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If anyone has an FT847 they are parting out, I am looking for the outer trim piece from the unit. Mine arrived cracked during shipping. Thank you for looking Kent K9EZ

From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 21:41 To: Andrew Lenton Subject: Re: Cable as shown is what you need Some of the satellites have SSB uplink on UHF. Whether I use them or not at least I know the radio is capable. Thank you for all the help along the way Andrew, I gained lots of experience in troubleshooting from your instructions. Max On Sat, Aug 6, 2022 at 4:20 PM Andrew Lenton <a@...> wrote: Hi Good news I guess you mean bands, I would trust the meter on the radio, and the current going into the radio! Well done 73 Andrew 2020 here of to eat a sandwich From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 20:27 To: Andrew Lenton Subject: Re: Cable as shown is what you need I've returned the tx according to the service manual. RF meter on radio now showing 50w. I think the external meter is not accurate on UHF. Anyway I am very happy with the results. Now I can work all the birds! On Sat, Aug 6, 2022, 3:17 PM Andrew Lenton <a@...> wrote: Progress, so there were two faults Q4001 was put on by someone else chasing the fault, so we are back to chasing the low RF input So with -30 dBm in and 5 Watts out we have 37dB gain I much prefer that! So we are only looking for 10dB extra gain. To get 50 Watts Check what is coming in on VHF? Should be -20dBm ish? 73 Andrew From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 20:03 To: Andrew Lenton Subject: Re: Cable as shown is what you need Okay so I just unsoldered Q4001, cleaned the 4 tabs, resoldered and now I am getting 5W out on the meter with the RF power up all the way On Sat, Aug 6, 2022 at 2:58 PM Andrew Lenton <a@...> wrote: I thought you were not getting anything UHF TX wise, what is the level on VHF TX? I also thought you were not getting anything out of the UHF VCOs’ or do you have signal now there? -30dBm seems low, but I may be wrong -30dBm to 47dBm (50 Watts), is 77dB gain, on the PA board I am sure with that amount of gain it would hoot! So I feel it should have more coming in hence check what the VHF side is doing level wise? I have used professional DTV amplifiers, that go from -15dBm to 300 Watts (54dBm), but these are precision engineered and weigh over 150lbs !! 70dB gain 73 Andrew From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 19:33 To: Andrew Lenton Subject: Re: Cable as shown is what you need Nothing. I think Q4001 is shot. I'm getting -28.9 dBM om the input of Q4001 and -69.9 dBM on the output On Sat, Aug 6, 2022 at 2:15 PM Andrew Lenton <a@...> wrote: Turn the gain to max see if you get any RF coming out From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 19:13 To: Andrew Lenton Subject: Re: Cable as shown is what you need I even tried using the HT to inject a signal on the low power setting. Nothing. On Sat, Aug 6, 2022 at 1:59 PM Andrew Lenton <a@...> wrote: Interesting, not sure how much level it requires? You could measure the VHF side, see how much TX IF level is, the problem is if it say 50 to 100mW, it will damage the SA without an attenuator 73 Andrew From: Max Donoghue [mailto:ve3tmt@...] Sent: 06 August 2022 15:01 To: Andrew Subject: Re: Cable as shown is what you need Just tried a direct coax connection. No change. HT is picking up the signal from the Tiny SA no problem though. On Sat, Aug 6, 2022, 9:47 AM Andrew <a@...> wrote: Get Outlook for Android

Well now that the UHF transmit problem was resolved (thank you again to everyone), my next issue is the FAST function does not work from the microphone or by shorting the appropriate pins on the mic jack. When I press the FAST button on the front panel the icon shows up and tuning increases as expected, so it is working from the panel. I'd like to resolve this as I need to align the SHIFT control and I can't get in to the adjustment menu without the FAST button working on the mic. Max

Hi folks, I've been using an MH1-B8 microphone for a while (few years), substituting for the rig's original MH-36D which had the disintegrating rubber cord problem. Following up on recent suggestion on the Amsat forum, I ordered and received a replacement cord meant for the MH-36 with the RJ plug. Cut off the RJ and connected the 8-pin round connector, and it seems to work, including the DTMF keys which is why I wanted to do the repair. But, I'm getting reports that my audio has a sort of hum on it, and the volume is rather hot, even with the microphone gain turned all the way down. I double checked the wiring, and I think it's right. The new cable has 6 wires instead of 7, so left the missing "Fast" line unconnected on the 8-pin. The MH-36D has no such button, so no loss there. The 2 grounds (mike and other) are connected together at the 8-pin connector; there's no "shield" on the cable, nor was there one on the original. Is this behavior - the hum and loudness - "expected", or is there something else going on? I see what appears to be a small potentiometer inside the mike, just above the connector. Does that need to be adjusted? What is it for? I haven't touched it as yet, but I'm not the radio's original owner. Thanks, Greg KO6TH

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

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

Is the speech processor just on/off? I don't see anywhere to adjust the compression level. Thanks

Hi all, I have noticed on my "new" FT-847 that the receive audio signal on shortwave is distorted at low audio frequencies. I suspect that the TDA2003H has a defect. At the input pin the signal still looks good, but at the output (also at the speaker jack) it is distorted. Does anyone know the problem? The capacitors in this area look good. Also, the attenuator does not work on shortwave. If you press the button, the audio signal crackles. Bad shopping? 73 de Tom, DJ6TB

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.

Hey all, just found this group. Maybe this is a stupid question but bear with me. Is there a way to get RX-only on HF (or disable TX on the the antenna port)? I don’t use HF much in my 847 and got the idea to maybe hook that antenna port up to the RX-out on my FTDX3000. But I don’t want to fry it by accidentally keying up my FT-847. Is something like this viable? Or should I just buy another receiver like I was planning to do before I got this idea… thanks! John KB0GGS

Is it possible to transmit and receive in the same band when in Satellite mode? Thanks, Andy

CatRadio is the new free software to control rig via PC. It uses the Hamlib libraries and supports many models and functions. Please download here https://www.pianetaradio.it/blog/catradio/ and reports bugs or suggestions.

Hi FT-847 users, I have the problem with my FT-847 that with FM the squelch closes a little, but when turning the knob further to the right, the squelch opens again. If the squelch knob were a clock face and if there is no signal on the VHF/UHF band: So if the knob starts at 7 o'clock and the squelch closes at 8 o'clock, it opens again at about 11 o'clock and then remains open until the right stop. With SSB everything works fine. I would venture over with meters, oscilloscope etc if I knew where to start. Is there a comparator or Schmitt trigger where I can start my search? Circuit diagram is available. Thanks for reading! 73, Tom, DJ6TB

Hello Group - Trying to troubleshoot a Transmit Problem - trying to set-up for FT8 HF. As I adjust RF Power and MIC Gain while transmitting FT8 the -847 cuts out and Display flashes and I loose CAT connection. Note - this also occurs if I use a microphone. As I increase MIC Gain it cuts out. During FT8 HF - as I adjust MIC Gain I get to a little over 10-12W and the radio cuts out. I’ve tied all combinations of FT8 input levels to no avail. What am I doing wrong?? Or is there a problem with the radio?? Phil KD2XN