[Boatanchors] old cavity

[Gary Schafer]

I don't know the model number but it sounds like a VHF cavity. The 
length sounds like the low end would be around 140 mhz. Should go up to 
170 or so. Also it is probably a pass band cavity.

73
Gary  K4FMX

k8omo at juno.com wrote:
>          Hi Group, hope we have some Motorola guys here.
>   I have aquired a "Motorola Precision selector cavity"
> as it says on the side of it . 2 n type connectors ,one on each side at
> the 
> top. Two knobs to adjust the rod that goes down the middle .
>   Of course this is used on receivers to "null" out a unwanted signal .
> I would like to know what freqs it will cover .
>   model   P 8390  
>  serial      1231
> size--23 "inches high  11 inches across
> core on rod  3 1/2 " diameter  16 " long
> 
> any guess????I'm thinking 130 to 175 megs VHF ???
> thanks
> Don  k8omo at juno.com
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