Replacement 150 candlestick transmitter - UK Vintage Radio Repair and Restoration Discussion Forum

PJL · 14th Feb 2016, 7:27 pm

The No.10 transmitter currently fitted is the weak link in an otherwise very usable telephone.

Is there an electronic replacement available? Also, does the No.13 transmitter fit.

Also, does anyone have an u/s transmitter that I could use to strip down and construct an electronic version?

Pellseinydd · 14th Feb 2016, 9:11 pm

The Transmitter Inset No 13 was the direct replacement for the No 10 - should make for an easy replacement!

Ian

Dave Moll · 14th Feb 2016, 11:15 pm

Quote:

Originally Posted by PJL

Is there an electronic replacement available?

Transmitter 21A (the red version with the removable covers) can be inserted if its outer (red) cover is removed, though you will probably need to remove the centre pin from the cavity and add some padding.

ThePillenwerfer · 15th Feb 2016, 1:50 pm

I make my own electrect transmitters.

— Joe

Herald1360 · 16th Feb 2016, 1:29 pm

Electret?

Or is it a reference to the interesting bridge arrangement?

Dave Moll · 16th Feb 2016, 4:16 pm

This Wikipedia article may help to clarify.

PJL · 27th Feb 2016, 10:26 pm

I bought a 13C from 1959 which works much better than the No.10 from 1936. I had planned to use it as a shell for an electronic microphone but I will spare it the surgery as it has made the phone usable. Still sounds a bit muffled but I guess that goes with the territory.

BigClick · 25th Mar 2016, 6:14 pm

Quote:

Originally Posted by ThePillenwerfer

I make my own electrect transmitters.

Hey Joe,

That looks very good indeed. Any chance of more pictures and narrative?

ThePillenwerfer · 25th Mar 2016, 11:35 pm

See http://joefreeman.weebly.com/microphones.html

The PCB was made with the toner-transfer method.

I can't think of anything else to add but if you've any specific questions please feel free at ask.

ThePillenwerfer · 26th Mar 2016, 6:53 pm

Further to the above I've managed to find the original article which goes into more technical detail: http://www.vmarsmanuals.co.uk/newsle...eplacement.pdf

— Joe

14th Feb 2016, 7:27 pm	#1
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Replacement 150 candlestick transmitter The No.10 transmitter currently fitted is the weak link in an otherwise very usable telephone. Is there an electronic replacement available? Also, does the No.13 transmitter fit. Also, does anyone have an u/s transmitter that I could use to strip down and construct an electronic version?

14th Feb 2016, 9:11 pm	#2
Pellseinydd Heptode Join Date: Jul 2007 Location: Flintshire, UK. Posts: 707	Re: Replacement 150 candlestick transmitter The Transmitter Inset No 13 was the direct replacement for the No 10 - should make for an easy replacement! Ian

16th Feb 2016, 1:29 pm	#5
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: Replacement 150 candlestick transmitter Electret? Or is it a reference to the interesting bridge arrangement? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

16th Feb 2016, 4:16 pm	#6
Dave Moll Dekatron Join Date: Feb 2005 Location: West Cumbria (CA13), UK Posts: 6,127	Re: Replacement 150 candlestick transmitter This Wikipedia article may help to clarify. __________________ Mending is better than Ending (cf Brave New World by Aldous Huxley)

27th Feb 2016, 10:26 pm	#7
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Replacement 150 candlestick transmitter I bought a 13C from 1959 which works much better than the No.10 from 1936. I had planned to use it as a shell for an electronic microphone but I will spare it the surgery as it has made the phone usable. Still sounds a bit muffled but I guess that goes with the territory.

25th Mar 2016, 11:35 pm	#9
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: Replacement 150 candlestick transmitter See http://joefreeman.weebly.com/microphones.html The PCB was made with the toner-transfer method. I can't think of anything else to add but if you've any specific questions please feel free at ask. __________________ "Experts are only good at one thing: explaining why something will not work!"

26th Mar 2016, 6:53 pm	#10
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: Replacement 150 candlestick transmitter Further to the above I've managed to find the original article which goes into more technical detail: http://www.vmarsmanuals.co.uk/newsle...eplacement.pdf — Joe __________________ "Experts are only good at one thing: explaining why something will not work!"