That radio may have provided happiness or pleasure for you but I will stand by my original comments, poor or no high level injection on the first mixer, tuning too touchy and a mechanical monster!  That is why radios like the ARC-1 and 4 served decades beyond WW2 with later designs like the ARC-3 serving well into the seventies but the SCR-522 was dumped in mass at the end of WW2

Think if your doing a WW2 ETO B-17 the SCR-522 has to be included, but a B-24 used in the North African theater or a B-29 in the Pacific theater would have the newer sets and not that first generation radio.

But, that’s what I think.

Ray F/KA3EKH

Subject: Re: [Milsurplus] [ARC5] SCR-522 Playing.

In my opinion, the SCR-522 design was highly utilitaristic to fit its mission.

It was simple to put together, easy to maintain, fairly reliable, cost effective and easy to use.  I believe that the SCR-522 perfectly fit its initial application (single pilot fighter).  

Its good performance made the SCR-522 a stable cornerstone for aero VHF communication.  From an ham point of view, its crystal control and rudimentary tuning made it a unusual set to work with. I played with them in the early 70s, and in a moment of nostalgia, I did acquire a brand new 522 a few years ago.

Best, Francesco K5URG

From: [email protected] <[email protected]> On Behalf Of kgordon2006
Sent: Tuesday, April 22, 2025 9:56 AM
To: David Stinson <[email protected]>; ARC-5 <[email protected]>; [email protected]; MMRCG <[email protected]>
Subject: Re: [ARC5] [Milsurplus] SCR-522 Playing.

Well, IMHO, it is a typically British design: not particularly ergonomically arranged and too spread out.

It is just plain ugly.

However, as you say, it was very important.

The ARC-3 and its later developments were better rigs, but, again, IMHO, the 522 started the process.

Ken W7EKB