Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Like the title says need info on the two systems mentioned.

AN/APS-4 and AN/APS-6

Anything you got would be appreciated. The more detail the better.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Here's some photos of the AN/APS-4
http://cybermodeler.com/aircraft/sb2c/sb2c.shtml

Scroll down to the bottom.

And some info as fitted to the P-38 M.

http://p-38online.com/p38m.html


Ed

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Thanks for trying Ed. Had all that.

Perhaps I should mention that this set was also used by the British as the AI MK XV in the Mosquito.

Info needed now is the following.

What did the control box for the set look like? Including the labels on the knobs.

Pictures or diagrams of the scope when operating, as well as when an interception is taking place.

Speed of scanner movement. Elevation, and azimuth limits that scanner head could reach, the speed that the parabolic dish traversed within these limits.

Effective range that the equipment could detect a
single engined plane, twin engined plane, 4 engined plane, ship, land mass.

Details are what I need.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

For details, try here:


http://www.radarpages.co.uk/links/links.htm



Ed

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

You can find a pretty good description (with illustrations) of the AI Mk.XV/AN/APS 4 on pp132, 133, 134 in Martin Streetly's 'The Aircraft of 100 Group'. Publ. Robert Hale, London, 1984. ISBN 0 7090 1043 5.
(much of this information was serialised in the UK magazine 'Scale Models'.

Now, AFAIR, it is long out of print but not too difficult to find through on-line resources.

Some of the information given by Streetly on the XV:

Single CRT display for operator
Scanner 14 inch diameter
Two modes of operation; search & intercept
Wavelength 3 cm with a frequency of 10 GHz
Max range 3.75 miles (experienced operator)
Minimum range 600 feet (experienced operator)

IMO 600 feet is pretty close but that is what's given in the book.

HTH

Dave

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Thanks Ed and Dave. I really appreciate the effort.

Ed, I am familiar with the site. If I'm not mistaken, and even on its title page..

http://www.radarpages.co.uk/links/links.htm

deals with Air Defence Radar, not Airborne Intercept Radar, so as interesting and truly valuable as it is, it has not much on the set I am looking for info on. There are some Airborne sets (H2S Gee Oboe etc) But these are bombing/Navigation systems.

Dave, Thanks I have the Streetly book. It is excellent. However, the information it presents on this set is conflucting with other information I have.

For example.

It is said that the AN/APS-4 equipment had two radar scopes to present the information to the operator. And that the AN/APS-6 system had a simplified display that made it possible to fit it to single seater planes. (like Hellcat, Corsair) The work load was reduced, making is suitable for such an installation. See the following page as well as others.

http://www.strategypage.com/messageb...es/6-20242.asp

If that is the case, then it must have been then AN/APS-6 (or another unidentified variation) that was installed in the Mosquitos.

This is also confirmed in the 2 volume set Radar in World War 2 by Guerlac. The AN/APS-4 was mounted in a pod. It was put on Avengers, and some others but because it was pod mounted, it theoretically could be fitted to ANYTHING, that had a second crewman to operate.it. It also had a fairly capable ASV or anti-shipping capability as well.

Waldo.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Which is to be expected since that is what it was originally designed for.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

I don't have the Streely book to hand at the moments but, IIRC, wasn't the diagram in the book described as a tentative view of the installation with a Monica CRT fitted next to that for the XV?

Dave

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Boy, Dave, you have a memory like a steel trap. Yes, the Monica indicator is to the left of the AI XV indicator. And, the 'control' box for the Monica is below the control box for the AI XV. It's shown on page 133 of the book.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Exactly.


Not quite, the picture you are remembering is the install of the Mk 10 set. For the Mk XV set there is a diagram showing it in pod form (ala USN installation) and mentions that this installation is NOT how it would have been installed in the Mossie. Page 178.

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Not in my page 133. My page 133 has a hand drawn map titled Coastal Radar Installations 1942. My copy is printed 1978 and is the first printing. My pages pp132, 133, 134 are not as you describe. What printing is yours?

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Thanks for picking me up on that because it's an easy way for people to get confused about things. It was printed in 1984.
OK, I see the problem. I was talking about "The aircraft of 100 Group" which was first printed in 1984. You were speaking of "Confound and Destroy" of which I also have the printing of 1978.

All the best,
George

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Beauty!

However, I would say that it was you that picked up on that rather than me!

I shall have to track that book down. I may have a few tidbits of information in it that I need.

Thanks George!

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

WP, You wrote:

"Not quite, the picture you are remembering is the install of the Mk 10 set."

No, I was referring to the illustration (as noted by George and described by the author as tentative) that appears on p.133 with the lower illustration showing how the scanner unit package was installed in the nose of those Mossies so equipped e.g. 23 & 141 Sqns.

IMO, with the a/c of these two squadrons also equipped with Gee, the author's tentative view is a logical one because with the Gee display mounted in its usual position (behind the pilot's seat), there would be precious little space elsewhere to fit the Monica display where it could be readily monitored. If you've ever had the opportunity to sit in a Mosquito cockpit you'll know exactly what I mean :) .

Again and IMO, while it is interesting to speculate on the cockpit installation of this particular system based on published information, it is likely that the only definitive information would be that provided by the relevant Air Publications if indeed they still exist.

Dave

Re: Radar Informationed needed...AN/APS-4 and AN/APS-6
 

Hi

Just wanted to say that "A history of 8 group" by Gordon Musgrove has a few pictures of oboe and H2S installetions, dont know if it helps.

Cheers Nick