[MRCA] AT-1011 Tilt adapter questions/trade ?

[JEFF CICCONE]

Mark. I think you have the upper section of the shakespeare 4289 spring base.  that fine thread would probably also fit on the AB1372 aka 4244 or the 4246.  it appears those 3  have a short solid rod that adapts the coarse threads of the at1043 to a fine thread on those bases.  Jeff N2IA

>     On 10/24/2020 12:50 PM MilComm Guy <m38inmaine at gmail.com> wrote:
> 
> 
>     I purchased a large lot of AT-1011 masts, bases adapters and various other aluminum masts and have this tilt adapter that is smaller than what I call the standard adapter, it also has a different thread on the bottom female thread end.  My questions are 1 what application or base is this used with ?, 2 does anyone need this and have a standard tilt adapter they would trade for ? and 3 does anyone know the specs for the acme(?) thread on the AT-1011 standard base so I could perhaps have a shop make an adapter to be able to use this tilt adapter ?
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>     Thanks
>     Mark
>     K1HF
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