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Re: Delayed RX after TX
Jim, By any chance do you use an amplified DSP speaker? I use one mobile with my FT857D and if I have it set too high on the filtering I get this issue at times. I just turn down the filtering and it goes away for me. Only a try at a suggestion. 73, Joe / AJ3O
On Tuesday, December 31, 2019, 09:55:15 AM EST, Mike <mjtdk@...> wrote:
Jim, Well if you are connecting straight to the antenna with no tuner or switch/adapters in-line and you have done the master re-set/relay cleaning procedure with no positive results I am at a loss as to what the problem could be or what could have caused it in both radios. If no one on here comes up with a fix I would say contact Yaesu and maybe send one in to be checked out by them but whatever the fix I know all of use 857 owners will be more than interested in the cause and fix. Good luck 73's Troy ke4ska.? |
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Re: Delayed RX after TX
开云体育The VOX is off? Some settings are per band. Sent from my Samsung Galaxy smartphone. I'm even smarter I spotter this crummy advert and my warped seance of humour has made it a mess. |
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Re: Delayed RX after TX
Mike
Jim,
Well if you are connecting straight to the antenna with no tuner or switch/adapters in-line and you have done the master re-set/relay cleaning procedure with no positive results I am at a loss as to what the problem could be or what could have caused it in both radios. If no one on here comes up with a fix I would say contact Yaesu and maybe send one in to be checked out by them but whatever the fix I know all of use 857 owners will be more than interested in the cause and fix. Good luck 73's Troy ke4ska.? |
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Re: Delayed RX after TX
Tks for your reply, Bob. I've got both the Squelch/RF-Gain menu option (#80) set for RF Gain use. BTW, even if the Squelch was the culprit, the audio would go completely silent once the signal (or noise floor) dropped to the cut off threshold.
When this intermittent symptom appears, there's definitely audio coming from the speaker (or headphones for that matter), but any signal(s) on freq is far reduced for several seconds before slowly returning to normal. The S meter's indicated value?drops and then rises at the same rate. If the 857 used a mechanical relay for T/R switching like in older rigs, I could easily believe the relay was sticky. Not the case with the 857 of course though. Tks/73, Jim, ND9M |
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Re: Delayed RX after TX
A single knob is used as the rf gain or squelch control, depending on a menu setting. It doesn't automatically select squelch in VHF/UHF or rf gain in HF. If the menu selection is for rf gain, then rf gain is manual and squelch is automatic in all bands. If the selection is for squelch, then squelch is manual and rf gain is wide open on all bands. Is it possible that the squelch setting (automatic or manual) is wrong for your rigs when in HF? If there is a hidden menu to adjust the automatic squelch level, I haven't run across it yet. Cheers and good luck, Bob VE3HIX
On Monday, December 30, 2019, 03:26:24 PM EST, Jim, ND9M / VQ9JC via Groups.Io <claryco@...> wrote:
Hi Troy,
?
Thanks for the suggestion. I agree that the similarity in the problems between the two 857Ds (albeit on different bands) implies there's something in common. And yes, I have used a tuner with each rig at times. However, a lot of times I connected the antennas directly to the rigs, i.e. with no tuner or antenna switch in line, and the symptoms continue.?
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BTW, when the RX quiets in this abnormal way, the S meter drops accordingly; as the RX audio returns, so does the S meter reading. It's as if the RX on that particular band (again, 17M on one rig, 40M on the other) does not get electronically muted when I transmit, thereby not protecting the RX.
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Often, when I key the rig (CW or SSB) and let up, the RX kicks in normally as if there's no problem and it (both rigs) can stay that way for until the next key down but may remain "normal" for an hour, day, or week. And then it returns; the intermittent appearance is what makes me nuts!
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Just for giggles, I swapped control heads and matched the Menu settings; not surprisingly, there's no difference.
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Tks/73,
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Jim, ND9M
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Re: Delayed RX after TX
Hi Troy,
?
Thanks for the suggestion. I agree that the similarity in the problems between the two 857Ds (albeit on different bands) implies there's something in common. And yes, I have used a tuner with each rig at times. However, a lot of times I connected the antennas directly to the rigs, i.e. with no tuner or antenna switch in line, and the symptoms continue.?
?
BTW, when the RX quiets in this abnormal way, the S meter drops accordingly; as the RX audio returns, so does the S meter reading. It's as if the RX on that particular band (again, 17M on one rig, 40M on the other) does not get electronically muted when I transmit, thereby not protecting the RX.
?
Often, when I key the rig (CW or SSB) and let up, the RX kicks in normally as if there's no problem and it (both rigs) can stay that way for until the next key down but may remain "normal" for an hour, day, or week. And then it returns; the intermittent appearance is what makes me nuts!
?
Just for giggles, I swapped control heads and matched the Menu settings; not surprisingly, there's no difference.
?
Tks/73,
?
Jim, ND9M |
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Re: Delayed RX after TX
Hi Troy,
Thanks for the suggestion. I agree that the similarity in the problems between the two 857Ds (albeit on different bands) implies there's something in common. And yes, I have used a tuner with each rig at times. However, a lot of times I connected the antennas directly to the rigs, i.e. with no tuner or antenna switch in line, and the symptoms continue.?
BTW, when the RX quiets in this abnormal way, the S meter drops accordingly; as the RX audio returns, so does the S meter reading. It's as if the RX on that particular band (again, 17M on one rig, 40M on the other) does not get electronically muted when I transmit, thereby not protecting the RX.
Often, when I key the rig (CW or SSB) and let up, the RX kicks in normally as if there's no problem and it (both rigs) can stay that way for until the next key down but may remain "normal" for an hour, day, or week. And then it returns; the intermittent appearance is what makes me nuts!
Just for giggles, I swapped control heads and matched the Menu settings; not surprisingly, there's no difference.
Tks/73,
Jim, ND9M
-----Original Message-----
From: Mike <mjtdk@...> To: FT-857 <[email protected]> Sent: Mon, Dec 30, 2019 1:19 pm Subject: Re: [FT-857] Delayed RX after TX Jim,
I have 2 857D's one an 07 build the other a 2010 build and have never run into the problem you are describing but for both to be doing the same thing would lead me to think it has to be something common, Question are you using and external tuner or antenna switch with the rig's if so could be something to do with that other than that I'd say you have an interesting problem and I will be more than interested in the finial solution to it. Good luck 73's troy ke4ska? |
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Re: Power on sequence on the schematic
Bob L
开云体育Great hint, I had no idea about the mic setting.? Bob wa7dxz Sent from my Verizon, Samsung Galaxy smartphone -------- Original message -------- From: "Vic WA4THR via Groups.Io" <vhklein@...> Date: 12/30/19 2:53 AM (GMT-07:00) Subject: Re: [FT-857] Power on sequence on the schematic A friend asked me to sell his FT857 and I was preparing a listing, but could not get the rig to turn on. I contacted him and he was sure it had been working, then mentioned he had changed the microphone back to the original from the one with a TT pad that he had been using. I plugged in my TT pad mic and he rig powered up just fine. There is a menu setting that must match the mic being used, so I set it back to the original mic and then the radio worked fine, powered up on that mic and operated well. So...you might confirm that menu setting. =Vic= |
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Re: Delayed RX after TX
Mike
Jim,
I have 2 857D's one an 07 build the other a 2010 build and have never run into the problem you are describing but for both to be doing the same thing would lead me to think it has to be something common, Question are you using and external tuner or antenna switch with the rig's if so could be something to do with that other than that I'd say you have an interesting problem and I will be more than interested in the finial solution to it. Good luck 73's troy ke4ska? |
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Re: Power on sequence on the schematic
Surely this has already been checked...but just in case...
A friend asked me to sell his FT857 and I was preparing a listing, but could not get the rig to turn on. I contacted him and he was sure it had been working, then mentioned he had changed the microphone back to the original from the one with a TT pad that he had been using. I plugged in my TT pad mic and he rig powered up just fine. There is a menu setting that must match the mic being used, so I set it back to the original mic and then the radio worked fine, powered up on that mic and operated well. So...you might confirm that menu setting. =Vic= |
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Re: No turn on
开云体育That's not Engineering; that's like when TV repair was nicknamed
"bottle-swapping" :-( Anyway -- you could probably get a complete set of spare boards (including the control head) for that price by buying a second hand job=-O Stu (G3OCR) On 28/12/2019 03:48 pm, Mel Farrer via
Groups.Io wrote:
Well finally sent the radio in for repair and got the estimate $871 plus shipping.? NO WAY.? They don't trouble shoot to the component level just replace boards.? I would like to know the sequence of the turn on in the radio, but the schematic is not easy to follow.? Just force keying up the main relay does not turn it on.? Sounds like a winter task. |
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Delayed RX after TX
Intermittent issue here. I have two FT857D rigs; one is pushing 10 years old, the other is only one year old. Both developed an intermittent condition with returning to full receive after ending a transmission, regardless of output power or mode (CW or SSB). Intermittent symptoms aside, when I stop keying in CW or let up off the mic in SSB, the receive rush noise may take several seconds (up to a half minute) to return; it almost sounds as if the AGC is kicking in. (I've checked the intermittent symptom on each rig with AGC Auto, Fast, Slow, and Off; no change.) Any or a combination of the three DSP selections don't affect anything either.
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Both the SWR meter and power meter on each rig or on the external meter show that the SWR is good; also the power output is right based on the power level (i.e. 100W or 5W). On the older rig of the two, the affected band is 17M; the newer rig shows the condition exists on 40M.
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I normally power the rigs from an Alinco DM-33OMV switching power supply, but both configs show the same intermittent condition even if I power them with a battery. (The rig is grounded to earth in either case.) The displays on both rigs show the voltage input is 13VDC, even when on battery; measuring the power supply voltage or the battery voltage using a DVM backs up what each rig's display indicates.
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My operating locations are well separated (Florida and Diego Garcia where I'm VQ920JC), and the intermittent conditions are identical at both locations. The rig is grounded to earth at both QTHs. The antennas used are resonant half wave dipoles, using different coax feeds. I've swapped out the feedlines at both locations anyway just to make sure there's no common mode effects or similar; no difference. I've also used verticals a few times without any apparent diferences.
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If it was only one of the two rigs, I'd figure that I'd done something to that particular box, but both are showing similar conditions (band notwithstanding). Resetting to manufacturer's defaults don't have any effect on the problem.?
Watsa? Tks/73, Jim, ND9M |
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Re: Power on sequence on the schematic
Mel Farrer
GOOD ONE Mike, At least this is a start.? I confirmed the main relay can be hard switch on and does pass the 13.8 VDC.? But nothing happens beyond that.? I see from the schematics that the power on switch is a switch to ground, but the path beyond that is ????? I see where there is a control line to turn on the 5So glad you got together with the Stokes again. We are looking forward to having all of you here in 2020. Make sure all your schedules will work. As you said we are blessed to have you and your family in our lives also.DC reg.? So will have to see if the power on switch toggles that.? Anyway, I have to wait now for the unit to come back.?? I will ping the factory about getting a power on sequence description,? LOL. Mel, K6KBE
On Sunday, December 29, 2019, 09:33:31 AM PST, Mike Hawkshaw <mike@...> wrote:
Good luck with it, Mel. ? I actually bought an 857 which wouldn’t turn on (and it had been “had a go at” by the previous owner to boot! ? Mine had a few problems in the main radio body which had been caused by trying to fix it – there is a small ribbon cable which I had to replace e.g. When I bought the replacement ribbon cable, I also got a longer one so that I could extend the board away from the chassis and trouble shoot. ? The switch on sequence does seem to be complex. There is a bit of info on this group if you can sift through it. As far as I can remember, the 12V enters the radio and then goes to the control head via one of the cores of the control cable. At the control head it is regulated down to 5V to run the control head CPU and display etc. There is then a signal sent from the head to the main unit to close that relay and power up. The control head then responds to the main unit to display stuff, so a vicious circle…. My radio’s control head had a failed 5V regulator which was hard to diagnose because I wasn’t really looking there for the fault. Once I’d realised what was going on the regulator was easy to spot and quick to change, but is a small SM component. I didn’t trace the sequence any further because I’d fixed my fault. ? A quick way to eliminate the head is to try one from a willing volunteer but check and double check the cable wiring first! (use his cable?) ? Other people have reported dodgy main connector pins giving too much voltage drop and as I say there are other things mentioned on the group. One thing I’d definitely test is the coil of the relay to make sure it hasn’t gone O/C. ? Cheers, Mike G7AQA. ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Mel Farrer via Groups.Io ? Hello, |
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Re: No turn on
Mel Farrer
Yep, but I am curious about the failure mode.? Darn. Mel, K6KBE
On Sunday, December 29, 2019, 06:20:05 AM PST, Stanley Engel <wa2uet@...> wrote:
FT-857D on sale at HRO for $775.00!!! Stan, WA2UET ? From: [email protected] [mailto:[email protected]] On Behalf Of Don Eklund
Sent: Sunday, December 29, 2019 9:12 AM To: [email protected] Subject: Re: [FT-857] No turn on ? At that price you can buy a new one at the close out prices.? Don Eklund? ?
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Re: Power on sequence on the schematic
开云体育Good luck with it, Mel. ? I actually bought an 857 which wouldn’t turn on (and it had been “had a go at” by the previous owner to boot! ? Mine had a few problems in the main radio body which had been caused by trying to fix it – there is a small ribbon cable which I had to replace e.g. When I bought the replacement ribbon cable, I also got a longer one so that I could extend the board away from the chassis and trouble shoot. ? The switch on sequence does seem to be complex. There is a bit of info on this group if you can sift through it. As far as I can remember, the 12V enters the radio and then goes to the control head via one of the cores of the control cable. At the control head it is regulated down to 5V to run the control head CPU and display etc. There is then a signal sent from the head to the main unit to close that relay and power up. The control head then responds to the main unit to display stuff, so a vicious circle…. My radio’s control head had a failed 5V regulator which was hard to diagnose because I wasn’t really looking there for the fault. Once I’d realised what was going on the regulator was easy to spot and quick to change, but is a small SM component. I didn’t trace the sequence any further because I’d fixed my fault. ? A quick way to eliminate the head is to try one from a willing volunteer but check and double check the cable wiring first! (use his cable?) ? Other people have reported dodgy main connector pins giving too much voltage drop and as I say there are other things mentioned on the group. One thing I’d definitely test is the coil of the relay to make sure it hasn’t gone O/C. ? Cheers, Mike G7AQA. ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Mel Farrer via Groups.Io ? Hello, |
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Re: No turn on
开云体育FT-857D on sale at HRO for $775.00!!! Stan, WA2UET ? From: [email protected] [mailto:[email protected]] On Behalf Of Don Eklund
Sent: Sunday, December 29, 2019 9:12 AM To: [email protected] Subject: Re: [FT-857] No turn on ? At that price you can buy a new one at the close out prices.? Don Eklund? ?
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Re: No turn on
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On Dec 28, 2019, at 4:16 PM, Mel Farrer via Groups.Io <farrerfolks@...> wrote:
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G4IJL
Vic WA4THR