YAESU FT-920 USERS GROUP

Re: WSJTx FT-8/4 Ops on FT-920

tschmidt6060@... (Tom Schmidt) — Mon, 24 Feb 2025 18:37:24 -0800

Hi Marty,

I'm not familiar with the MacBook Pro. I'm sorry to say I cannot suggest what to do with your timing issues.

Tom, N8EUI

Re: WSJTx FT-8/4 Ops on FT-920

mcwayne2@... (mcwayne2) — Mon, 24 Feb 2025 16:51:49 -0800

Tom,

I am using have been using the onboard time source in the MacBook Pro. I have used it for years with my FT-1000MP and the older WSJTx software (V 2.3 and previous) just fine. I have restarted both the WSJTx software and the computer a couple times to see if the WSJTx would link up with the laptop clock with no apparent success. I have periodically used Time.is to verify that the Apple clock was correct. For some reason, neither seem to work with V7.0. Is there something special I need to do?

Marty Wayne

408-234-8023

mcwayne2@...

Re: WSJTx FT-8/4 Ops on FT-920

tschmidt6060@... (Tom Schmidt) — Sat, 22 Feb 2025 17:58:13 -0800

As far as no messages showing in the Band Activity window, do you have your computer time synced with the WSJT-X software? Timing is everything with regards to making WSJT-X decode contacts. The two must be in sync with each other. Meinberg and NetTime are a couple of time sync programs that work.

Tom

Re: WSJTx FT-8/4 Ops on FT-920

mcwayne2@... (mcwayne2) — Sat, 22 Feb 2025 10:04:42 -0800

Thanks for the info Tom. I have my radio tab set up much like yours. According to the 920 manual, the serial port parameters should be set to 4800, no parity (no provision to set parity on my setup), Data bits 8, and stop bits 2. That is how mine is set. Stop bit set to none, 1 or 2 didn’t seem to make any difference. PTT=VOX; Transmit audio source not selectable (greyed out, shows Front/Mic); Mode=Data/Pkt; Split Ops=None.

I think I found why the TX didn’t seem to work. The VOX button on the radio needed to be pressed. Now I have good power control with the SignaLink USB. So it seems to transmit OK. The issue now is receiving

The radio receives OK and I get signals painted on the waterfall but no messages showing in the Band Activity window. ?????

I really appreciate the help.

73,

Marty, W6NEV
mcwayne2@...
408-234-8023

Re: WSJTx FT-8/4 Ops on FT-920

tschmidt6060@... (Tom Schmidt) — Fri, 21 Feb 2025 20:52:00 -0800

I have a '920 and a Signalink USB configured for WSJT-X. Attached are photos and PDFs explaining how I have it set for on my PC. I hope this works for you. If you have any questions, feel free to ask.

73,

Tom, N8EUI

WSJTx FT-8/4 Ops on FT-920

mcwayne2@... (mcwayne2) — Fri, 21 Feb 2025 12:58:54 -0800

I have been trying to get my FT-920 to operate with WSJTx. I am using a SignaLink USB soundcard and a MacBook Pro computer. I have searched the web for set-up instructions and have been unsuccessful trying any of them. Anyone have any help her.

Yaesu FT-920 Noise problems related to voltage

sebastian.petters@... (Sebastian Petters) — Tue, 07 Jan 2025 08:01:54 -0800

Hey friends,

i have a FT-920 which has some strange problems.

When turning on the TRX with 13.8V supply, it makes strange noises and you can't hear any signal/noise. If i'm lowering the voltage to about 11.8V, RX works without problems.

I have replaced Q9002 (12V Voltage Regulator), Q9003 (Switching Controller) and Q9001- still the same.

Any idea what to check next? I'm a little bit lost with this one..

Here is a video of the problem with sound: https://www.youtube.com/watch?v=sZzLsMEYBV4

Re: TX Output Spike

sebastian.petters@... (Sebastian Petters) — Tue, 07 Jan 2025 06:20:57 -0800

Thats the way i measured it - with an storage scope.
Currently, i have no idea about the duration of the spikes - but it was enough to kill an Amp of a friend.
I can measure them again, but first i have to finish another broken FT920. Hopefully at weekend, i'm ready for measure.

Re: TX Output Spike

wa5tku@... (Wes Atchison) — Tue, 07 Jan 2025 06:10:48 -0800

Sebastian,

Thank you for reply. That is good to know information. Could you tell me what you used to capture the spike. I have assumed it would be too fast to record without a storage scope. Any idea of the duration of the spike?

73,

Wes WA5TKU

Re: TX Output Spike

sebastian.petters@... (Sebastian Petters) — Tue, 07 Jan 2025 03:31:11 -0800

Hey Wes,

i have 2 FT-920. One of them produce RF spikes (the newer one). If you set the TRX to eg. 5W, the spikes will be full 100W.
The other one doesn't (the older one).
So best would be to measure yours.

TX Output Spike

wa5tku@... (Wes Atchison) — Mon, 16 Dec 2024 08:15:45 -0800

I searched the group and have not found this subject. Does the FT-920 have an RF spike when PTT is applied? A lot of radios of that vintage do but have not seen or heard of the FT920 having it.

Wes WA5TKU

Re: ft 920 loss of TX on all Bands

ei6ghb@... — Thu, 05 Dec 2024 02:53:09 -0800

Mark, thanks for taking the time to tell me what I should not assume and to have a dig at CB'ers ??? But you missed the point of my post, I was asking for assistance or if anyone else had experienced this issue. You clearly can't help.in either case.

Re: ft 920 loss of TX on all Bands

bigpimp347@... (Mark) — Mon, 02 Dec 2024 10:07:15 -0800

never assume it needs 'finals' that's as i quite often see a CBers diagnosis..

it could be a driver, or even an ALC problem, or power to the devices issue..

just assuming might end up fixing it, but there needs to be a reason they failed, transistors don't just fail,

they use over rated devices to ensure they last so if they have failed, ask why..

ft 920 loss of TX on all Bands

ei6ghb@... — Mon, 02 Dec 2024 08:29:08 -0800

Hello Group, my 920 started losing all tx power after 1-2 hrs use but after a while it would return and the radio would work fine , last night it finally gave up, the radio fires up and receives no problem but no Tx power on any band, i'm assuming i need a pair of new MRF's or has anybody else experienced this.

thanks in advance.

PLL not locking..

sebastian.petters@... (Sebastian Petters) — Sun, 27 Oct 2024 16:32:18 -0700

Hello friends,

i have a FT-920 which has a Problem with no PLL lock (frequency display is flashing).

I found that the 2nd LO isn't producing any output.

So i checked Q2028, Q2029 and all surrounding components.

Also the crystal X2001 (60,77MHz) was checked with an VNA and looked good.

So i have Q2027 (2SK210GR FET) in suspicion. But this component tested good in a cheap multi-function tester...

Where and what could i check next?

Sebastian

Re: Unblock TX (GEN)

hi8dlp@... (HI8DLP) — Tue, 01 Oct 2024 16:30:27 -0700

Ok, I have that executable but unfortunately, I don't have the proper old hardware to run it now, thanks a lot Jim for your generous help. 73 and any news I'll post here.

Re: Unblock TX (GEN)

jim@... (Jim Warner) — Tue, 01 Oct 2024 16:00:04 -0700

It's been a while...I think the EPROMS hold the bios and digital filter tables, the market based parameters stored in the cpu eeROM.
Jim

On 10/1/2024 15:38, HI8NPM wrote:

Re: Unblock TX (GEN)

jim@... (Jim Warner) — Tue, 01 Oct 2024 15:49:25 -0700

I have used the Vertex/Standard att0274.exe and it works fine, with two prerequisites. No Windows, must be DOS. And no virtual USB comports. Must be a physical RS-232 com port. I personally would use the overwrite included with the .exe utility. I've only run into a half dozen or so "export" motherboards over the years, and never had any problem using the DOS utility to rewrite the table. Well...maybe a little nervous on the first one!
Jim Wa9Z

On 10/1/2024 15:38, HI8NPM wrote:

Re: Unblock TX (GEN)

hi8dlp@... (HI8DLP) — Tue, 01 Oct 2024 13:38:28 -0700

Hi Jim and thanks for your fast answer, i have the original main board damaged by another problem but it receives well and has the mars mod, I know of an executable file under the old DOS operating system that seems to update the band table in the eprom but I have my doubts about using it. Do you know if the 920 stores this data in one of the 2 external eproms or in the cpu itself (MB90P263), perhaps I could copy its data and rewrite it in this one. Thanks again Jim.

Re: Unblock TX (GEN)

jim@... (Jim Warner) — Tue, 01 Oct 2024 12:06:38 -0700

Pablo,
It's a JA market control board. You can use it, but you'll need to install NA TX partition table, then do your hardware mod.
Jim WA9Z

On 10/1/2024 11:28, HI8NPM wrote: