INFO: Helper modulation monitor MM901
 

I have acquired a Helper MM901 modulation meter. It looks and appears
to work OK. The book mentions but does not describe the necessary
accessories, specifically the coax jumper cable to connect the
unit-under-test. The book says it is of a specific length but doesn't
go on to say what that length is. I've been using a 2 ft piece of coax
and it appears to work. Anyone out there have any info? Nothing on
BAMA and company is apparently out of business. Thanks much.