https://www.testmart.com/estore/unit.cfm/TBD/TEMPO/55505301/test_it_medical_lab_equipment/128.html
55505301 - TEMPO Communications TEST SET ADAPTOR XL 7/8-28, POF ST
55505301 - TEMPO Communications TEST SET ADAPTOR XL 7/8-28, POF ST Product Category: To Be Determined Detailed product specification, manufacturer data sheets,...
communications test set
https://auctions.ramco.uk/past-auctions/ramco-11453/lot-details/9e75333d-5f6c-418b-a5cb-b3840091f9d7
Marconi Instruments Model 2965 radio communications test set - 100 kHz - 1 GHz
communications test set