John correctly points out that LP111 typing unit is for the model 28 compact only (UGC-20, UGC-25, etc.). It WILL NOT WORK on a non-compact because the mainshaft driven gear is in a different location. 

Teletype, the company with a million options…

Nick England K4NYW
Chapel Hill NC
www.navy-radio.com

On Wed, Jun 17, 2026 at 11:45 PM John, W9DDD <w9ddd@tapr.org> wrote:
Isn't that LP111 the model used in the UGC20?


On 6/17/2026 3:09 PM, Nick England via GreenKeys wrote:
> 28KSR compact (AN/UGC-20)
> https://www.govplanet.com/for-sale/Shop%2C-Warehouse-and-Consumer-ANUGC20-Teletypewriter-Set-Pennsylvania/15321727
>
> 28 typing unit
> https://www.govplanet.com/for-sale/Parts-(2)-Telemechanics-LP111WY%2FAJG-Teletype-Unit-Pennsylvania/15340145
>
> I know nothing more....
> Nick England K4NYW
> Chapel Hill NC
> www.navy-radio.com
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The above comments or recommendations are SWAG. Use at your own risk.

John, W9DDD