Hi Wendell, can answer the questions about the filters as I just
installed mine per the location and pictures in the manual. They seem
to work fine. Someone on the reflector had mentioned a full scale meter
blip on the main RX when selecting the 500hz filter. I was able to
recreate this but also found it only happens with the AGC in the fact
position (or auto if the mode selected caused the AGC to be in fast).
So I don't think the filter position is the culprit but the glitch is
there.
On the SB 220 all you need do is use the relay control jack on the MP
and flip the switch as you mentioned. I had to use my SB220 during the
ARRL CW test as my 87A needed a check up. The 220 worked fine with the
MP.
73 Nate
N7OS
>----------
>From: Wendell - W5FL[SMTP:w5fl@flash.net]
>Sent: Wednesday, February 26, 1997 4:43 PM
>To: 'yaesu@contesting.com'
>Subject: [Yaesu] FT1000MP Filter Orientation
>
>I just received my FT1000MP from HRO in San Diego and it was received by them
>one day before shipping to me. The S/N is 6H120030. Sounds like a date of
>manufacturing of Aug 1996. Is that correct?
>
>Started to install the two 250 hz filters and the two 500 hz collins filters
>and discovered that they will go either way. The factory installed 2.4 khz
>collins filter is upside down to the illustration in the book, but is
>oriented the same as the silk screen on the board. The writing can be read
>upside down from the bottom-rear of the unit.
>
>I looked at the circuitry on the collins boards and they are NOT symetrical
>(but orientation may not matter). I would appreciate any input on the proper
>orientation of these filters.
>
>Also need to interface to old Heathkit SB-220 and manual is still packed away
>somewhere from move. Does it require any more than just running ALC and
>Relay Control Line and setting switch on back of FT1000MP to Linear ON
>position. I believe the Relay control line is the return side of a 115 VAC
>relay and sure don't want to damage the MP.
>
>
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