[ARC5] YG/ZB Demo

[Bob Macklin]

I just checked the cockpit photos on the F6F. There is no NAV radio. Only 
the ARC-5 and an IFF.

I was in the 49th FBW at K2AB, Taegu, Korea in 1953. We flew F-84s. The 
radio gear was ARC-3 com. ARN-6 nav, and APX-6 IFF. The ARN-6 was useless 
for flights in Korea at that time. Our pilots flew VFR and if they needed a 
DF steer they the tower at Kimpo (K-14), Suwan (K-13), or Taegu (K-2). they 
tower would instruct them to "SQUAWK 4" on the IFF. Then they would get a 
heading from the tower.

At night the runway lights and tower beacon were only turned on for a know 
inbound friendly.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Jack Antonio" <scr287 at att.net>
To: <arc5 at mailman.qth.net>
Sent: Monday, July 04, 2011 12:46 PM
Subject: Re: [ARC5] YG/ZB Demo


> On 7/4/2011 3:05 PM, Mike Morrow wrote:
>
>
>> I think it is doubtful that a demo setup where the ZB antenna is 
>> physically
>> close to the simulated YE, that one could avoid the situation described 
>> at
>> the end of the quote above, where are sectors are received.  And it is
>> essentially impossible to discriminate at the ZB and its BCB receiver on
>> the basis of signal strength, except that as the signal grows stronger,
>> more sector IDs are received.
>
>
> The AN/ARA-8 homing system was like the ZB/YG system in reverse.  In the
> AN/ARA-8 directionality was in the aircraft receive system, using an
> omnidirectional signal source.  The ZB/YG put the directionality at
> the source, with an omni aircraft receiver.
>
> When I set up AN/ARA-8 and tested it in the front yard, I was not
> getting reliable indications, I attributed this to close in reflection
> from cars in the driveway, street, the house itself. The distances from
> source to receiver were in the order of 20 feet or so.  Also, control
> of the strength of the signal source, and using double shielded coax
> to the antenna were necessary to keep stray RF at bay.  The book even
> mentions testing at distances of 50 feet or more, when using a
> signal generator as a source.
>
> I hope that Dave is not getting discouraged by these comments, it
> sounds like an interesting project to tackle.
>
> Jack Antonio WA7DIA/4
>
>
>
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