Re: FT301D schematics
My manual did have an obvious mistake in the alignment instructions, but in truth I think it was a typo. D. wrote:
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Dave smith
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#298
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Re: Calibration off by 2.5 khz. need help.
I¡¯ve had the same issues with the USB and LSB xtals had to change caps to get them back inline. Any one know of a xtal manufacturer that can makes these HC49U. Back in the day I used Jan crystal.
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Michael K.
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#297
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FT301D schematics
Hi All, Has anyone seen manuals that change the calibration procedure based on new versions of boards installed? Do all manuals have the same calibration instructions. I have older 301Ds with
By
Michael K.
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#296
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Re: FT 301 lid fixings.
This company (Elcon) also sells a complete replacement kit for the FT-301D display in case anyone is interested. 73, Bob, K5INW
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Bob Isselhard <robertisselhard@...>
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#294
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Re: FT 301 lid fixings.
Thank you Roland, I will follow that up. All the seasons best. Dave¡.G4DAX.
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Dave smith
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#293
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Re: FT 301 lid fixings.
You can get them here. https://shop.elcon.ch/yaesu/schnappverschlussniete-zu-ft-301.htm
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Roland HB9GAA
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#292
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FT 301 lid fixings.
Good morning....does anyone know what the plastic rivit like fixings for the lid of the 301 are called> I kneed to have 4 replacements for my rig here in the UK. Seasons compliments to By Dave smith (
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Dave smith
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#291
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Re: Help please. RL1 , T/R relay energizes when attaching 100 watt amp.
I will put my notes here for trouble shooting. J10 good radio.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? bad radio. pin 3-4? ?7.6 k? ohms? ? ? ? ? ? ? ? ? ? ? ? ?103 ohms pin 4 to
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Robert Holsti
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#290
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Help please. RL1 , T/R relay energizes when attaching 100 watt amp.
Amp connector pin 4 (tx13.5) goes high to 13.5 volts when attaching a known good amp. Pin 4 on bad radio measures 45 ohms to ground and on the good radio, it measures 7k ohms to ground. there is no
By
Robert Holsti
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#289
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Edited
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Need 301 knob
Need one front panel knob such as used on the band switch and others KL7AM
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KL7AM
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#288
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Re: VFO Issues-solved
Removing and reseating plug in boards and a de-oxit treatment of switches and controls has cured the issue!Next thing is checking why output power is a little low. I am showing about 85 watts cw on
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KL7AM
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#287
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Re: VFO Issues
I would look closely at the VFO/EXT function switch and wiring for continuity.
By
Gene N4FZ
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#285
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Re: Calibration off by 2.5 khz. need help.
Well, I have all the crystals on frequency and still have a counter calibration error. It is less, like 1.7 khz with the pot turned all the way to the left. the marker frequency is spot on. that
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Robert Holsti
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#284
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VFO Issues
I have a 301D with the outboard VFO and neither vfo seems to function, I haven't found a schematic that shows how the external vfo output is switched into the radio. Is anybody familiar with vfo
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KL7AM
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#283
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Re: Calibration off by 2.5 khz. need help.
If it¡¯s any help, I recall having to change a trimmer capacitor to a series cap. instead of parallel to pull a crystal which had aged out of limits. Extra parallel capacity will pull it down, series
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Dave smith
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#282
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FT-301 manual
http://www.iw2nmx.it/Yaesu/FT-301/FT-301%20Instruction%20and%20Service%20Manual.pdf
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Gene N4FZ
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#281
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Re: Calibration off by 2.5 khz. need help.
You are correct !!? 40 meter crystal is 4 khz off and cant get it any closer to 21.5 mhz
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Robert Holsti
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#280
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Re: Calibration off by 2.5 khz. need help.
It looks to me as there are trimmer caps for the band crystals?
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KL7AM
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#279
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Re: Calibration off by 2.5 khz. need help.
schematic shows calibration pot as 5 k. It measures 4.88k. ..? resistor R14 to ground? schematic shows 1k, I see? marked 820 ohms and measure 798 ohms .. resistor on top side of pot? R15 schematic
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Robert Holsti
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#278
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Re: Calibration off by 2.5 khz. need help.
On the front of the radio there is an adjustment pot and it is maxed out all the way to the left. That pot works. I don't know of any adjustment for that inside of the radio.
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Robert Holsti
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#277
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