Modifications for the Yaesu FT-1000

19-07-1998 Some info English language
19-07-1998 FT-1000MP RX-Clarifier Check English language
19-07-1998 Out of band TX mod FT-1000 English language
22-08-1998 How is the FT-1000 MP modified to transmit in general coverage? English language
21-03-1999 QSK with FT-990 and FT-1000 English language


19-07-1998 Some info

Hello once again from Athens!

Just a quick update regarding my most recent phone conversation with Yaesu in California. Last night 17 Aug 94, I spoke with a representative of the yaesu company in California re the FT-1000. I mentioned to the rep that I'd heard over the air of a version 4 of the FT-1000 soon to be released. The rep advised that this was news to him and that the current design of the ft-1000 would not repeat would not be changed in the forseeable future.
I mentioned that my FT-1000 has a serial number begining with 2H and I was interested to know if there had been any modifications since my radio was produce.
His answer to my question was no, there had been no design modifications since my radio was manufactured. Also the 2H indicated that my radio started down the assembly line in June of 1992 - and that the design of the FT-1000 has been "stable" since that time.
The rep went on to give a plug to the new FT-900 which will appear in magazine this September. The rep described the FT-900 as being a FT-890 with a detactable head.
If this is the case - I believe kenwood's TS-50S is in big trouble - sales wise. Cheers from athens. P.S. I am interested in starting a FT-1000 users data base/packet group to share information about the radio - so drop me a line if you are a ft-1000 user and I'll add your name to my database - 73 de Lee/wy3v



19-07-1998 FT-1000MP RX-Clarifier Check

If the use of the FT-1000MP RX-Clarifier yields unexpected results (freq. jumping etc) do the following test.

  1. USB or SSB
  2. Select wide bandwidth 6 KHz
  3. Tune to an S9 steady carrier with little or no QRM
  4. Tune to a beat note of approx. 1000Hz
  5. Switch RX-Clarifier ON
  6. Turn clarifier knob counterclockwise and listen to the change of beat note. Also watch the graphical display.
  7. Turn to about -2.5 KHz then reverse the action and turn the clarifier knob clockwise. Again listen to the beat note. There must be no sudden freqency change and no forward/backward jumps on the display. Frequency should change proportionally with the movements of the clarifier knob. If there is a problem it may even be worse if you turn the clarifier knob more rapidly.

In my unit the frequency changes are not proportionally to the movement of the clarifier knob. Occasionally the frequency does even jump in the opposite direction. This is also visible on the bar display above the main frequency display. This finding was verified by other local FT-1000MP owners.

Guess I have to see my Yaesu-Dealer again.

73 / Klaus (DJ6RX)



19-07-1998 Out of band TX mod FT-1000

  1. Remove power and ant.
  2. Open case like explained in your "operating manual".
  3. Locate four screws attaching frount panel and remove the top screws. loosen the bottom screws.
  4. Tilt frount panel forward.
  5. On the left side of the radio, remove the plug from power supply to the frount panel. (gray and white wires.)
  6. Locate the jumper position 3 on control board.
  7. Change the jumper status in position 3.
  8. Reassemble radio.
  9. Reset CPU (see your OPERATING MANUAL).
73's de Phil, F1LOU @ ON7RC.BT.BEL.EU



22-08-1998 How is the FT-1000 MP modified to transmit in general coverage?

Turn the radio with the FAST and the LOCK key pressed at the same time.
then press the FAST and the ENT key to access the menu.
then go to menu 9-9 and set it to GEN then press ENT to get out. To get it back to normal repeat the steps and select 15 instead of GEN.

Turn ON the radio with fast and lock keys depressed this should enable the further menu items, note it is fast and lock use fast and enter after this to enable normal menu mode You should see further menu items 9-1 to 9-9 now



21-03-1999 QSK with FT-990 and FT-1000

Steve Ellington ( [email protected] )
Fri, 26 Jul 1996

Here is the way I do QSK with my FT-1000MP which is basically the same set up as the 990 as far as qsk is concerned.

I have an Ameritron AL-80b which has an output of up to 900 watts.

In 1974, I built an Electronic TR switch from plans in the ARRL handbook. It consists of nothing more than a 12AU7 tube, a coil,switch, variable capacitor and a simple dc power supply. There are 3 coax jacks on the back.

To connect this, you run the transceiver's main antenna input into the amplifier's antenna input as you normally would. Run the amplifiers output into and back out of the TR switch. Inside the tr switch, we simply tap off the center conductor of the coax, run this through the tube then to the 3rd coax jack on the tr switch which goes to the receiver input of your transceiver.

As you can see, there is NO switching of the RF involved here at all. No worrys of hot switching or dot clipping. The TR switch provides another stage of RF for the receiver too. Keep all leads as short as possible.

When the amplifier is turned off, simply hit the antenna switch on the transceiver to change the rx back to the main antenna input.

In the past, TR switches were known to cause TVI but with cable tv, there is little to be concerned with. It's a great system. E-mail me if you have any questions.
Steve Ellington




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