Indicator Type 248 (Part of Monitor 56) - UK Vintage Radio Repair and Restoration Discussion Forum

RadarAl · 27th Nov 2022, 6:04 pm

Does anyone know anything about the Monitor 56 system? I have an Indicator Type 248, 10QB/6325 and a Power Unit Type 675, 10KB/6295.
The Indicator is dated internally 1950 and the Power Unit 1954. The power unit is dual supply, 80V (aircraft) or 230V (ground station ?).
They are obviously ex-RAF but what aircraft were they fitted in and what system was the Monitor 56 used with? I presume a Radar or Guidance system.
More photos available.

M0FYA Andy · 28th Nov 2022, 12:08 pm

I'm struggling to find any documentation for this, but I do have the manual for for Monitor Type 101 which is described as a 're-engineered version' of the Type 56.
It's Ground Equipment, a high quality general purpose oscilloscope.

Would it be possible to have some high-resolution copies of your photos, please?

Andy

27th Nov 2022, 6:04 pm	#1
RadarAl Triode Join Date: Aug 2014 Location: Redditch, Worcestershire, UK. Posts: 41	Indicator Type 248 (Part of Monitor 56) Does anyone know anything about the Monitor 56 system? I have an Indicator Type 248, 10QB/6325 and a Power Unit Type 675, 10KB/6295. The Indicator is dated internally 1950 and the Power Unit 1954. The power unit is dual supply, 80V (aircraft) or 230V (ground station ?). They are obviously ex-RAF but what aircraft were they fitted in and what system was the Monitor 56 used with? I presume a Radar or Guidance system. More photos available. Attached Thumbnails

28th Nov 2022, 12:08 pm	#2
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,378	Re: Indicator Type 248 (Part of Monitor 56) I'm struggling to find any documentation for this, but I do have the manual for for Monitor Type 101 which is described as a 're-engineered version' of the Type 56. It's Ground Equipment, a high quality general purpose oscilloscope. Would it be possible to have some high-resolution copies of your photos, please? Andy