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I want to use a tuner for my ft847!
I want to use a tuner for my ft847! Whilst I know the FC 20 is used with this radio, I don’t have one but I do have the FC 40 but I can’t seem to find any information confirming that this Radio works with any other tuner. Maybe somebody has some information out there or do I just go ahead and try it???
I have a friend who might buy my FT847 and he has a Mat40 tuner Which has beenUsed on A Yaesu FT891 and FT857 And yet again, I cannot confirm whether this will work for him. Any thoughts appreciated thank you |
Re: FL-7000 Interface with a FT-847
Ho Tom,
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I think you are correct, it is just belts and braces to isolate and not a bad idea. I have just fitted a ptt socket on my K2 using two MOSFETS, the ptt transistor is rated 500vV 20 Amp so will handle anything. I did not use an isolator but not a bad Ide. 73 Andtew Andrew ?Get BlueMail for Android ? On 26 Jan 2025, 22:58, at 22:58, "K6EU via groups.io" <wa4qvq@...> wrote:
I don't see why one needs a buffer to connect the PTT in the amp to a |
Re: FL-7000 Interface with a FT-847
I don't see why one needs a buffer to connect the PTT in the amp to a FT-847.? Per the amp manual the open circuit voltage is 12V and the current is 10ma max.? The stby jack? on the 847 is rated at 24V and 100ma.? Thus the voltage rating is twice the needed voltage and the current capability is 10 times the needed current.?? I've used my 847 with several different solid state VHF amplifiers and never had a problem.? Now if you were connecting an old tube amplifier there likely would be a problem as the amp key line is often a negative voltage over 100 volts.? Just read the amp manual and check the max voltage and current rating required.? 73, Tom K6EU On Sun, Jan 26, 2025 at 12:08?PM Spence G5STO via <unavailable.equal=[email protected]> wrote:
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Re: FL-7000 Interface with a FT-847
开云体育?Hi, ? ? Justin a quick question? What are your expectations? Band change? Or just TX and ALC? ? I have both but there is no band change data from an FT847 but you do have standby for PTT. You cannot hook up the FT847’s PTT socket to the FL7000 without safely using a buffer. You just need a cheap optoisolated relay with short to ground. That goes to the STBY socket of the FT847 and the buffered side to the FL7000. The ALC “from memory” is -9vdc but might be wrong. I use mine straight though but let me double check that the -9vdc is in the range for the FT847 as I also have the VL1000 and that again has no option for band change other than use the F button in sequence and let the radio auto sense band from the signal. ? Other radios like the FT840 I have the band data but not the FT847. De Spence G5STO? ?? Sent while portable! please excuse typos. On 26 Jan 2025, at 19:40, Mal Whitby via groups.io <vk2mw@...> wrote:
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FL-7000 Interface with a FT-847
Mal Whitby
开云体育
Hi Guy's n Gals.?
I recently purchased a FL-7000 & was wanting to interface it with my FT-847.?
Was wanting to know if anyone has interfaced their FT-847 with a FL-7000 & could let me know the pin-outs for a interface cable, or where I may be able to get one from.
Your help is greatly appreciated.
Best 73 ? Mal J Whitby VK2MW ? |
Re: disable ptt function on rear DATA jack in the presence of isolation transformers?
开云体育Oops, forgot the 2.2k in the upper diagram!? See the revised circuit, attached.Greg? KO6TH Greg D via groups.io wrote:
Hi Rob, |
Re: disable ptt function on rear DATA jack in the presence of isolation transformers?
开云体育Hi Rob,I've not found the need to have an isolation transformer, but yes, DC blocking is needed to keep the rig from going into transmit.? If you don't have a transformer the blocking is also needed by the TNC, as some (sound cards especially) don't like having a DC bias pushed into them.? Attached is the circuit I've used.? Component values aren't critical, but if the capacitor is too small you won't get good audio through, and if it's too large the rig will go into transmit for a short time while it charges up.? This is the same circuit as was often used on older HTs. Note that the PTT signal is assumed to be some sort of "open collector" drive.? If it's being driven by a modem line, you'll need to add that via an NPN transistor buffer.? 2N2222, 2.2k, 1N4001 for a bit of protection.? See the upper circuit in the diagram. Hope this helps, Greg? KO6TH Rob MW0CQU via groups.io wrote:
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Re: disable ptt function on rear DATA jack in the presence of isolation transformers?
开云体育Sorry skip that…… I just couldn't decipher that on a mobile phone …. So small. There should also be a 2k resistor if the equipment uses and external PTT and does not reply on the high side signal I don’t see that in your drawing. ? If you want to disable PTT then use the TX inhibit lines. If you see the attached image of the Tuner socket then you can use a resistor I believe to tie this TX inhibit to a pull up but you need to ask Andrew Lenton this as ?I believe as it was he that told me about this. I often work remote and when my PC starts up it sometimes pulls RTS or DTR (which one I’m not sure) ?high and puts the radio in TX. I?wanted this to stop as the radio could be out of band listening to something like AM broadcast etc and certainly didn’t want TX there so came up with the idea of inhibiting the TX with a remote relay and resistor. I went with a different solution I the end as my tuner was always inline unless using the CAT connection. ? Sorry for the mixup but I’ve been reading another thread and couldn’t quite get my head around something. ? Hope this helps as the TX inhibit can easily be sequenced to enable and disable. De Spence G5STO Sent while portable! please excuse typos. On 5 Jan 2025, at 16:40, Spencer Tomlinson <unavailable.equal@...> wrote:
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Re: disable ptt function on rear DATA jack in the presence of isolation transformers?
开云体育I don’t see a 10uf capacitor in the FSK out lines?De Spence G5STO Sent while portable! please excuse typos. On 5 Jan 2025, at 14:19, Rob MW0CQU via groups.io <mw0cqu@...> wrote:
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disable ptt function on rear DATA jack in the presence of isolation transformers?
Afternoon all ,?
Checking my understanding of a perceived challenge here with you all: before buying the bits and prototyping a cable...? It seems that plugging the 847's rear 3.5mm data jack into anything with audio isolation transformers at the far end (thereby effectively dc grounding the tip of the 3.5mm plug) forces the rig into constant TX irrespective of any remote PTT settings (correct?)? And therefore, interfaces like the SCU-17 which feature such isolation, require something like a 10nF blocking cap (depicted as C-BLOCK --||-- below) like (hope this scales) : RIG END? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? PC INTERFACE END ? ? ? ? ? ?|----------------------------------------| TIP |RING|EARTH|------------------|EARTH|RING|TIP| ?|----------------------||-----------------------------| ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?C-BLOCK inline to stop this constant PTT (correct?)? is there any other way (I cannot see one in the menu?) to disable that data port PTT without rig surgery ? many thanks and 73 de 'CQU |
Re: TX power meter in HF AFSK data mode mode ??
thanks Greg.
I figured that would be the case as effectively its still SSB just via a different pathway, but always better to confirm with others. audio is DEFINITELY getting to the rear of the 847 but for some reason not getting into the TX stage? At least I now know that I should expect to see "something" and can start looking inside? 73 de CQU |
Re: TX power meter in HF AFSK data mode mode ??
开云体育If it's actually going into transmit, I'd check your audio path.? The meter should deflect at least a little, showing the transmit power.Greg? KO6TH Rob MW0CQU via groups.io wrote:
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TX power meter in HF AFSK data mode mode ??
Hi All,
A dumb question perhaps on the surface, but when transmitting AFSK data via the rear port of the 847 And not using CAT mode for PTT (as I gather CAT mode expects mic audio through the mic socket not? the rear port) should I actually be seeing RF power going out on the wattmeter ? or just the? [USB] [CAT] and [DATA] indicators please ? set up is? Xubuntu desktop---scu17---FT847 {Hamlib} Tuner unplugged (tick in the box)? * CAT function is working tuning the rig fine * SCU-17 getting audio to the linux PC * SCU-17 is pushing audio from linux to the 847 (verified with a double headphone adapter, and headphones . Good levels (can nearly blow my ears off)? PC to radio. * PTT is keying, [USB][DATA] indicators turns on, but nothing deflecting the wattmeter even with the SCU-16 volume level at MAX , and no replies to my CQ's ;-)? have I missed a setting perhaps?, a rig fault ? or some other overlooked factor ?? Many thanks in advance de CQU |
Re: FT847 Data Problem
Yes I can hear FT8 tones through the speaker if I turn volume up.
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If I turn on MONI I can hear my TX tones too. There is just NIL on RX 73 Pete G4RRM -----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Greg D via groups.io Sent: 19 December 2024 03:50 To: [email protected] Subject: Re: [YaesuFT847] FT847 Data Problem Ok, yeah, puzzled here too.? You might try picking the receive audio off the DIN connector (packet, pins 5 & 2) just to see if it's present there.? That might help isolate what's happening.? I assume if you turn up the audio you can hear it in the radio's speaker. Separately, I'm puzzled how you're getting good transmit audio when keying the rig with CAT.? You must also be keying with RTS or similar via the Data port, or are blasting the audio through (speaker-level). In my measurements, there's something like 20db loss when feeding the audio in from the back, and keying the rig from CAT. Greg? KO6TH G4RRM Pete via groups.io wrote: Hi Greg |
Re: FT847 Data Problem
Ok, yeah, puzzled here too.? You might try picking the receive audio off the DIN connector (packet, pins 5 & 2) just to see if it's present there.? That might help isolate what's happening.? I assume if you turn up the audio you can hear it in the radio's speaker.
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Separately, I'm puzzled how you're getting good transmit audio when keying the rig with CAT.? You must also be keying with RTS or similar via the Data port, or are blasting the audio through (speaker-level).? In my measurements, there's something like 20db loss when feeding the audio in from the back, and keying the rig from CAT. Greg? KO6TH G4RRM Pete via groups.io wrote: Hi Greg |
Re: FT847 Data Problem
Hi Greg
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Yes use CAT and the PTT test function in WSJT worked (red) and the radio Tx's (ssb-data) My TX works its the lack of ANY rx that's the issue. As I said in my mail, I have swapped the FT5000 onto the port I use on the interface for VHF and all works fine, so my assumption is the PC > Interface >Ft5000 is fine on either port of the interface, so the problem is in the lead (which I have replaced with no luck) or the data jack on the FT847, There has been no hardware changes since day 1 set up of FT8 on 2m and all worked until recently. I cant help thinking something has gone wrong on the data jack port, it all seems to point to that, anyone had similar problem? Stumped! 73 Pete G4RRM -----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Greg D via groups.io Sent: 18 December 2024 18:07 To: [email protected] Subject: Re: [YaesuFT847] FT847 Data Problem Audio routing on the 847 is fixed, so a grayed-out config button is correct.? Receive audio goes to all the ports (Data, DIN, and the speaker), but transmit audio source is dependent on the mode and where PTT is triggered from.? SSB transmit audio comes from the Data jack; FM transmit audio comes from the DIN connector.? If you key the rig from CAT, the transmit audio comes from the mike connector on the front, which is probably the last place it would come from. If your transmit audio went away I would suspect that you weren't in SSB mode, but that shouldn't affect receive.? Sounds to me like a problem on the PC side of things (audio mixer settings). {shrug} Greg? KO6TH G4RRM Pete via groups.io wrote: I looked in the settings of WSJT and see that Transmit Audio Source is |
Re: FT847 Data Problem
Audio routing on the 847 is fixed, so a grayed-out config button is correct.? Receive audio goes to all the ports (Data, DIN, and the speaker), but transmit audio source is dependent on the mode and where PTT is triggered from.? SSB transmit audio comes from the Data jack; FM transmit audio comes from the DIN connector.? If you key the rig from CAT, the transmit audio comes from the mike connector on the front, which is probably the last place it would come from.
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If your transmit audio went away I would suspect that you weren't in SSB mode, but that shouldn't affect receive.? Sounds to me like a problem on the PC side of things (audio mixer settings). {shrug} Greg? KO6TH G4RRM Pete via groups.io wrote: I looked in the settings of WSJT and see that Transmit Audio Source is set to Front/Mic but is greyed out and unable to change to Rear/Data which I would have expected the setting to be. |
FT847 Data Problem
开云体育Hi All ? Thanks for adding me to the group. I have a problem with my FT847 when trying to run FT8 on VHF. ? I have been using the FT847 to run 2m FT8 with a G4ZLP interface into the Data jack on the rear of the radio with no issues for a few years. Recently, the waterfall would occasionally go blank, but then start working again. A few weeks ago it stopped receiving and hasn’t worked since. I suspected the cable, and have replaced with a new one from G4ZLP today. I still cant get any RX on the waterfall. ? I looked in the settings of WSJT and see that Transmit Audio Source is set to Front/Mic but is greyed out and unable to change to Rear/Data which I would have expected the setting to be. I have not changed this setting, and as above, I have used this Cable/rear panel configuration since going on 2m FT8. ? Is it possible that the rear data jack has gone faulty? Should the Transmit Audio Source be set REAR / DATA and if so how when greyed out? ? I have put a wire into the HF Ant port in an attempt to see if it will RX anything, I am HEARING 20m FT8 but not a jot on the waterfall. I have also run HF ?from my FT5000 on the VHF port of the interface and that decodes so I cant see it being the interface at fault. ? Running WSJT-X v2.7.1 rc7 ? Any help is appreciated ? ? 73 Pete G4RRM ? |
Help with Yaesu FT-847 please
Hi all, I have a strange problem with an FT-847 and hopefully someone has seen this before and can help:? I have an FT-847 that works fine EXCEPT for an issue with turning it on or off. I replaced the power switch but the issue I have has nothing to do with that which I was hoping it did. When I connect my power supply to the radio and turn on the power supply without turning on the radio? I can hear what sounds like a relay click in the radio but nothing happens, just the click. Then when I push in the power button to turn the radio ON nothing happens for maybe5-10 seconds and then the radio comes on and works. If I push the power switch to turn the radio OFF then the display still stays lit up, display looks fine but nothing works, no buttons, no changing of frequency with the VFO, it's in a catatonic state. If I push the power switch back in again to turn the radio ON (even though it's all lit up)? then a few seconds later sound and all controls etc come back to life. If I leave the radio on when it's working and turn off the power supply of course the radio shuts off and when I turn the power supply back on when the power button on the radio is in the ON position it starts right away and performs fine.
?Any help appreciated. Thanks, Adam Adam Farber W4AJF Cooper City, FL |