[ARC5] [Milsurplus] Command Receivers on the Broadcast Band

Wed Apr 16 04:00:59 EDT 2025

Mark,

Do you happen to know if the YE-ZB system remained only on WW II-vintage 
aircraft carriers till 1960, or were the post-war aircraft carriers also 
fitted with the system, especially after the Korean War?

Reportedly, in the late 1940s/early 1950s a system that merged the 
qualities of the YE-ZB and ILS was developed. It was dubbed the All 
Weather Carrier Landing System (AWCLS), and, unfortunately, was prone to 
failures. If I'm not mistaken the system operated around the AN/SPN-10 
transmitter on board the carrier.

The AWCLS was replaced in the 1960s with the ACLS built around the 
SPN-41 and SPN-42. It obviously required more items to be carried 
on-board the aircraft like the ASW-25 data link, the ARA-63 ILS 
receiver, he ASN-54 approach power compensator that controlled the 
throttle, and the APN-154 radar beacon.

By the way, why larger naval aircraft starting from pre-WW II era were 
almost universally fitted with the LF/MF ADF while the naval fighters 
weren't?

73,

Jan SP5XZG

W dniu 16.04.2025 o 02:12, MARK DORNEY via ARC5 pisze:
> The R-24/ARC-5 beacon receiver had a very short lived military career. 
> It was being replaced by the R-4/ARR-2 starting in late 1944. The R-4/ 
> ARR-2 combined the beacon receivers ( R-23 and R-24 ) with the US Navy 
> ZB Homing adapter. And the ZB homing device went out of USN service in 
> about 1960. It was replaced by VOR and TACAN.
> 
> The Navy really didn’t require a receiver using a directional loop. The 
> Transmitter used with the ZB adapter ( YE transmitter ) used a 
> directional antenna to send a different cw letter, as well as a 
> transmitter specific identifier ( again in cw ) every 30 degrees of the 
> of the 360 degree rotation of the directional transmitter antenna. The 
> pilot/navigator simply had to listen for what letter they heard on their 
> headset to know their position in relation to their landing field 
> ( normally an aircraft carrier )
> 
> The R-23/ARC-5 and R-24/ARC-5 were set up to use a loop antenna. The ARA 
> CBY-46145 and BC-946 ( SCR-274-N) were set up for a single antenna lead. 
> The R-4/ARR-2 also had a single antenna lead.
> 
> 
> Mark D.
> WW2RDO
> 
> “In matters of style, float with the current. In matters of Principle, 
> stand like a rock. “.   -   Thomas Jefferson
> 
> Sent from my iPhone
> 
> On Apr 15, 2025, at 2:10 PM, robert meadows <rpmeadow at bellsouth.net> wrote:
> 
> 
> Not really rare, just the latest iteration of the receivers, from my 
> memory of reading the US Navy manuals on the radios.  In fact, I have a 
> control for the Broadcast receiver that is the standard ARINC width.
>  From memory, the USN didn't standardize the ARC/ARA radios until early 
> 1960s.
> R
> 
> On Tuesday, April 15, 2025 at 02:03:23 PM EDT, J Mcvey via ARC5 
> <arc5 at mailman.qth.net> wrote:
> 
> 
> I never saw one of those (ARC?) broadcast receivers with the loop option.
> That's a rare beast.
> The Arc beacon receivers all had the loop option. I've seen lots of those.
> 
> On Tuesday, April 15, 2025 at 11:35:05 AM EDT, Al Klase <ark at ar88.net> 
> wrote:
> 
> 
> Gang,
> 
> Recent discussion of CBY-46145 and BC-946B bring to mind my experience 
> with R-24/ARC-5 as a BCB DX receiver.
> <2012 DX Station.jpg>
> 
> 
> Here's my log from our radio club's DX contest back in 2012:
> 
> <ARC-5 1-22-2012.png>
> 
> Sadly, YVKS  has been QRT for a while now.
> 
> 95% of the time you'll bemuch  better off with a tuned loop rather than 
> a wire antenna.
> 
> More info here: https://www.skywaves.ar88.net/homebrew/ARC-5_PS/ 
> ARC-5_PS.html <https://www.skywaves.ar88.net/homebrew/ARC-5_PS/ 
> ARC-5_PS.html>
> 
> Have fun,
> AL
> 
> 
> -- 
> Al Klase - N3FRQ
> Jersey City, NJ
> http://www.skywaves.ar88.net/ <http://www.skywaves.ar88.net/>
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> <2012 DX Station.jpg>
> <ARC-5 1-22-2012.png>
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