Thank you again Dan. Yes I see the cell you mean now.
I will change it.
I search the net but I couldn't find the manual for this unit.
Best regards,
Patricio
Lic. Patricio Diez Butty
--- El lun 2-ago-10, Dan Rae ±ð²õ³¦°ù¾±²ú¾±¨®:
|
De: Dan Rae
Asunto: Re: [Racal-manpacks] Racal MA 4224 unit
Para: Racal-manpacks@...
Fecha: lunes, 2 de agosto de 2010, 12:14
?
Patricio Diez Butty wrote:
>
>
> Thank you Dan for your information.
> "make sure the Nicad battery has not leaked and damaged the circuit
> board."
> Sorry I don't follow. This unit have a batery inside?
>
It has a Nicad battery to back up the settings. It is an epoxy
encapsulated thing, yellow with white printed label, about 3 x 5 cm,
visible on one of the boards when you remove the case. It has two or
three button cells in it and can be replicated easily enough with NiMH
cells and then will not leak in the future.
> My Thomson TRC 310 have two pins with 15 V Pos and the other with 15 V
> Neg. Would this work?
>
I have used these with both 12V and 24 V Racals, so presumably 15 V is
fine.
>
> I know that almost all British radios uses a 300 OHms audio
> accesories. When you refer to audio levels is because of this?
>
> This unit is for the PRM-4031 family of radios?
>
It matches those in appearance yes. I have used it with both the TRA931
and 967. Fishermen use it with presumably standard marine VHF radios,
Narco trafficantes, I have no idea, but they can also be used with
telephones and fax machines.
>
> Pin B should be power in?
>
>
Patricio, I am pretty sure the manual is available for download
somewhere on line, have you searched for it? In any case the plug
wiring is the standard Racal audio one, but I don't have my books to
hand.
Dan
?
|
Dan
That was very much what a contact I have who used to work for Racal rather thought of thir technical expertise.
They were said to have purchased channelled radios so they did not know what frequencies they were using as they could not "manage" them!
Mike B
toggle quoted message
Show quoted text
On 02/08/2010 16:00, Dan Rae wrote:
Andy Jackson G8JAC wrote:
> Dan wrote:
>
> ..>It is an interestingly designed unit; despite the millions of possible
> ..>settings of the internal links etc., a unit I have that had been
used by
> ..>the Iraqi army Republican Guard had strange modifications inside,
> ..>presumably because they were worried that the manufacturer might have
> ..>done something sneaky that would make it easier to decrypt.
> ..>Pure paranoia.
>
> But wasn't that exactly what happened during the first Iraq war?
> It is widely believed that Racal co-operated with the British army to
> decrypt Iraqi transmissions made with the Jaguar radio system that Racal
> sold them.
>
> Andy G8JAC
>
>
Andy, I've no idea. Just because you are paranoid doesn't mean they
aren't listening :^) However I would think that a frequency hopping
radio is slightly easier to crack than the system used by the 4224, but
perhaps not, I'm absolutely not an expert. In the case of this 4224
someone had gone to a lot of trouble, including fitting a new eprom,
and some board re-wiring with some extra circuitry. Not the usual level
of 'skilled' work seen inside their 'surplus' equipment that I have
seen, which is of the order of fitting a nail instead of a fuse, and
replacing a capacitor by placing a big blob of solder over both wires.
Dan
Dan
|
Hi to all!
I have a good looking ,fully functional PRM-4021
2-16 MhZ MANPACK.
for all details please contact off list
4z4rb@...
thank you.
Baruch 4z4rb
|
Patricio Diez Butty wrote:
Thank you Dan for your information.
"make sure the Nicad battery has not leaked and damaged the circuit board."
Sorry I don't follow. This unit have a batery inside?
It has a Nicad battery to back up the settings. It is an epoxy encapsulated thing, yellow with white printed label, about 3 x 5 cm, visible on one of the boards when you remove the case. It has two or three button cells in it and can be replicated easily enough with NiMH cells and then will not leak in the future. My Thomson TRC 310 have two pins with 15 V Pos and the other with 15 V Neg. Would this work?
I have used these with both 12V and 24 V Racals, so presumably 15 V is fine.
I know that almost all British radios uses a 300 OHms audio accesories. When you refer to audio levels is because of this?
This unit is for the PRM-4031 family of radios?
It matches those in appearance yes. I have used it with both the TRA931 and 967. Fishermen use it with presumably standard marine VHF radios, Narco trafficantes, I have no idea, but they can also be used with telephones and fax machines.
Pin B should be power in?
Patricio, I am pretty sure the manual is available for download somewhere on line, have you searched for it? In any case the plug wiring is the standard Racal audio one, but I don't have my books to hand. Dan
|
Andy Jackson G8JAC wrote: Dan wrote:
..>It is an interestingly designed unit; despite the millions of possible
..>settings of the internal links etc., a unit I have that had been used by
..>the Iraqi army Republican Guard had strange modifications inside,
..>presumably because they were worried that the manufacturer might have
..>done something sneaky that would make it easier to decrypt.
..>Pure paranoia.
But wasn't that exactly what happened during the first Iraq war?
It is widely believed that Racal co-operated with the British army to
decrypt Iraqi transmissions made with the Jaguar radio system that Racal
sold them.
Andy G8JAC
Andy, I've no idea. Just because you are paranoid doesn't mean they aren't listening :^) However I would think that a frequency hopping radio is slightly easier to crack than the system used by the 4224, but perhaps not, I'm absolutely not an expert. In the case of this 4224 someone had gone to a lot of trouble, including fitting a new eprom, and some board re-wiring with some extra circuitry. Not the usual level of 'skilled' work seen inside their 'surplus' equipment that I have seen, which is of the order of fitting a nail instead of a fuse, and replacing a capacitor by placing a big blob of solder over both wires. Dan Dan
|
Thank you Dan for your information.
"make sure the Nicad battery has not leaked and damaged the circuit board."
Sorry I don't follow. This unit have a batery inside?
My Thomson TRC 310 have two pins with 15 V Pos and the other with 15 V Neg. Would this work?
I know that almost all British radios uses a 300 OHms audio accesories. When you refer to audio levels is because of this?
This unit is for the PRM-4031 family of radios?
Pin B should be power in?
Thanks a lot
Best regards,
Patricio
Lic. Patricio Diez Butty
--- El lun 2-ago-10, Dan Rae ±ð²õ³¦°ù¾±²ú¾±¨®:
|
De: Dan Rae
Asunto: Re: [Racal-manpacks] Racal MA 4224 unit
Para: Racal-manpacks@...
Fecha: lunes, 2 de agosto de 2010, 10:57
?
p10butty wrote:
> Hello guys,
>
> I get an almost new Racal MA 4224 encryption unit. They seem that our Army bought them before 1982. They are new. I think they don't used them.
>
> My question should be: Would I be able to connect this unit to any radio?
>
If the audio levels are similar to those from a Racal radio, then yes.
> Does it need power from the radio that pass through the TCVR connector?
>
>
Yes. Where else could it come from?
But you are going to need two ( or more ) of course. You can check
pairs of them by connecting one to each audio socket and using the
Intercom setting on those Racal radios that have it. But in the
majority of countries it is illegal to use these on the amateur
frequencies. They were quite popular with Alaskan fishermen and some
folk in Central America which may explain the stupid prices they
sometimes fetch.
It is an interestingly designed unit; despite the millions of possible
settings of the internal links etc., a unit I have that had been used by
the Iraqi army Republican Guard had strange modifications inside,
presumably because they were worried that the manufacturer might have
done something sneaky that would make it easier to decrypt. Pure paranoia.
And make sure the Nicad battery has not leaked and damaged the circuit
board.
Dan
ac6ao / g3ncr
?
|
Dan wrote:
..>It is an interestingly designed unit; despite the millions of possible
..>settings of the internal links etc., a unit I have that had been used by
..>the Iraqi army Republican Guard had strange modifications inside,
..>presumably because they were worried that the manufacturer might have
..>done something sneaky that would make it easier to decrypt.
..>Pure paranoia.
But wasn't that exactly what happened during the first Iraq war?
It is widely believed that Racal co-operated with the British army to
decrypt Iraqi transmissions made with the Jaguar radio system that Racal
sold them.
Andy G8JAC
|
p10butty wrote: Hello guys,
I get an almost new Racal MA 4224 encryption unit. They seem that our Army bought them before 1982. They are new. I think they don't used them.
My question should be: Would I be able to connect this unit to any radio?
If the audio levels are similar to those from a Racal radio, then yes. Does it need power from the radio that pass through the TCVR connector?
Yes. Where else could it come from? But you are going to need two ( or more ) of course. You can check pairs of them by connecting one to each audio socket and using the Intercom setting on those Racal radios that have it. But in the majority of countries it is illegal to use these on the amateur frequencies. They were quite popular with Alaskan fishermen and some folk in Central America which may explain the stupid prices they sometimes fetch. It is an interestingly designed unit; despite the millions of possible settings of the internal links etc., a unit I have that had been used by the Iraqi army Republican Guard had strange modifications inside, presumably because they were worried that the manufacturer might have done something sneaky that would make it easier to decrypt. Pure paranoia. And make sure the Nicad battery has not leaked and damaged the circuit board. Dan ac6ao / g3ncr
|
Hello guys,
I get an almost new Racal MA 4224 encryption unit. They seem that our Army bought them before 1982. They are new. I think they don't used them.
My question should be: Would I be able to connect this unit to any radio?
Does it need power from the radio that pass through the TCVR connector?
Thanks in advance for your help.
Best regards to all,
Patricio
|
Re: Spare Clansman Handsets
When you say Not the later ones for the Syncal 30, they are in fact the
earlier ones, the Syncal 30 has 6 pin Amphenol connector, and the Later
Clansman range has 7 pins, also amphenol. These have 7-pin Amphenol conectors, but the keying is NOT the same as the PRM 4090. The 6-pin Syncal 30 handsets fit the 7-pin connectors on the PRM 4090 but the Clansman connectors will not. Is that confusing enough? This sort of confusion is in fact how I wound up with several handsets that don't fit... --scott
|
I have three extra handsets, 5965-99-620-5669, in Virginia, USA. They have
the Clansman connector (not the later one for the Syncal 30) and are unused
and look almost new. Make an offer.
--scott
|
Racal Interconnection Box Clansman - Cougar
I have one of these, NSN 5810-99-895-7927, which has a 7 pin female connection for the Clansman harness and a 7 pin male connection for the Cougar set. I would ideally like the circuit for it but would be delighted to know the pinouts on the Cougar socket especially.
Thanks,
Howard
|
Re: Spare Clansman Handsets
Scott
?
When you say Not the later ones for the Syncal 30, they are in fact the
earlier ones, the Syncal 30 has 6 pin Amphenol connector, and the
Later?Clansman range has 7 pins, also amphenol.
?
Stuart
G0TBI
|
Re: Need Price for PRM 4021
In a message dated 26/07/2010 17:50:06 GMT Daylight Time,
market.area@... writes:
Hi All,
?
Anybody know price of Racal PRM 4021 (second hand) including battery
case, whip antenna, handset.
?
?
Aris - YC 1 RSC
------------------------
?
There are no prices as such Aris. Every seller wants as much
as he can get, every buyer wants it for nothing.
?
Not to mention little variables like condition, acc's, cost of
shipping it etc, etc, et al.
?
cherri pip. Ben.
|
Re: PRC-349 head/throat set wiring
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
-- ====================================================== Iain G. Moffat (iain@...) +44(0)7850 424 007 ======================================================
|
Re: PRC-349 head/throat set wiring
Thank you guys for helping me in my project.
I found that the green and red cables go from the connector up to the rubber headset. Then there are a white and a brown cables that are linked to the red and green ones with little connectors. These two cables (white & brown)are the ones that goes to the throat mic. In my case, they were disconected.
I would like to disasembly the audio 7 pins connector without destroying it. But for me, it is difficult. (I know have to deal with the U-229, U-161, U-77 and even the Thomson TRC 300 special ones, but the british 7 pins are a mistery for me.
Thanks
Patricio
lw8dbp
toggle quoted message
Show quoted text
--- In Racal-manpacks@..., Patricio Diez Butty <p10butty@...> 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
--
======================================================
Iain G. Moffat (iain@...) +44(0)7850 424 007 begin_of_the_skype_highlighting??????????????+44(0)7850 424 007??????end_of_the_skype_highlighting
======================================================
|
Hi All,
?
Anybody know price of Racal PRM 4021 (second hand) including battery case, whip antenna, handset.
?
?
Aris - YC 1 RSC |
|
Hi all!
Just back from War and Peace show - hot dusty and excellent!
The other excellent news is that Johnsons of Leeds were selling recently refurbished by ABRO, as new looking, PRC 320 with all the kit on a fram for 150.
Now that has to be good unless you want to make a buck or two!
Mike B
toggle quoted message
Show quoted text
On 22/07/2010 18:50, martin wrote:
Hi All
you are invited to join the prc-320 user group, dedicated to the
Clansman prc320 family.
here you will be able to exchange technical ideas,problems, fixes, buy
and sell ect.
I look forward to your visit.
Martin G7JWR
|
Re: PRC-349 head/throat set wiring
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 ±ð²õ³¦°ù¾±²ú¾±¨®:
|
De: Iain G. Moffat
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
>
>
--
======================================================
Iain G. Moffat (iain@...) +44(0)7850 424 007
======================================================
?
|
Re: PRC-349 head/throat set wiring
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
-- ====================================================== Iain G. Moffat (iain@...) +44(0)7850 424 007 ======================================================
|
Patman