Patricio
I haven't seen a PRM-4031 for sale recently. I suspect you will have to
wait until one comes up on E-Bay or one of the yahoo groups.
Regarding your question on the 7-pin plugs you really need special
cylindrical tools to fit the keying slots in the plug body - I have had
some success with the angled style of circlip pliers as a substitute.
Serveral E-Bay sellers sell prewired plugs which is much easier - the wire
colour code is fairly standard. See items 360278187308 and 370407091897 - I
have had rather better luck with Canmec than Haigh-Agri in my own
purchases.
Regards
Iain
73 de G0OZS
On Jul 24 2010, Patricio Diez Butty wrote:
Thank you very much Iain. Great the schematic and all the info.
I was looking the Racal group pics and I would like to find a Racal
PRM-4031. Do you know where I can get one?
Best regards, and thank you again.
Patricio
lw8dbp
Lic. Patricio Diez Butty
--- El vie 23-jul-10, Iain G. Moffat <iain@...> escribi??:
De: Iain G. Moffat <iain@...>
Asunto: Re: [Racal-manpacks] PRC-349 head/throat set wiring
Para: Racal-manpacks@...
Fecha: viernes, 23 de julio de 2010, 18:20
?
Patricio
The 349 headset is compatible with the connections of the other Clansman
audio equipment which are:
A Mic +
B Mic -
C NC on Headgear and Pressil / Power feed from radio
D Left Headphone
E Headphone Ground
F NC on Headgear / PTT on Pressil
G RH Headphone
In the 349 case only pins A (red wire), B (green), D (Orange), E (White)
and F (Black) are used.
Pins are marked on the connector insert. Pin G is the centre pin and the
others looking into the pins of the plug are ordered clockwise from Pin A
which is next to the widest key projection on the plug.
According to the diagram I have, the wires to pin A and B for the
microphone should be red and green. Unlike most Clansman headsets the PTT
switch does not have a second pair of contacts to isolate the microphone
in
the receive position - it simply connects pins E and F when pressed.
Hope this helps
Iain
73 de G0OZS
On Jul 23 2010, p10butty wrote:
Hello everybody, My name is Patricio and I live in Argentina. I am a
collector of military stuff and radios are one of my favorites. I have
US, German, Holand, Japanis and French radios.
My first British radio is this non working PRC-349, so I was planing to
change the headset/Throat Mic connector in order to use it in other
radio.
I desassembly the headset and found that the ear piece have a white and
orange wire. I also see that there (inside the rubber headset) there are
a red, a green, and a brown wire, but am not sure which cable goes tothe
mic.
I open the PTT little box and check that the swich only have a green
wire
in one side and a black on the other that connect when you push to talk.
Inside the box there are three nuts that are interconnected all the
three. The green swich cable is connected to the middle nut. A brown
cable that comes from the headset is connected to the first nut and the
brown cable that comes from the connector is connected to the third nut.
Calbes red/green/blue go through the box.
I check that cable white is E, cable black is F and cable orange is D.
But I can't find the mic cables in the connector.
If somebody could help me, I will appreciate very much.
Thanks
Patricio
--
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Iain G. Moffat (iain@...) +44(0)7850 424 007
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