This listing is for a vintage Capacitive Probe Stoddart Aircraft Radio 91183-2 NM-40A w/Mounting & Extension.
This antenna was designed to be used with the Stoddart NM/40A (AN/URM-41) Field Intensity Meter, which was used to detect ELF and VLF interference and/or intensity and was used by the US Atomic Energy Commission.
The pivot on the mount is loose, but we think it would clamp easily when the mount is attached to something.
If you want just the probe, let us know as shipping would be less expensive.
We have two of these at the start of this listing.
Price is per probe, with mount and extension.
Picture is of one of them - both are in similar condition, but the second one does not have the USAEC label.
Excellent previously used condition.
We typically ship within one business day! International buyers are responsible for any customs/duty fees.
Most of the parts we sell are vintage New Old Stock parts.
We use high quality shipping supplies and biodegradable peanuts to make sure your parts arrive safely.
NOS (New Old Stock) parts are Genuine Factory Original parts.
NORS (New Old Replacement Stock) parts are original vintage aftermarket parts.
NOS and NORS does not necessarily mean the parts are perfect.
Manufacturing technology was not the same as it is today so imperfections should be expected.
Also, these parts may have been in storage for 40-80 years and could be dusty, greasy or have surface rust, spider webs, etc.