Trio 9R59DS - UK Vintage Radio Repair and Restoration Discussion Forum

JohnG6DFH · 27th Sep 2022, 11:21 pm

Hi I just purchased a Trio 9r59ds and want to connect a digital frequency display,only I haven't got a clue where on the receiver to connect it to,I got the circuit diagram if someone could show me where and how to connect it thank you.

roadster541 · 28th Sep 2022, 9:15 am

I hope that you have a frequency meter with a fast refresh rate, to keep up with the drift!
More seriously, check to see if the OA2 regulator has been fitted; this does improve stability. I do like my 9R-59DS and must get its matching TX88D up and running.
I haven't fitted a crystal calibrator to the 9R59-DS, if I need to calibrate it, I use the transmitter on "net", with a digital frequency meter using a telescopic aerial.
73
Rod
M0LXY

27th Sep 2022, 11:21 pm	#1
JohnG6DFH Diode Join Date: Sep 2022 Location: Solihull, West Midlands, UK. Posts: 1	Trio 9R59DS Hi I just purchased a Trio 9r59ds and want to connect a digital frequency display,only I haven't got a clue where on the receiver to connect it to,I got the circuit diagram if someone could show me where and how to connect it thank you.

28th Sep 2022, 9:15 am	#2
roadster541 Pentode Join Date: Feb 2020 Location: Camborne, Cornwall, UK. Posts: 127	Re: Trio 9R59DS I hope that you have a frequency meter with a fast refresh rate, to keep up with the drift! More seriously, check to see if the OA2 regulator has been fitted; this does improve stability. I do like my 9R-59DS and must get its matching TX88D up and running. I haven't fitted a crystal calibrator to the 9R59-DS, if I need to calibrate it, I use the transmitter on "net", with a digital frequency meter using a telescopic aerial. 73 Rod M0LXY