¿ªÔÆÌåÓý

  1. Yaesuft301d
  2. Messages
Expanded Topics Messages Polls
Date
Re: Ft-301ad blinking s-meter no transmit

 

Good job and congratulations Steve.
Re: Ft-301ad blinking s-meter no transmit

 

So this is a bit embarrassing and frustrating. Turns out that brown wire just needed to be connected to 13 volts and now everything works! I strongly suspect that was the problem all along. I can't believe I missed this when I was checking for loose connections. Well, at least I learned a but about soldering and desoldering?thyristors!

I have a lot more work that needs to be done to this rig, but getting her to power on is a good first step! Thanks for the help guys, I'll start a new thread when I get to the next hurdle.

-Steve KI7WQH
Re: Ft-301ad blinking s-meter no transmit

 

Hi Steve, So one end of the brown wire is still connected one end is hanging free.? Where in the circuit is the connected end connected?? Such as junction of R14 and C28 or some other location.? That might help determine where the free end goes.

Bye for now.
Re: Ft-301ad blinking s-meter no transmit

 

Well, bad news it seems. I replaced d1301 and Q1301 and have the same problem - of course, this brown wire is still not connected to anything so that might be related, but I'm still not sure where it goes. Any ideas?
Thanks!
-Steve
Re: FP-301D ID PROM

 

There's a sw on the front already for ad hoc IDs.
I'm on 3853 LSB it you's like to hear it.

Randy
Re: FP-301D ID PROM

 

Wanted to chime in with thanks. I intend to do the same for my FP-301D, perhaps with a mod to actuate ID on demand. I am not long winded enough for a ten minute timer!






On Tuesday, June 23, 2020, 3:18 PM, Randy W7CPA <randybest@...> wrote:

[Edited Message Follows]

Finally 100% it's alive.
de W7CPA ar
The Japanese FP-301D manual is correct.
It's just a bear to markup the sheet with a pencil and then create the ordered 2 byte list for a PROM Programmer.
I did this for grins and probably will never use it.
The 10 minute timer only works if PTT is enabled for 10 minutes straight with no interruptions.
Interesting olde 1970s digital design.

Cheers all,

Re: FP-301D ID PROM

 
Edited

Finally 100% it's alive.
de W7CPA ar
The Japanese FP-301D manual is correct.
It's just a bear to markup the sheet with a pencil and then create the ordered 2 byte list for a PROM Programmer.
I did this for grins and probably will never use it.
The 10 minute timer only works if PTT is enabled for 10 minutes straight with no interruptions.
Interesting olde 1970s digital design.

Cheers all,
Re: Ft-301ad blinking s-meter no transmit

 

UPDATE:
I replaced the d1301/cw01b that FINALLY arrived today. The problem persists and I noticed something that I think might have happened as a result of this thing sitting on my bench forever or its possible i missed this before, but I doubt it. I have a stray wire! Does anyone know where this brown wire is supposed to go? Who knows, maybe it will fix my problem. Would be nice considering I'm STILL waiting for the Q1301. Apparently this coronavirus thing is holding up a lot of shipments. Hope everyone is well.
Re: FT-301D steady on "tx"

Othmar S.
 

Thank you Pino for the link !
Price is nice ! ?
Saw also a company in Switzerland which produces the board, but more expensive.

Tnx, 73 !
Othmar, OE1SOW
Re: FT-301D steady on "tx"

Othmar S.
 

Thank you Rex for the information !

Let's see how i decide ?
I have here a lot of Icom-rigs and not too much space any more, hi...
I will have a look at the VOX-unit the next days.
LSB/USB-"problem" is band-depending...so I think the trx needs some alingment.
I will give the group info if I will try to repair or to put in on the market.

Thanks again and good DX !
73, Othmar, OE1SOW
Re: FT-301D steady on "tx"

 


Hi Othmar,

if you need a replacement display board look also at the amazing job of WA7ZVY Paul Messer, you can find an example here: Good luck with your restore.

Pino, IK2HEW

At 13.39 10/06/2020, Rex K0KP wrote:

[Edited Message Follows]
Hi Othmar and welcome to the group!? Whether or not to repair the 301D is up to you but if you do repair it you will have a fine rig.? The display problem is common with the LED units burning out.? Replacement display units are difficult to find.? Elcon makes a nice replacement display for the rig, there is information about the Elcon unit posted at this site.? Look in the "Files" section and click on the "Modifications" folder.? The problem with the VOX module should be repairable without too much difficulty.? Yes the LSB reception problem could be an alignment issue or perhaps a problem with the LSB carrier oscillator.? Good luck and keep us posted with your work on what could be a great rig.? The receiver is spectacular in this radio.

Re: FT-301D steady on "tx"

 
Edited

Hi Othmar and welcome to the group!? Whether or not to repair the 301D is up to you but if you do repair it you will have a fine rig.? The display problem is common with the LED units burning out.? Replacement display units are difficult to find.? Elcon makes a nice replacement display for the rig, there is information about the Elcon unit posted at this site.? Look in the "Files" section and click on the "Modifications" folder.? The problem with the VOX module should be repairable without too much difficulty.? Yes the LSB reception problem could be an alignment issue or perhaps a problem with the LSB carrier oscillator.? Good luck and keep us posted with your work on what could be a great rig.? The receiver is spectacular in this radio.
FT-301D steady on "tx"

Othmar S.
 

Hi from Vienna !?

I joined the group because I got an FT-301D from a silent-key (sk abt 8 years ago).?

The trx stood for this long time in a basement on the floor. Unfortunately with no mic and no power-cord.

Took it home and put it on 12 V.?

Meter-lamp is ok, the frequency-display is not 100% ok, some digits are missing, but I read this is kind of "normal" :-)?

But...there was no reception...no audio coming out of the speaker.?

A little later I realized that the trx it on "tx" even with no mic plugged in.?

MOX was not enabled. Then I checked all the plug-in-cards (nice design !), but again no difference.?

So I pulled out the VOX-unit and...voila - there was reception !?

Faults that I found:?

1) The always on "tx" - problem and?

2) the reception in USB and LSB is not equal on all bands.?

? ? e.g. on 40m there is nearly no rx on LSB (USB is ok)?

Maybe it is just a case of alignment... ?

Anyone had similar problems or knows what might be the problem with this trx ??

Rx without the VOX-unit is ok now, power output is also ok (100W CW/SSB, 25W AM), modulation is ok...

Is it worth repairing it ??

Or shall I sell it for spare parts ??

It is in a nice old shape with some scratches on it, but the front looks really nice.?

Should be from a very early series, it has the 11m-band between 15m and 10m,?

but its not the "CBM"-version.?

Any help is appreciated ! :-)?

?

Thanks a lot for reading,?

73 from Vienna/Austria?

Othmar, OE1SOW
Re: FP-301D ID PROM

 

First test almost perfect.
Telsa 188 clone and TI 288 work fine.
I screwed up the programming so one more time.
is going to program one more time with my correction.
I didn't transpose the manual work sheet to the ordered 2 byte programming sequence correctly, hosed? one byte up.

The result was DE W7CP <bluh snuf, mumble> AR
Re: Rubber plug on right side

 

Hi Randy,

thank you for your answer, I also made the same hypothesis but there is no need of an accessible point for maintenance with the cover closed.
Just rotate the jack 90 degrees and you save an hole and a rubber plug.
I also made another guess about a possible synthesizer accessory, never sold.
At that time, as far as I know, no amateur transceiver had memories and Yaesu already proved its "capabilities" with the FT-225's memory unit accessory.
May be that somewhere, somebody have an hidden picture.....
Or just an idea to connect there a DDS to the FT-301...

About the "A" version, digital, with booster unit installed, as visible on advertising, have you ever heard about differences with the non-A ?

Thank a lot again.

Cheers,

Pino.

At 02.20 02/06/2020, you wrote:

Pino,
Benvenuto.

The 3.5mm jack is an undocumented feature to break and connect to the RF CARD directly. Why, I no idea but the schematic shows it. Patso. Perhaps a way to use only the RF CARD and PA for factory test purposes?

The different models are low power variants but documentation does not exist.

Cheers,

Randy
Arizona USA

Re: Rubber plug on right side

 

Pino,
Benvenuto.

The 3.5mm jack is an undocumented feature to break and connect to the RF CARD directly. Why, I no idea but the schematic shows it. Patso. Perhaps a way to use only the RF CARD and PA for factory test purposes?

The different models are low power variants but documentation does not exist.

Cheers,

Randy
Arizona USA
Rubber plug on right side

 

Hi all,

and thanks for welcoming me into the group. I'm Pino IK2HEW and own an FT-301D since I was sixteen. After more than 25 years I've powered up it again and now I'm trying to restore it.
I have a couple of questions for experts. Despite my research, I never got an answer.
Does anybody know the use of the 3.5 mm jack below the rubber plug on the rigth side of the case ?
It disconnect power to the premix board and route the signal coming from the jack to the RF board in place of the one coming from the premix.
The second question concern the know differences between the FT-301D and FT-301AD versions.
I never found any document on this subject.

Thank you all in advance for your help.

Pino.
Re: Ft-301ad blinking s-meter no transmit

 

I found a good deal on replacements for both D1301 and Q1301 but still waiting for them to arrive, in the meantime I thought I would post some pictures of other things I've fixed and ask another question. When I first got this rig it was poorly shipped and beat to hell in addition to the technical problems. The VFO knob was smacked so hard it shattered the plastic ring around the knob. Since I don't have a 3d printer I carefully collected all the pieces and reconstructed it:



I sanded it smooth and am going to put some light coats of paint to hide the (barely noticeable) cracks and think I will get it extremely close to the original.?

Now one problem is the VFO mechanism took a beating as well and the knob is no longer smooth. I can only find a replacement VFO from the analog version and I'm not sure if they are interchangeable? Maybe someone knows the answer to that. I may also be replacing the display with the aftermarket display from elcon so I think I need to take the VFO out anyway.
Re: Need 10A and 10B crystals - my 301D came from a good buddy.

N3 EG
 

Mine was also a restoration.? Got it for $40 at a hamfest along with some vintage Heathkit stuff.? It had a bad audio board and two blown out MOSFETS in the front end, along with the PA being connected backwards and bad S meter.? Works great, still has an AM alignment issue.
Re: Need 10A and 10B crystals - my 301D came from a good buddy.

 

I'll check my junker 301 later today.
The first FT-301D I restored? is fully operational in good buddy land (41.5MHz crystal)
10D is also sacrificed for good buddy ops. I got tired of trying to figure out what they did since I plan to sell this one on eBay to recover some $ on the restoration quest.
341 - 360 of 428