Re: RF Tracking - adjusting T1, 2, 3
Yes Joel….I did it and found some improvement, but the rig I was working
on had had a hard life.
Dave….G4DAX.
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Dave smith
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#165
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RF Tracking - adjusting T1, 2, 3
Has anyone actually done this part of the FT-301 alignment? On 4.0 MHz you adjust T2 & T3 for maximum output power. Then adjust T1 for best Rx sensitivity. Problem is that all three of these in the
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Joel Weder, VE6EI
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#164
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Re: Removing FT-301 VFO mechanism ?
Hi Fred,
Thanks for your ideas. I've never even heard of friction modifiers, but hey I guess I learned something today. Sounds like I might be making a trip to Canadian Tire on the weekend. Check
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Joel Weder, VE6EI
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#163
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Re: Removing FT-301 VFO mechanism ?
Joel,I'd look at Tri-Flo, or the special mix I use...50/50 synthetic motorcycle chain lube and Park Tool synthetic bicycle grease.I've reconditioned many Yaesu and Kenwood VFO drives with this
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Fred, N8YX
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#162
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Re: Removing FT-301 VFO mechanism ?
Well darn, that shaft was NOT bent. But still several points in rotation of the shaft where it "sticks" momentarily. Perhaps some fresh grease might help? Anybody have a suggestion for a good grease
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Joel Weder, VE6EI
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#161
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Re: Removing FT-301 VFO mechanism ?
I uploaded some photos, including a couple of the shaft in question, but forgot to click the "Notify..." button. The photo folder is called "FT-301 VFO Mechanism Repair" for whoever's interested.
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Joel Weder, VE6EI
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#160
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Photo IMG_7055 Small.jpg updated
#photo-notice
The following photos have been updated in the FT-301 VFO Mechanism Repair ( /g/yaesuft301d/album?id=273638 ) album of the [email protected] group.
* IMG_7055 Small.jpg (
By
[email protected] Notification <noreply@...>
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#159
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Re: Removing FT-301 VFO mechanism ?
Hi Joel,
That sounds familiar! If you roll the shaft on a flat surface,like a glass desktop or similar,you will probably see that it’s a bit bent.?
I took a bunch of measurements and made sketches
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jon Meigs
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#158
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Re: Removing FT-301 VFO mechanism ?
I've disassembled the VFO mechanism sufficiently that I know the culprit. I just don't know what to call it, as there's no mechanical drawing in the manual, or list of VFO mechanical parts that I can
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Joel Weder, VE6EI
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#157
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Re: Removing FT-301 VFO mechanism ?
I travel for work for months at a time. Bringing projects with me saves my sanity!
Make sure to have a plastic bin handy to catch the tiny balls in the vernier as you disassemble and clean. They can
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jon Meigs
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#156
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Re: Removing FT-301 VFO mechanism ?
Hi Jon,
Well I must commend you on your determination, working on that radio in a hotel room! Lucky that you had access to a lathe. I don't know anyone who has one, but perhaps I can find a way to
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Joel Weder, VE6EI
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#155
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Re: Removing FT-301 VFO mechanism ?
I had a similar binding problem on my FT-221. It turned out the central shaft in the vernier drive was slightly bent. I convinced it back into straightness with a lathe, a maple dowel and a bit of
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jon Meigs
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#154
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Re: Removing FT-301 VFO mechanism ?
Well I decided to get brave and just try it. A step by step procedure to remove the VFO assembly from my FT-301:
- Unplug RCA connector on bottom of VFO
- Remove white tape from connector at back of
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Joel Weder, VE6EI
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#153
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Removing FT-301 VFO mechanism ?
Hi again,
I'd pretty much finished restoring my FT-301 analog rig, but have noticed that the dial has three spots in every revolution where it catches just a bit. Right around 14, 47 and 80 kHz
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Joel Weder, VE6EI
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#152
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FT-301 No Tx Output - Solved!
Hi all,
I've had an FT-301 for a couple of years, waiting for restoration. Finally got it on the bench and have been working thru the issues. I thought I'd share information about the biggest issue,
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Joel Weder, VE6EI
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#151
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Re: Low power output on 80 meters.
I rotated the band selector may times on the 80 meter position and now it is drawing 5 amps so now I am getting some output. I guess I better try to clean the contacts on the band selector.
Next is
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Robert Holsti
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#150
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Re: Low power output on 80 meters.
I would first check DRIVER output just disconnect the PWR AMP input BNCs on the back.
If driver making 5-10 watts out, then problem is PWR AMP LPF or band SW wafer switches.
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Randy W7CPA
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#149
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no output on 80 meters
I have no output on 80 meters, all other bands are ok.
Where do i start to troubleshoot this problem?? I can hear output on a external receiver.
Thanks !!
Robert KH2BR
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Robert Holsti
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#148
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Low power output on 80 meters.
I have very very low output on 80 meters. It is so low that it does not
indicate any current draw on the meter.
I can hear the signal on another receiver. I did not start troubleshooting
with the
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Robert Holsti
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#147
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Re: Yaesu Ft-301
If the vox is not working, you can verify the ic mc14011. It's a trouble
source.
PP6EW
Emerson
Em qui., 23 de dez. de 2021 às 03:29, <vorsterjanco@...> escreveu:
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emerson
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#146
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