Herald RP37 vs RP37A - whats the difference? - UK Vintage Radio Repair and Restoration Discussion Forum

Broomradioman · 3rd Aug 2007, 6:26 pm

Hi All,

I have two nice black Herald RP37s but one is a RP37A. Can anyone tell me the differences?

thanks

Jim G7NKS

Paul_RK · 3rd Aug 2007, 6:35 pm

Hello Jim,

You may find there are other circuit differences - Hacker frequently made changes and most of the time they weren't accompanied by a different model number - but the basic difference between the RP37 and 37A is in the tuner head. The early model is fitted with an aluminium cased T304 tuner, the A version with the T309 which has a transparent plastic casing.

Paul

Broomradioman · 4th Aug 2007, 9:08 am

Hi Paul, is there any value/use in me noting all the S/Ns of my sets and posting them in the hacker and roberts groups? If so I will get on to it. Who should I send them to?
cheers

Jim G7NKS

Paul_RK · 4th Aug 2007, 11:23 am

Hi Jim,

They'll certainly be welcome, as helping to make up the picture of how many of each model were made and when, with some idea of how many are still around, and the various changes that were introduced during production. Just send them to me, with model number and colour and any odd features, date markings etc. Can't give my e-mail address here as it's not allowed, but you'll find it at http://groups.yahoo.com/group/hackerradiogroup/database .

Best regards,
Paul

Nickthedentist · 4th Aug 2007, 11:33 am

Or you could send them to Paul as a Private Message via this forum

Paul_RK · 4th Aug 2007, 11:44 am

Why didn't I think of that?

Yes, Hacker, Roberts and even Dynatron serial numbers are always welcome from anyone here, whether or not they're interested in joining the groups (though with a current Hacker membership roll of 155 it seems likely that most forum members with Hackers around have done so

)

The RP37 became the RP37A somewhere between nos. 15534 and 16050, so if any gap was left at all in the number sequence it was a small one.

Paul

GJR 11L · 4th Aug 2007, 6:52 pm

And '37s had a Goodmans speaker, 37As either the Celestion or, after about 1971ish I think, that Elac with the huge magnet!

Broomradioman · 5th Aug 2007, 9:54 pm

Ok will get on to it! will Pm you

3rd Aug 2007, 6:26 pm	#1
Broomradioman Tetrode Join Date: Jul 2007 Location: Biggleswade, Bedfordshire, UK. Posts: 52	Herald RP37 vs RP37A - whats the difference? Hi All, I have two nice black Herald RP37s but one is a RP37A. Can anyone tell me the differences? thanks Jim G7NKS __________________ "not another radio?!" "Yes dear - is that another bottle of Clinique/Clarins/Dr. Hauschke?"

3rd Aug 2007, 6:35 pm	#2
Paul_RK Dekatron Join Date: Nov 2003 Location: Fakenham, Norfolk, UK. Posts: 4,256	Re: Herald RP37 vs RP37A - whats the difference? Hello Jim, You may find there are other circuit differences - Hacker frequently made changes and most of the time they weren't accompanied by a different model number - but the basic difference between the RP37 and 37A is in the tuner head. The early model is fitted with an aluminium cased T304 tuner, the A version with the T309 which has a transparent plastic casing. Paul

4th Aug 2007, 9:08 am	#3
Broomradioman Tetrode Join Date: Jul 2007 Location: Biggleswade, Bedfordshire, UK. Posts: 52	Re: Herald RP37 vs RP37A - whats the difference? Hi Paul, is there any value/use in me noting all the S/Ns of my sets and posting them in the hacker and roberts groups? If so I will get on to it. Who should I send them to? cheers Jim G7NKS __________________ "not another radio?!" "Yes dear - is that another bottle of Clinique/Clarins/Dr. Hauschke?"

4th Aug 2007, 11:23 am	#4
Paul_RK Dekatron Join Date: Nov 2003 Location: Fakenham, Norfolk, UK. Posts: 4,256	Re: Herald RP37 vs RP37A - whats the difference? Hi Jim, They'll certainly be welcome, as helping to make up the picture of how many of each model were made and when, with some idea of how many are still around, and the various changes that were introduced during production. Just send them to me, with model number and colour and any odd features, date markings etc. Can't give my e-mail address here as it's not allowed, but you'll find it at http://groups.yahoo.com/group/hackerradiogroup/database . Best regards, Paul

4th Aug 2007, 11:33 am	#5
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,846	Re: Herald RP37 vs RP37A - whats the difference? Or you could send them to Paul as a Private Message via this forum

4th Aug 2007, 11:44 am	#6
Paul_RK Dekatron Join Date: Nov 2003 Location: Fakenham, Norfolk, UK. Posts: 4,256	Re: Herald RP37 vs RP37A - whats the difference? Why didn't I think of that? Yes, Hacker, Roberts and even Dynatron serial numbers are always welcome from anyone here, whether or not they're interested in joining the groups (though with a current Hacker membership roll of 155 it seems likely that most forum members with Hackers around have done so ) The RP37 became the RP37A somewhere between nos. 15534 and 16050, so if any gap was left at all in the number sequence it was a small one. Paul Last edited by Paul_RK; 4th Aug 2007 at 11:53 am.

4th Aug 2007, 6:52 pm	#7
GJR 11L Heptode Join Date: May 2004 Location: Ellington, Northumberland, UK. Posts: 815	Re: Herald RP37 vs RP37A - whats the difference? And '37s had a Goodmans speaker, 37As either the Celestion or, after about 1971ish I think, that Elac with the huge magnet! __________________ John.

5th Aug 2007, 9:54 pm	#8
Broomradioman Tetrode Join Date: Jul 2007 Location: Biggleswade, Bedfordshire, UK. Posts: 52	Re: Herald RP37 vs RP37A - whats the difference? Ok will get on to it! will Pm you __________________ "not another radio?!" "Yes dear - is that another bottle of Clinique/Clarins/Dr. Hauschke?"