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  #11  
Old 02-26-2019, 12:03 PM
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John ED Renstrom John ED Renstrom is offline
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my only take is that the aftermarket builder did not put in a radio unless requested.then is would be what ever was requested and farmed out to a licensed installer. they would normally be installed after delivery to cover what ever needs the new owners had. normally removed when passed on. to put in the new rig. mounts were with elongated holes for universal application. but marks might be useful as all were a little different. the base loading coil would be the range of the radio with the whip trimmed to the exact frequency of the radio. at a 1/4 wave length. vary few commercial radios had mutable Chanel. most used only the one licensed. hence the number of them installed and the number of holes in the roof. most low bands used whips at around 100 inches. the stoner would most likely have only one ground plain cast in the roof. so a lot of cab mounts on mutable radios in the higher bands.
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Old 02-26-2019, 05:06 PM
Walter Suiter Walter Suiter is offline
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Looks like the longer whip was cut to 123.200 and 123.275 which MD used at Edwards.
http://cascanning.tripod.com/califor...y/edwards.html
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Old 02-28-2019, 03:00 PM
Nicholas Studer Nicholas Studer is offline
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Quote:
Originally Posted by Walter Suiter View Post
All right, fess up right now, how did you get the picture of my 211.
That spring setup must have launched a few handlights.

You tell the truth and I'll look around for the clamp on I have stashed someplace. From memory clamp ons fit the fat battery that was almost a cube. Clamp on being different from the post mount Ray-O-Vac produced millions of in a similar size to Big Beam 211.

Re the long antenna, measurement needs to be of just the whip. I did some chart reading and 21" of whip puts the radio around 120mhz which is oddly the low end of AM aircraft frequencies.
That photo of that ad was on eBay maybe a year or so ago.

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Originally Posted by Walter Suiter View Post
Looks like the longer whip was cut to 123.200 and 123.275 which MD used at Edwards.
http://cascanning.tripod.com/califor...y/edwards.html
Great info! Very likely what it was.
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