Re: WTB: Power Connector in good connection
Hi
Look for Molex 38331-8012
This is the connector which fits the FT-301D.
73
Roland
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My schematic shows 33pf. The parts list shows 39pf. Looks like it is across the 20pf. Trimmer cap for the 8999.3khz crystal.?
Fred N1DEC?
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On Aug 10, 2023, at 7:34 AM, Gene N4FZ <felsummers@...> wrote:
? The IF board schematic shows C428 present next to the CW Oscillator crystal and trimmer. Schematic shows a 39pF, but the cap I removed had 33K stamped on it.? On Aug 9, 2023 at 9:07 PM, < emerson> wrote: I do not found C428 at IF board.? The C428 is 39p.
Emerson
Em qui., 29 de jun. de 2023 ¨¤s 17:21, Forest (Gene) Summers < felsummers@...> escreveu: I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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The IF board schematic shows C428 present next to the CW Oscillator crystal and trimmer. Schematic shows a 39pF, but the cap I removed had 33K stamped on it.?
On Aug 9, 2023 at 9:07 PM, < emerson> wrote: I do not found C428 at IF board.? The C428 is 39p.
Emerson
Em qui., 29 de jun. de 2023 ¨¤s 17:21, Forest (Gene) Summers < felsummers@...> escreveu: I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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Hi Dave
I hit the LSB crystal with a little bit of cold spray.
LSB came right on!
Then I touched up the soldering in the area and cleaned the board (it looked fine though).
So far its been working great. LSB and CW are back !
Thanks for your help!
Fred
N1DEC
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I do not found C428 at IF board.? The C428 is 39p.
Emerson
Em qui., 29 de jun. de 2023 ¨¤s 17:21, Forest (Gene) Summers < felsummers@...> escreveu:
I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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i have exact same problem. LOW PWR
On Thursday, June 29, 2023 at 04:21:49 PM EDT, Forest (Gene) Summers <felsummers@...> wrote:
I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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Re: WTB: Power Connector in good connection
Hey Mike,
Ebay would be your fasted bet. Buy the FP301 power supply w/speaker for $99 or the cable for $65.
Michael
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Re: WTB: Power Connector in good connection
Hello Mike,
I also purchased a? 301 without the cable (or power supply) in the past.
There used to be a guy on qth.com who sold power cables for various vintage (and not so vintage) radios. I haven't seen the posting from him recently though. A quick check just now, didn't reveal him either. Unusually, ebay also looks dry.. (not a member of qrz, so can't check them).
Last year I ran across someone at a hamfest selling NOS cinch jones 12-pin female (for the 301 and I <think> 101 line). I paid $10 ea. for just the connectors. I am planning on wiring up as needed. Given that it needs 12 ga wire, this assembly gets expensive fast. The connectors have cinch jones / patent molded on them, but the back-shell doesn't. I guess they could still be counterfeit. They do seem to fit snugly on the rig I tested it on and I plan on using as needed. Right now I share one power cable between 2 301's as needed.
I fear the cost of the connector and shipping alone would likely exceed $30 and that's without the cable itself - you would still have to supply wire and build it.
Best wishes locating one.
Jim
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That should be LSB crystal¡.damm spell checker!
On Sun, 6 Aug 2023 at 12:24, Dave smith via <dave.goathland= [email protected]> wrote: The lab crystal may not be starting reliably¡.old age¡.may need to try varying the ?capacitors in its circuit. Dave. On Sun, 6 Aug 2023 at 12:14, Fred, N1DEC < fcidalab@...> wrote: Hi
I have a FT-301D from new.
Lately sometime I use it the LSB setting is dead in RX and TX on all bands
USB is ok AM is ok.
I also think CW is dead in RX but seems ok in TX.
Then another day it works ok.
Where should I start looking?
I cleaned all the plug-in boards and switches.
Thanks
Fred
N1DEC
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The lab crystal may not be starting reliably¡.old age¡.may need to try varying the ?capacitors in its circuit. Dave.
On Sun, 6 Aug 2023 at 12:14, Fred, N1DEC < fcidalab@...> wrote: Hi
I have a FT-301D from new.
Lately sometime I use it the LSB setting is dead in RX and TX on all bands
USB is ok AM is ok.
I also think CW is dead in RX but seems ok in TX.
Then another day it works ok.
Where should I start looking?
I cleaned all the plug-in boards and switches.
Thanks
Fred
N1DEC
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Hi
I have a FT-301D from new.
Lately sometime I use it the LSB setting is dead in RX and TX on all bands
USB is ok AM is ok.
I also think CW is dead in RX but seems ok in TX.
Then another day it works ok.
Where should I start looking?
I cleaned all the plug-in boards and switches.
Thanks
Fred
N1DEC
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Thanks for sharing this FT-301d restore post.
I have a FT-301 under the workbench that needs restoration
and learning alot from Eric Sorensen's content.
Mike Peace
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I have a 500 Hz CW filter that has quit working due to age. It failed to pass the CW Tune signal so I took it out of the FT-301. It is an International Crystals filter.
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From: "PA7TG" <tjarko.gramsma@...> To: "Felsummers" <felsummers@...>, "yaesuft301d" < [email protected]> Sent: Saturday, August 5, 2023 7:28:15 AM Subject: Re: [yaesuft301d] Low Tune power FIX
Op do 29 jun. 2023 om 22:21 schreef Forest (Gene) Summers < felsummers@...> I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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Op do 29 jun. 2023 om 22:21 schreef Forest (Gene) Summers < felsummers@...> I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. Note: ?After removing C428 from the IF board, it tested 19.8uF on my B&K capacitor check. It is supposed to be 33uF +/- 10%. It has aged but lost value. Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands.?
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WTB: Power Connector in good connection
Hello, I just purchased a rough FT-301 to restore, it's missing the power connector cable. Anyone have a power connector with cable for sale? I can pay by Venmo or Zelle. Shipping to Springfield, Missouri. Thanks,
Mike Peace
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Hi,
Drifting out of spec xtals are typical, Ive had to do the same on others boards as well. This is good input for others trying to fix their FT301s, thanks. There is a company in the Netherlands that has most of the xtals in the 301, Ive purchased a few resurrecting other 301s. CW and SSB filters drift as well since they have xtals inside that have drifted. These filters can be reworked and xtals replaced.
Michael
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I followed this helpful blog, I removed C428 and was able to get 100+ Watts of CW output on my FT-301D. ?Before removing C428, I was getting about 5W tune power on 10m, 15W on 15m, 35W on 20m, 30W on 40m and 25W on 75m. Peak SSB power is around 150W all bands. No CW filter in my unit.
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Re: Calibration off by 2.5 khz. need help.
you might want to sweep your crystal filters also. I have read on the internet somewhere that they also age and change frequency.
I have to many projects going on and cant give you any other information.
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Roland HB9GAA
Fred, N1DEC
Fred, N1DEC
Michael K.
Mike Peace
PA7TG