Registry of Ex Military Land Rovers

REMLR Radio Shack => REMLR Radio Chatter => Topic started by: Magellan on June 30, 2016, 07:40:49 PM

Title: 77 set mounting and power
Post by: Magellan on June 30, 2016, 07:40:49 PM
Gedday all, I'm in the process of mounting the 77 kit in the 'tinnie' (my daughters name for it) and was wondering about powering it. Notwithstanding the 24v system (no longer fitted) I read some where that the amp tray also converted the sparks to 12v.

Questions-

-Is this the case?
-I have a power cable that fits to the underneath of the shock mount and with two bare wires (+ & -). Is this power feed for the mount and thence to the amp and radio and can't be connected to the distribution box to run from 12v?

Cheers, Daryl
Title: Re: 77 set mounting and power
Post by: kman on June 30, 2016, 09:01:43 PM
The AM2060 needs 24V for it's internal electronics and to drive the antenna tuner. It then supplies the 12V needed by the PRC77 set.
The AM2060 has a plug on the back that mates with the mounting tray. The mounting tray has three connectors on it and one of these will be the lead you describe. It probably has four wires with two being joined for the positive connection and two being joined for the negative connection.

You need to connect it to 24V.  If you are going to install it in your landrover and don't have a source of 24V you will need to buy a 12 to 24 converter with sufficient output.


Howard
Title: Re: 77 set mounting and power
Post by: Magellan on July 01, 2016, 12:56:34 PM
Quote from: kman on June 30, 2016, 09:01:43 PM
The AM2060 needs 24V for it's internal electronics and to drive the antenna tuner. It then supplies the 12V needed by the PRC77 set.
The AM2060 has a plug on the back that mates with the mounting tray. The mounting tray has three connectors on it and one of these will be the lead you describe. It probably has four wires with two being joined for the positive connection and two being joined for the negative connection.

You need to connect it to 24V.  If you are going to install it in your landrover and don't have a source of 24V you will need to buy a 12 to 24 converter with sufficient output.


Howard

Thanks Howard, yes it's as you describe, 2 pairs of wires connected together.

As regards the 24v source, when you mention 'sufficient power' how much are you talking about?

Despite my penchant for originality, for practical reasons I was thinking of not refitting the 28v generator (a) because of its weight and I now have parabolic springs fitted and (b) I don't have one or the cabling.

Thanks for your reply, Daryl
Title: Re: 77 set mounting and power
Post by: Mick_Marsh on July 01, 2016, 01:38:27 PM
Why not keep it as a portable unit?

Or you could just bypass the 24v system and wire it to the 12v system.
Title: Re: 77 set mounting and power
Post by: Magellan on July 01, 2016, 03:22:40 PM
Quote from: Mick_Marsh on July 01, 2016, 01:38:27 PM
Why not keep it as a portable unit?

Or you could just bypass the 24v system and wire it to the 12v system.

Gedday Mick, that was my intention but as you know, one thing begats another! (And I can't help myself) I'll goes as far as practicable in originality and stop.

Having made this decision I now have to relocate the HF from the table to somewhere  :o

The theme is somewhere between an FFR and (to paraphrase Carzee) a LRCV, 'C' being for Camping  ;)

Daryl