What was Indicator Type 304 used in - UK Vintage Radio Repair and Restoration Discussion Forum

NickG0HIK · 16th Sep 2016, 2:35 pm

I have this indicator in my collection and cannot find any references as to it's use.
It was modified sometime during it's service life as the type number on the nameplate has been erased.

The original Ref No. is 10QB/60, but the replacement plate says Type 304 ref 10QB/6499
Modified from Indicator type 42 Mod RMC531/1

The tube it's self does not have any markings but is 2 1/2" across.

Thanks

Nick

GMB · 16th Sep 2016, 2:44 pm

AI Mk9
You need AP2892D/E for details.

NickG0HIK · 16th Sep 2016, 3:36 pm

Thanks GMB,

Not something that I currently collect, but it can sit in the loft awhile.

Nick

NickG0HIK · 17th Sep 2016, 7:00 am

What an interesting story, Downing was killed by friendly fire while testing the effects of Chaff on the Mk. IX.
It also had a Heads up display.

I'll have to learn more about the developments of radar.

I can't find the Air Publication that you mention though.

M0FYA Andy · 17th Sep 2016, 10:25 am

Nick,
It looks like the Indicator Type 42 was developed for AI MkV, as an improvement to AI MkIV, and then used in MkIX as GMB says, where it became Type 304. The National Archives at Kew hold a copy of A.P.2892E, but it won't be cheap to request a copy of it!

Expect a PM from me.

Andy

16th Sep 2016, 2:35 pm	#1
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	What was Indicator Type 304 used in I have this indicator in my collection and cannot find any references as to it's use. It was modified sometime during it's service life as the type number on the nameplate has been erased. The original Ref No. is 10QB/60, but the replacement plate says Type 304 ref 10QB/6499 Modified from Indicator type 42 Mod RMC531/1 The tube it's self does not have any markings but is 2 1/2" across. Thanks Nick Attached Thumbnails

16th Sep 2016, 2:44 pm	#2
GMB Dekatron Join Date: Aug 2003 Location: near Reading (and sometimes Torquay) Posts: 3,094	Re: What was Indicator Type 304 used in AI Mk9 You need AP2892D/E for details.

16th Sep 2016, 3:36 pm	#3
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	Re: What was Indicator Type 304 used in Thanks GMB, Not something that I currently collect, but it can sit in the loft awhile. Nick

17th Sep 2016, 7:00 am	#4
NickG0HIK Hexode Join Date: Jul 2010 Location: Ireleth-in-Furness, Cumbria, UK. Posts: 286	Re: What was Indicator Type 304 used in What an interesting story, Downing was killed by friendly fire while testing the effects of Chaff on the Mk. IX. It also had a Heads up display. I'll have to learn more about the developments of radar. I can't find the Air Publication that you mention though.

17th Sep 2016, 10:25 am	#5
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,511	Re: What was Indicator Type 304 used in Nick, It looks like the Indicator Type 42 was developed for AI MkV, as an improvement to AI MkIV, and then used in MkIX as GMB says, where it became Type 304. The National Archives at Kew hold a copy of A.P.2892E, but it won't be cheap to request a copy of it! Expect a PM from me. Andy