvoir

19XX M35 something. Sold......
1972 M151A2
1967 M416
On the hunt for an M1031

kmam
Sergeant Major
Sergeant Major
Posts: 524
Joined: June 6th, 2015, 7:39 am
Location: Kuranda, Far North Queensland, Australia

Re: Prc 77

Unread post by kmam » December 12th, 2016, 4:16 pm

We bought three for our radios. The other two worked fine but mine didn't: turned out to be an internal connection.

Suggest this: get a multimeter and check for the correct voltage at the socket that connects to the radio.

If there is incorrect voltage make sure you have good batteries and they are in the right orientation.

If correct voltage have a close look to be sure the socket is clean and in good condition to connect to the radio.

If no voltage leave the negative lead in the socket and connect the positive lead to the positive end of each of the groups of batteries in turn. You should get the right voltage at each stage, i.e., 4.5v, 9v, 13.5v, 15v although new batteries will read a little higher. If you get to the full 15v explore carefully the connection from the last battery to the socket.

Should you get no voltage doing the last step then reverse the process, i.e. leave the positive lead connected to the socket and check each group for the voltages but they will read -4.5v, -9v, -13.5v, -15v.

Howard
Howard

Daimler Ferret Mk 1/2
AM General M151A2
Austin Champ

Husker
Master Sergeant
Master Sergeant
Posts: 374
Joined: August 26th, 2016, 1:52 pm
Location: Fairfax Virginia

Re: Prc 77

Unread post by Husker » December 13th, 2016, 7:46 am

Thanks
US Army Fort Belvoir

19XX M35 something. Sold......
1972 M151A2
1967 M416
On the hunt for an M1031

Husker
Master Sergeant
Master Sergeant
Posts: 374
Joined: August 26th, 2016, 1:52 pm
Location: Fairfax Virginia

Re: Prc 77

Unread post by Husker » December 13th, 2016, 8:04 pm

So my adapters work and one radio transmits and revives but they other doesn't recover only transmits when the radio is receiving it makes a rolling static sounds
US Army Fort Belvoir

19XX M35 something. Sold......
1972 M151A2
1967 M416
On the hunt for an M1031

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