SSB Products Sphinx transmitter - UK Vintage Radio Repair and Restoration Discussion Forum

G4BZI Roger · 7th Mar 2007, 2:21 pm

Can any members help ?

Having been prompted by a recent article in PW, I've started restoring
a butchered/modified example of the Sphinx to "close to original". I'm
now stuck because I don't have a cct diagram for either the psu or the
inbuilt tx/standby/net switching. I do have the manual and the SWM/PW article, but these do not help i these areas.

All/any assistance appreciated.

Regards,
Roger
G4BZI

real2real · 9th May 2007, 1:54 pm

Roger

Bit late seeing this

Have you tried Richard Birkett
http://www.rabeng.co.uk/radio/radiobits.htm
No 477

The only thing is that it might be a reprint of the SWM article, I have a Sphinx working nicely, I did have 3 but sold 2 on..
The PW article by Ben Nock is just a reprint of the SWM one.
73
Andy G3UEQ

G4BZI Roger · 14th May 2007, 4:32 pm

Andy,

Thanks for the reply. I did contact Richard Birkett and obtained some info incl. the SWM article but no cct diagram. I wonder if your Sphinx is unmodified - if so could you confirm the value/rating of the large dropper resistor associated with the stabilised supply. I need to obtain one to replace this (it was removed by a previous owner).

73

Roger
G4BZI

real2real · 11th Jun 2007, 1:43 pm

Roger

Sorry for delay in replying, I have been away. I will check tonight if not to late for you and get back asap

Regards

Andy

7th Mar 2007, 2:21 pm	#1
G4BZI Roger Pentode Join Date: Nov 2005 Location: Crewe, Cheshire, UK. Posts: 138	SSB Products Sphinx transmitter Can any members help ? Having been prompted by a recent article in PW, I've started restoring a butchered/modified example of the Sphinx to "close to original". I'm now stuck because I don't have a cct diagram for either the psu or the inbuilt tx/standby/net switching. I do have the manual and the SWM/PW article, but these do not help i these areas. All/any assistance appreciated. Regards, Roger G4BZI

9th May 2007, 1:54 pm	#2
real2real Retired Dormant Member Join Date: Jul 2005 Location: Barnham, Nr Bognor Regis, West Sussex, UK. Posts: 40	Re: SSB Products Sphinx transmitter Roger Bit late seeing this Have you tried Richard Birkett http://www.rabeng.co.uk/radio/radiobits.htm No 477 The only thing is that it might be a reprint of the SWM article, I have a Sphinx working nicely, I did have 3 but sold 2 on.. The PW article by Ben Nock is just a reprint of the SWM one. 73 Andy G3UEQ

14th May 2007, 4:32 pm	#3
G4BZI Roger Pentode Join Date: Nov 2005 Location: Crewe, Cheshire, UK. Posts: 138	Re: SSB Products Sphinx transmitter Andy, Thanks for the reply. I did contact Richard Birkett and obtained some info incl. the SWM article but no cct diagram. I wonder if your Sphinx is unmodified - if so could you confirm the value/rating of the large dropper resistor associated with the stabilised supply. I need to obtain one to replace this (it was removed by a previous owner). 73 Roger G4BZI

11th Jun 2007, 1:43 pm	#4
real2real Retired Dormant Member Join Date: Jul 2005 Location: Barnham, Nr Bognor Regis, West Sussex, UK. Posts: 40	Re: SSB Products Sphinx transmitter Roger Sorry for delay in replying, I have been away. I will check tonight if not to late for you and get back asap Regards Andy