[Milsurplus] [armyradios] OT Single wire landline telegraph

[J. Forster]

They sound similar to the TG-5, -5A & -5B. The should work with a twi9sted
pair, although they may overload.

I suspect the tube might replace the local hummer in the TG-5s.

Posting a photo of the things and of a print would help a lot.

-John

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>
> Greetings Groups,
>  I have recently aquired two Chineese military telegraph sets. From the
> data plate inside the cover they are "63******".  *= chineese character.
> Included were headsets and keys.  The manual is in Chineese but the
> schematic is conventional and the accessories include a ground stake and
> connecting cable, and the units have one binding post for connection to
> another devece or network. The main switch seems to be "OFF,SEND,
> RECEIVE" (or rx,tx).
>  I am aware of single wire systems but I really know nothing about them.
>  A system useing the "earth" would imply that there must be some impedance
> in the ground return. I am guessing here.
>  Can these one wire sets be operated as 2 wire sets by connecting gound to
> ground?
>  The sets have one tube, a 1K2; I don't know if that is stricktly a
> Chineese tube or if it has equivelents on the common marketplace.
>  Any info is wellcome. I will try to coax some of my co-workers to do some
> translation for me but they are somewhat reluctant when dealing with
> anything related to what they escaped from.
>
> Jay KE6PPF
>