[1000mp] FT-1000MP Typical Maximum Power?

Fri, 28 Dec 2001 22:10:28 +0100

Hello Jeff,

I think that the previous owner made an alignment of VR3003 (Overcurrent
ALC, Maximum RF Power Output) and VR3002 (50 Watt & 10 Watt Output) on the
AF-unit. You must be very careful with this!! You may tune the PA for a
maximum of 150 Watt output, but your RF components will not last very long
then...

In the Technical Supplement of the MP, Yaesu advices the following
alignments:

MAXIMUM RF POWER OUTPUT:
Preset the RF PWR control fully clockwise, and tune the transceiver to
14.2000 MHz. Select CW mode, the key the transmitter and adjust VR3003 for
100 Watts on the meter.

50 W AND 10W RF POWER OUTPUT:
Move switch S3002 from "100W" to the "50W" position. Connect the in-line
wattmeter and 50-Ohm dummy load to the antenna jack, select CW mode and tune
to 14.2000 MHz.

Set the RF PWR control fully clockwise. Key the transmitter, and adjust
VR3007 for 50W on the power meter. Recall menu function 4-0, and select
"10W".

Key the transmitter, and adjust VR3006 for 10W on the power meter. After
adjustment, recall menu function 4-0, then select "100W". Move switch S3002
back to the "100W" position.

TX DRIVE CONTROL:
Set the RF PWR control fully counter-clockwise, and select CW mode. Key the
transmitter, and adjust VR3013 for one segment desplayed on the PO meter.

I hope this information will help the PA of your MP to live longer.

Good luck and Kind Regards,
Hans Remeeus PA1HR.

e-mail: [email protected]
site: www.remeeus.nl
Ham Radio call: PA1HR
Tel.: +31 172 586600
Fax: +31 172 587013

----- Original Message -----
From: "Jeff Maass" <[email protected]>
To: <[email protected]>
Sent: Friday, December 28, 2001 3:46 AM
Subject: [1000mp] FT-1000MP Typical Maximum Power?

>
> I just swapped in a second FT-1000MP (98-era) that I purchased
> used a few months ago, but which I have never used until now. I
> discovered that it showed 147 watts output on 160 meters, where
> my other (97-era) 'MP maxed out just above the rated 100W!
>
> With menu item 4-0 set to '100' watts, the max output is 147 watts.
> With menu item 4-0 set to '50' watts, the max output is 80 watts.
> With menu item 4-0 set to '10' watts, the max output is 14 watts.
>
> 1) Is there a known problem that this is a symptom of?
>
> 2) Is there a user adjustment that the previous owner might have
>      made to juice the output? (He's out of town, and I'll check with
>      him later).
>
> My amplifier requires only 50 watts to make legal-limit output, and
> I normally operate my primary 'MP with 4-0 set to '50', so throttling
> back the drive will be natural for me. I'd still like to determine
> whether there is a problem building to a failure!
>
> 73,
>  Jeff Maass       [email protected]     Located near Columbus Ohio
>          USPSA # L-1192       NROI/CRO    Amateur Radio K8ND
>     Maass' IPSC Resources Page:  http://home.columbus.rr.com/jmaass
> Circleville USPSA/IPSC: http://home.columbus.rr.com/jmaass/pcsiipsc.htm
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