Well I did some shopping at my local surplus house today and found a NOS 1980's vintage N4240A TFT power head along with a nice N420C to use with my model 460B so now I have a 10 mw head to go along with the 100 mw head I had. They appear to agree with each other at 999.99 MHz so all is good.
That said, the 460B is an antique, so the prospect of finding a newer model meter to match my new N4240A head came to mind.
From what I can tell, it works with a model 475B or 476. Neither of these are showing up on e-bay at the moment. The cable has an AMP 206485-1 9 pin concentric female connector. It is a more modern connector incompatble with the jack on the 460B.
Can anyone advise what newer meters this power head will work with?
What is the lineage of the GM brand? Are there compatible Marconi or other name power meters that superseded the Marconi?
RFI-EMI-GUY