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  1. YaesuFT847
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Re: FT847 160 and 80 MHz

 

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I’m not sure about the question you are asking me I have put this frequency in the title and in the message 160 m and?80 m. The error appears across the screen as if it was out of band as it would, if you were trying to transmit out of band. Whereas 160 m and 80 m are not out of band. This only happens if I were to try and TX.?

Jeff (M0UHF)

On 14 Oct 2022, at 15:39, Andy Bosworth <sidthepop@...> wrote:

?
More information needed.?
Where does it show error?
On what frequencies?

On Fri, 14 Oct 2022, 15:36 Jeff M0UHF, <jeff.elliott45@...> wrote:
Hi, I have just received a ft847 and I have noticed it does not work and shows error as if it was out of band on 160m and 80m. Please can somebody advise.?

Re: FT847 160 and 80 MHz

 

More information needed.?
Where does it show error?
On what frequencies?

On Fri, 14 Oct 2022, 15:36 Jeff M0UHF, <jeff.elliott45@...> wrote:
Hi, I have just received a ft847 and I have noticed it does not work and shows error as if it was out of band on 160m and 80m. Please can somebody advise.?

FT847 160 and 80 MHz

 

Hi, I have just received a ft847 and I have noticed it does not work and shows error as if it was out of band on 160m and 80m. Please can somebody advise.?
Re: Distorted audio signal on shortwave (rx!)

 

I have always used an extension speaker with my 847, far bettwer quality.
Leighton. GW3FSP.
Re: Distorted audio signal on shortwave (rx!)

 

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I found the solution:
the internal speaker is "a kind of" defect.
By pluging in an external speaker, no distortions are there.

Thank you all for helping me.

I have another problem with that trcv but I will open a new thread if I find nothing in the archive...

73, Tom

Am 20.08.2022 um 10:26 schrieb Tom DJ6TB:

@Spence: well great Idea!
I will record a video and upload it to youtube. Then I share the link here...

It takes a couple of days since I am in vacation now.

@Andy, I speak about low frequencies (ca. 300 ... 800 Hz) and not low volume.
The effect can be shown by putting a sound generator at the input of the TDA and wobble the frequency then...

I'll be back after my holidays...

73, Tom


Am 18.08.2022 um 23:33 schrieb Spence M0STO via groups.io:
Can I please inject a suggestion.....?

Make a short video and post it on YouTube as private for those with a link so we can all see the issue.

? Failing that I will create a guest account on my FTP server and upload it there!

De Spence M0STO?

Sent while portable! please excuse typos.

On 18 Aug 2022, at 22:03, Andy Bosworth <sidthepop@...> wrote:

When you say "at low audio frequencies", do you mean low frequencies, or low AF Gain on front panel?

I think there may be a translation problem.

Regards

Andy
Re: Speech Processor

Max Donoghue
 

It does work quite well
Re: Speech Processor

 

On or off I mean

Get

Re: Speech Processor

 

Correct connor off

Get

Speech Processor

 

Is the speech processor just on/off? I don't see anywhere to adjust the compression level.? Thanks
Re: Discriminator Meter Off Center

 

Max,
Yes, I was looking at one of those Kuhne electronic QH40A Cyrstal heaters something like you have. I was worried about the trimmer also being a problem,? so thought kill 2 birds with one stone on the TCXO. Sure I will do one or the other, I can get a TCXO for $12 total so that would be the cheapest route.
Re: Discriminator Meter Off Center

Max Donoghue
 

I installed one of these on X1001 crystal



Works quite well.

Max
Re: Discriminator Meter Off Center

 

Thanks, that did the trick changed L 26-28 and H 33-36. Rig if on freq adjusted it on UHF with my IFR-1200S so within about 10hz. The variable not the best. Think I will put in a TCXO next.
Re: Discriminator Meter Off Center

 

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Correct

?

Make sure everything is on frequency first!

?

73

?

Andrew

?

From: [email protected] [mailto:[email protected]] On Behalf Of Max Donoghue
Sent: 28 September 2022 19:21
To: [email protected]
Subject: Re: [YaesuFT847] Discriminator Meter Off Center

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I had the same problem. I had to go into the service menu and adjust the DISC-L and DISC-H settings. Look in the files section.

Max

Re: Discriminator Meter Off Center

Max Donoghue
 

I had the same problem. I had to go into the service menu and adjust the DISC-L and DISC-H settings. Look in the files section.

Max
Discriminator Meter Off Center

 

Hello, I just got my first FT-847 a week ago. I notice the discriminator always pulls to the left even with no signal. I did adjust the ref osc as it was off freq a bit.
Looks to be about 900hz off. I looked through the service manual briefly but didn't see a way to center it. Thanks? K9CZ
Interesting bug...

 

Hi folks,

With the return of sunspots and randomly good propagation, a short note which you might want to know about.

I heard early today that propagation on 10 meters was open from the West Coast to the mid-west, where a number of 10 meter FM repeaters reside.? I've worked some of them in the distant past (prior cycle), so went listening.? The trusty 847 automatically dialed in the -100khz offset as I poked in the 29.620 FM frequency.? Nice.

Later this afternoon a fellow ham asked for a radio check for his new 10 meter antenna, so we agreed to meet down in the SSB portion of the band.? Punched in the new frequency, tapped SSB, and keyed up.? He repeated his call.? No contact.? Finally I noticed that the 847 was still in repeater mode (even though I was clearly in SSB), therefore transmitting on the wrong frequency.? Pushing the RPT button did not work to turn off RPT.? I had to switch back into FM, turn off RPT, then switch back to SSB.

{sigh}? You probably already know this, but it bit me today.

Greg? KO6TH
Re: No power on SSB

 

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Well done for finding this, I wonder what killed the amps, check the 8V and 5V rails!

?

73

?

Andrew

?

From: [email protected] [mailto:[email protected]] On Behalf Of Suryono Adisoemarta via groups.io
Sent: 13 September 2022 08:06
To: [email protected]
Subject: Re: [YaesuFT847] No power on SSB

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A quick update as a closure to the no SSB problem. After I got help by a friend in tracing the audio signal, we had to replace the NJM2902 op-amps. I went ahead and replace both chips.
The radio is working good again.

73 de Yono - YD0NXX

Re: No power on SSB

 

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Wonderful news!

Glad you got it sorted out and kudos to your friend for helping.

Micky K1XH


On 2022-09-13 03:06 AM, Suryono Adisoemarta via groups.io wrote:

A quick update as a closure to the no SSB problem. After I got help by a friend in tracing the audio signal, we had to replace the NJM2902 op-amps. I went ahead and replace both chips.
The radio is working good again.

73 de Yono - YD0NXX

Re: No power on SSB

 

A quick update as a closure to the no SSB problem. After I got help by a friend in tracing the audio signal, we had to replace the NJM2902 op-amps. I went ahead and replace both chips.
The radio is working good again.

73 de Yono - YD0NXX
Re: UHF Range: Partial RX/TX Issue.

Max Donoghue
 

I second the Tiny SA. I bought one recently while trying to solve my no UHF output issue. They are great little devices. I have the matching analyser and oscilloscope. While not costing nor matching the performance of the more expensive options out there, there are great little instruments to have in the shack for basic troubleshooting.

Max
VE3TMT
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