[Hallicrafters] Information help please

[wf2u at ws19ops.com]

Ted,

Since the equipment you mentioned is vintage Coast Guard equipment, it  
won't have any military designation. The Coast Guard used to have  
their own contracts and didn't use the standard military (Navy)  
nomenclature. They didn't use standard Navy equipment, either. Most  
likely the equipment was either a Coast Guard special contract or  
civilian (Merchant Marine type) gear, although Hallicrafters was not a  
"big" name in maritime equipment, except for a few low power  
transmitter/receivers made for small vessels, and during WW2 some of  
these were adopted by the Signal Corps (a typical example is the  
BC-669).

So TB-142 must have been the Coast Guard nomenclature for the VLF  
transmitters you mentioned.

If they cover the 500 KHz band, maybe it's worth to wait before  
modifying them, because hams may get the 500 KHz band in a few years.  
There is some experimental licensed ham activity on that band in the  
US and some other countries.

The RAO series Navy receivers were not used for communications per se,  
in conjunction with a transmitter, but they were intended as  
monitoring and communications intercept receivers.

73, Meir WF2U
Landrum, SC


Quoting TJRachwal <tjrachwal at comcast.net>:

> Greetings,
> 	The Lightship "Huron" has two Hallicrafters TB-142 transmitters (VLF)
> used for beacons.  The USCG cut a bunch of wires when the ship was
> given over as a "museum" to the city of Port Huron (Michigan).  We
> think the units can be restored and brought on line to 160m but we have
> no manuals or info on the units.
> 	I "Googled" both "Hallicrafters TB-142" and "TB-142" with no luck.
> The units were made in 1949 and must have some other military
> designation.  Anyone know information on this unit or where it might be
> found?  Any help at all would be greatly appreciated.  A National
> NC-120 (RAO-2) has been restored and we're hoping to bring the old gals
> TB-142 transmitters back to life.
>
> Thank,
>
> Ted K8AQM
>
>
> ______________________________________________________________