11-pound transponder, only $19,000

My 135 King Air BE-A90 had one of those........plus one of these:
s-l225.jpg

Dual transponders in 1967!
 
Note: these require a separate control head on top of the remote units.
 
In 1971 the code "7500" didn't mean what it does today ... but this is still funny. $399 in 1971, by the way, would be about $2,470 today.

(I have a vague recollection that in the early days '3100' was the hijack code. Anybody remember?)

Genave_Beta500.jpg
 
Last edited:
I had a early narco, not sure of the age, but it was serviced in 71. It was about the size as the one above and then had a normal looking control head. I gained several #s of useful load when it crapped out and I had a garmin 327 installed.

The guys at Sarasota Avionics had never seen one like it.
 
I had a early narco, not sure of the age, but it was serviced in 71. It was about the size as the one above and then had a normal looking control head. I gained several #s of useful load when it crapped out and I had a garmin 327 installed.

The guys at Sarasota Avionics had never seen one like it.
Possibly a UAT-1? That was the only transponder Narco sold in 1968. 7.6 pounds, $1,975 -- roughly $14,000 in today's money.

download.jpg
 
It looked something like that, but I was thinking AT-5. Next time I’m at the hangar I’ll take a look. I never tossed it out.

There was definatly a sticker on it that said it was seviced in 71, I remember that much.
 
I looked it up, AT-5A. I replaced it in 2016. I gained 3.4lbs useful.
 

Attachments

  • 038A4F43-20EC-454A-97D8-3A238C2D12FD.jpeg
    038A4F43-20EC-454A-97D8-3A238C2D12FD.jpeg
    197.1 KB · Views: 29
What did a transponder even get you in 1965? Mode C rings didn't appear until 1988-ish...
 
Funny how many avionics manufacturers were around back in those days.
 
Back
Top