[Yaesu] FT 1000D Power Adjustment

Thu, 13 Feb 2003 01:37:17 -0800

Members:
I send the following proceedure in the event anyone needs them & per noted
posts for maximum power.

Maximum Power Output interacts with Overcurrent ALC adjustments. Transceiver
is tuned to 7 MHz. VR3012 adjusted for 250 Watts on Wattmeter into 50 Ohm
load. This adjustment also includes SWR Turndown alignment (VR3016, 3015)
Note VR3017 requires alignment in low power models only.

Output setting: Trancceiver set @ 10.499 MHz.
key transmitter Adjust VR 3016 for 210 +/- 10 Watts on Wattmeter.

PO calibration:
Tune unit to 14.2 MHz. CW Mode Set meter to PO position. Key Tx, Adjust
VR3014 so PO meter indicator matches wattmeter with 200 Watts output.

SWR Turn down:
Connect inline Wattmeter and a 16.6 Ohm dummy load (or three 50 Ohm loads in
parallel) to Main Ant jack. Set Drive & RF Power controls fully CW
(Maximum). Set tranceiver to 14 MHz. CW mode. Key Tx. Adjust VR3015 for 100
+/- 5 Watts on Wattmeter.
73, Ron, W2WU, B.E.

----- Original Message -----
From: "Fern Rivard" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Wednesday, February 12, 2003 21:44
Subject: Re: [Yaesu] comments on buying a used HF rig

><Snip>why would anyone want to push the >FT1000 beyond 200 Watts, when this
increase in >power output won't be
> noticeable on the air  but it sure will be a lot hard on the rigs
> components.  73 from Fern VE7GZ
>
>
> -----Original Message-----
> From: [email protected] <[email protected]>
> To: [email protected] <[email protected]>
> Date: Wednesday, February 12, 2003 1:41 PM
> Subject: Re: [Yaesu] comments on buying a used HF rig
><Snip> It's not a good mod to do.  Yes, you get more power, but you
> also
> >> increase the strain on the transistors and shorten their lifetime.  And
> in
> >> addition, you also probably are no longer making the transmit IMD
> >> specification.