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

[David J. Ring, Jr.]

#1 is incorrect.  The F.C.C. has jurdisction on ALL USA flagged vessels no
matter where they are in the world.  They operate under a USA license.  You
can be in the middle of the Arctic Ocean, and USA laws, and FCC have to be
obeyed.

Mort, KB6BSN is correct in stating that a ham transmitter/transceiver would
be illegal to operate on the marine frequencies - it isn't type approved for
that service - and ALL HF radios must be type approved under Part 80 of FCC
rules and regulations.  He is also correct that a ham radio could be used
(any radio could be used) in a distress.

However, modifying a marine radio certified under part 80 would for use in
the ham bands would also be illegal because Part 80 states that except for
antenna and power supply, the marine HF radio and any amateur radio must be
in a separate unit.

In other words, if you legally want to operate on the ham bands AND marine
bands you MUST have two radio transmitters - one for ham, and one for marine
bands.

I can cite the applicable FCC rules and regulations (a long cite) off list
if anyone is interested.

73

David J. Ring, Jr., N1EA
Radio Officer, U.S. Merchant Marine



----- Original Message ----- 
From: "JerryM" <jmangas at fast.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Saturday, August 14, 2004 5:39 PM
Subject: [ICOM] two items... D104 and Marine Mobile


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.
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