[ICOM] two items... D104 and Marine Mobile

[JerryM]

1. Re the marine mobile situation, for US hams, once you are outside the three mile limit, the FCC no longer has jurisdiction. Don't do it inside that limit, though. 

Thinking here for just a minute... a modified maritime rig would probably lose it's US type acceptance for MM work but could be used with-in the hambands by licensed amateurs with no problem within FCC jurisdiction. The same applys to Ham rigs. Ok in the ham bands but not in the maritime bands inside the three mile limits. I would guess that British laws are similar? 


2. Running a D104 on a 745 (or a 730 or a 735, and any of the other Icoms that need a pre-amped mic.)

The un-amplified D-104 makes an excellent direct feed mic for these rigs with it's higher impendence crystal element. For the rigs (K and Y and some Icoms) that do not have their first audio stage in the mics the D-104 is a bad idea unless you using a blocking resistor to damp down the drive, and no, I don't remember the proper value anymore. But I have a mint un-amped D-104 that is wired for and runs just great on my 730 and 735.