[1000mp] Using FT-1000MP MK5 with Inverter

Sun, 15 Sep 2002 12:46:58 -0700

Hi Jeff,

Yes, it does make sense. I have lived through the transitions from tube,
through hybrid to solid-state radio equipment. It was so nice to see the
inefficient voltage converters go away! When I was first licensed in 1962, I
had a British Army HF radio set which put out all of 5W CW and 1W AM. It
drew 3A on receive and 4.6A on transmit, from a 12V battery. You can read
about it on my website; go to "First Steps".

Best 73,
Adam, VA7OJ/AB4OJ
North Vancouver, BC, Canada
http://www.qsl.net/ab4oj/
Note new e-mail address:
mailto:[email protected]

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Jeffrey Steinberg
Sent: Sunday, September 15, 2002 12:36
To: [email protected]
Subject: RE: [1000mp] Using FT-1000MP MK5 with Inverter

Adam,

Yeah, I was thinking it would be better to just get a DC radio that
works off 12V nicely.  It may be cheaper in the long run;  Was hoping I
could use this nice radio for emergency ops work also.

Thanks all for the input.

--Jeffrey, K2MIT

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Adam Farson
Sent: Sunday, September 15, 2002 3:18 PM
To: [email protected]
Subject: RE: [1000mp] Using FT-1000MP MK5 with Inverter

Jeff,

I would heartily recommend that you acquire a good, used 12V HF radio
for this purpose. The radio will cost considerably less than a decent 2
kVA sine-wave inverter. (The radio's mains power consumption is
approximately 1.2 kVA; a 2 kVA inverter will provide sufficient safety
margin.)

In addition, a 12V 100W-class transceiver will draw much less current at
100W PEP output than the MkV/inverter combination. The 12V radio draws
approx. 20 to 25A on SSB voice peaks. Assuming that the MkV draws 10A at
120V AC, and the inverter is 70% efficient, the DC input power will be
1.4 X 1.2 kW = 1.68 kW. That works out at approx. 120A at 13.8V. Your
battery will not last very long at that rate!

Refer to the MkV specs http://www.yaesu.com/amateur/mvft1000tx.html for
power-consumption data.

Best 73,
Adam, VA7OJ/AB4OJ
North Vancouver, BC, Canada
http://www.qsl.net/ab4oj/
Note new e-mail address:
mailto:[email protected]

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Jeffrey Steinberg
Sent: Sunday, September 15, 2002 11:54
To: [email protected]
Subject: [1000mp] Using FT-1000MP MK5 with Inverter

I don't have a Field version, just the FT-1000 MP MK5.

I would like to use this radio off DC power for emergency operations and
I don't have a 32V source.  I do have a car battery.

I was thinking, can I use a DC to AC inverter so that I can plug the AC
cord of the FP-29 into it?  Its strange, but that would give me:

CAR Battery--->Inverter to AC--->FP-29----DC--->FT-1000MP MK5.

The question is:  How many watt inverter do I need and does it need to
be a true sine wave inverter? The manual makes no comments about the
watts the radio draws on AC.

I have e-mailed this question to Yaesu tech support in the U.S. about
two months ago and have not heard anything back.

Has anyone on this list done this?

TIA.

------------------------------------------------------------------------
------

--Jeffrey

Jeffrey Steinberg, K2MIT
37 Lawrence Road
Scarsdale, NY 10583

[email protected]