Brian, Sorry, haven't got the cct for this one but they were all broad-band devices covering 70-127 kHz so should be OK for 136. Usually they needed 12v up the coax. Walter G3JKV. Would be most grate
Many thanks Walter. The aerial socket measures 5v. Were they ferrite or e-field, this one has a suspicious looking threaded spigot at the top? 73, Brian CT1DRP Sorry, haven't got the cct for this one