PRC351 circuit diagrams? - UK Vintage Radio Repair and Restoration Discussion Forum

Arqiva BOC · 8th Sep 2015, 12:12 am

Hi All,

Can anyone help me out with a set of circuit diagrams for the Clansman PRC351?

I'm trying to download them from VMARS but the IT police here won't let me!

Martin

AC/HL · 8th Sep 2015, 11:38 am

Quite understandable, have you tried from home?

Arqiva BOC · 11th Sep 2015, 5:17 pm

Yes, managed to at least download the files, but even with the password I can't seem to get some of them to unzip!

True to form the ones I have managed to access are not the ones I need!

rovernut · 11th Sep 2015, 7:57 pm

Hi

Firstly I assume you are member of VMARS

Secondly; as far as the circuits are concerned. I am not aware of them being available as I have been after a set for a little while. [I hope I am proved wrong]

Cheers
Richard
m0ysr

trh01uk · 12th Sep 2015, 6:11 pm

I know VMARS has a copy of the EMERS because I provided them - but they have no schematics beyond block diagrams.

I'm not aware that the set was ever sold commercially, so there may be no schematics available in published form. The MOD would have had them in a document called a Base Repair Information File (BRIF), but no-one I've spoken to has ever seen one of these documents.

The EMERs are moderately useful, at least for locating faults down to module level. Army techs only ever swopped modules out in the field, hence the lack of schematics.

Richard

Arqiva BOC · 13th Sep 2015, 8:45 am

Sorry, that should have been the 19-set forum! not VMARS.

http://www.royalsignals.org.uk/clansman.htm

I think they are still the files you provided though Richard?

I'm actually after the circuit of the synthesiser programmable divider. If they are not about I might sling a FOIA request in for them

trh01uk · 13th Sep 2015, 1:43 pm

I have no particular knowledge of where the WS19 group got their files from. I have distributed my own copies to various email lists, and also left some in the vmars archive. I obtained a number of EMERs from the MOD direct originally in the days when they were still subject to the OSA. When they sent them over they had been officially "declassified".

The problem with just putting the files on to a website is that they remain Crown copyright - and will do for some decades to come. So when I provide copies I get people to send me an email confirming they are "for personal use only". That's the same thing you have to do when you copy something in a public library.

I wish you luck with a FOI request for the schematics. Chances are they will say they don't have them - but its probably worth a try.

Richard

8th Sep 2015, 12:12 am	#1
Arqiva BOC Retired Dormant Member Join Date: Aug 2014 Location: Emley Moor, West Yorkshire, UK. Posts: 92	PRC351 circuit diagrams? Hi All, Can anyone help me out with a set of circuit diagrams for the Clansman PRC351? I'm trying to download them from VMARS but the IT police here won't let me! Martin

8th Sep 2015, 11:38 am	#2
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: PRC351 circuit diagrams? Quite understandable, have you tried from home?

11th Sep 2015, 5:17 pm	#3
Arqiva BOC Retired Dormant Member Join Date: Aug 2014 Location: Emley Moor, West Yorkshire, UK. Posts: 92	Re: PRC351 circuit diagrams? Yes, managed to at least download the files, but even with the password I can't seem to get some of them to unzip! True to form the ones I have managed to access are not the ones I need!

11th Sep 2015, 7:57 pm	#4
rovernut Pentode Join Date: Oct 2010 Location: Fareham, Hampshire, UK. Posts: 112	Re: PRC351 circuit diagrams? Hi Firstly I assume you are member of VMARS Secondly; as far as the circuits are concerned. I am not aware of them being available as I have been after a set for a little while. [I hope I am proved wrong] Cheers Richard m0ysr

12th Sep 2015, 6:11 pm	#5
trh01uk Octode Join Date: Nov 2010 Location: Ross-on-Wye, Herefordshire, UK. Posts: 1,654	Re: PRC351 circuit diagrams? I know VMARS has a copy of the EMERS because I provided them - but they have no schematics beyond block diagrams. I'm not aware that the set was ever sold commercially, so there may be no schematics available in published form. The MOD would have had them in a document called a Base Repair Information File (BRIF), but no-one I've spoken to has ever seen one of these documents. The EMERs are moderately useful, at least for locating faults down to module level. Army techs only ever swopped modules out in the field, hence the lack of schematics. Richard

13th Sep 2015, 8:45 am	#6
Arqiva BOC Retired Dormant Member Join Date: Aug 2014 Location: Emley Moor, West Yorkshire, UK. Posts: 92	Re: PRC351 circuit diagrams? Sorry, that should have been the 19-set forum! not VMARS. http://www.royalsignals.org.uk/clansman.htm I think they are still the files you provided though Richard? I'm actually after the circuit of the synthesiser programmable divider. If they are not about I might sling a FOIA request in for them

13th Sep 2015, 1:43 pm	#7
trh01uk Octode Join Date: Nov 2010 Location: Ross-on-Wye, Herefordshire, UK. Posts: 1,654	Re: PRC351 circuit diagrams? I have no particular knowledge of where the WS19 group got their files from. I have distributed my own copies to various email lists, and also left some in the vmars archive. I obtained a number of EMERs from the MOD direct originally in the days when they were still subject to the OSA. When they sent them over they had been officially "declassified". The problem with just putting the files on to a website is that they remain Crown copyright - and will do for some decades to come. So when I provide copies I get people to send me an email confirming they are "for personal use only". That's the same thing you have to do when you copy something in a public library. I wish you luck with a FOI request for the schematics. Chances are they will say they don't have them - but its probably worth a try. Richard