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I have a 847 that had been
working fine until I started tinkering with the DATA IN/OUT jack
trying to interface a computer.? Now when I turn power on it is
in TX continually and cannot get it out? Nothing but DC power
and antenna connected.? Think something got blown on that
circuit.? Unable to make any changes. Anyone every working in
that area.? 73 Mike K4PI
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You didn't by any chance bump the MOX switch on the front?
Greg? KO6TH
K4PI via groups.io wrote:
toggle quoted message
Show quoted text
I have a 847 that had been
working fine until I started tinkering with the DATA IN/OUT
jack trying to interface a computer.? Now when I turn power on
it is in TX continually and cannot get it out? Nothing but DC
power and antenna connected.? Think something got blown on
that circuit.? Unable to make any changes. Anyone every
working in that area.? 73 Mike K4PI
|
Check to insure the MOX?button is not pushed in.? ?The MOX button is right under the power switch, easy to push by mistake.
73,
Tom K6EU
You didn't by any chance bump the MOX switch on the front?
Greg? KO6TH
K4PI via wrote:
I have a 847 that had been
working fine until I started tinkering with the DATA IN/OUT
jack trying to interface a computer.? Now when I turn power on
it is in TX continually and cannot get it out? Nothing but DC
power and antenna connected.? Think something got blown on
that circuit.? Unable to make any changes. Anyone every
working in that area.? 73 Mike K4PI
|
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
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I've used my FT-847 on both 6 and 2M, no problem.? Just used the sample interface circuit in the manual.??
73,
Tom K6EU
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
|
This is what have been using for the last 25 years with the FT-847 with various data modes in both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no problem.? Just used the sample interface circuit in the manual.??
73,
Tom K6EU
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
|
Hi Ian, that’s a beautiful circuit and could only be improved by replacing the 2N2222 with a 4N33.
De Spence G5STO
Sent while portable! please excuse typos.
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Show quoted text
On 6 Jun 2024, at 15:42, Ian M via groups.io <nightflyian@...> wrote:
? This is what have been using for the last 25 years with the FT-847 with various data modes in both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no problem.? Just used the sample interface circuit in the manual.??
73,
Tom K6EU
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
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Quite agree this would be an improvement.? I used a 4N25 optocoupler on my FT-100 interface (that has a slightly different configuration) and still use it today with the FT817
Built several of these over?the years for myself and friends each one more nearer than the previous one.?
It works both for SSB and FM and doesn't affect the CAT interface if you are not using the matching FC-20 auto atu.?
On Thu, 6 Jun 2024, 15:53 Spence G5STO via , <unavailable.equal= [email protected]> wrote: Hi Ian, that’s a beautiful circuit and could only be improved by replacing the 2N2222 with a 4N33.
De Spence G5STO
Sent while portable! please excuse typos. ? This is what have been using for the last 25 years with the FT-847 with various data modes in both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no problem.? Just used the sample interface circuit in the manual.??
73,
Tom K6EU
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
|
Nice circuit, but it's slightly cropped.? The two plugs on the
right...? The top one goes to the TRS Data I/O port; where does the
lower one go, and what is the rest of the "USE THIS F..." text??
Seems to be important...
Greg? KO6TH
Ian M via groups.io wrote:
toggle quoted message
Show quoted text
This is what have been using for the last 25
years with the FT-847 with various data modes in both SSB
& FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who
co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no
problem.? Just used the sample interface circuit in the
manual.??
73,
Tom K6EU
MAN, you guys are good
!!!!..? Very obvious thing overlooked. HI.? All good
now.? I had schematics out last night trying to figure
out what components could be bad.? You made my day.? Any
of you using something for FT8?? I had it receiving FT8
through the DATA IN/OUT plug but was trying to get
transmit working.? I notice there was a claim that the
DATA IN/OUT only worked on HF and I wanted it for 6 M.
Probably have to go into mic jack for that and PTT.? Any
units on the market that do that?? Have not looked.? 73
Mike K4PI
|
Hopefully this version is uncropped as I did the previous version from my phone.
Nice circuit, but it's slightly cropped.? The two plugs on the
right...? The top one goes to the TRS Data I/O port; where does the
lower one go, and what is the rest of the "USE THIS F..." text??
Seems to be important...
Greg? KO6TH
Ian M via wrote:
This is what have been using for the last 25
years with the FT-847 with various data modes in both SSB
& FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who
co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no
problem.? Just used the sample interface circuit in the
manual.??
73,
Tom K6EU
MAN, you guys are good
!!!!..? Very obvious thing overlooked. HI.? All good
now.? I had schematics out last night trying to figure
out what components could be bad.? You made my day.? Any
of you using something for FT8?? I had it receiving FT8
through the DATA IN/OUT plug but was trying to get
transmit working.? I notice there was a claim that the
DATA IN/OUT only worked on HF and I wanted it for 6 M.
Probably have to go into mic jack for that and PTT.? Any
units on the market that do that?? Have not looked.? 73
Mike K4PI
|
Ah, that's much better.
So, a question:? With that bottom right connector going to the
external speaker jack, the audio input to the computer's sound card
becomes dependent on the volume setting on the front panel which is
annoying and prone to error.? I presume it also interrupts the
internal speaker, so can't simply be left in.?
Is it needed?
Greg? KO6TH
Ian M via groups.io wrote:
toggle quoted message
Show quoted text
Hopefully this version is uncropped as I did the previous
version from my phone.
Nice circuit, but it's slightly
cropped.? The two plugs on the right...? The top one goes to
the TRS Data I/O port; where does the lower one go, and what
is the rest of the "USE THIS F..." text?? Seems to be
important...
Greg? KO6TH
Ian M via wrote:
This is what have been using for the last
25 years with the FT-847 with various data modes in
both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber
N7CXI who co-wrote W95SSTV which it was initially
designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M,
no problem.? Just used the sample interface circuit
in the manual.??
73,
Tom K6EU
MAN, you
guys are good !!!!..? Very obvious thing
overlooked. HI.? All good now.? I had schematics
out last night trying to figure out what
components could be bad.? You made my day.? Any
of you using something for FT8?? I had it
receiving FT8 through the DATA IN/OUT plug but
was trying to get transmit working.? I notice
there was a claim that the DATA IN/OUT only
worked on HF and I wanted it for 6 M. Probably
have to go into mic jack for that and PTT.? Any
units on the market that do that?? Have not
looked.? 73 Mike K4PI
|
I never use this plug into the extension speaker socket.?
It not needed if you use the mic input on the PC or laptop and use the amp on the soundcard to boost the signal get the desired input level.?
I think was designed for soundcard interfaces that have low level input line-in only. ?
73 de Ian G8ZHC
Ah, that's much better.
So, a question:? With that bottom right connector going to the
external speaker jack, the audio input to the computer's sound card
becomes dependent on the volume setting on the front panel which is
annoying and prone to error.? I presume it also interrupts the
internal speaker, so can't simply be left in.?
Is it needed?
Greg? KO6TH
Ian M via wrote:
Hopefully this version is uncropped as I did the previous
version from my phone.
Nice circuit, but it's slightly
cropped.? The two plugs on the right...? The top one goes to
the TRS Data I/O port; where does the lower one go, and what
is the rest of the "USE THIS F..." text?? Seems to be
important...
Greg? KO6TH
Ian M via wrote:
This is what have been using for the last
25 years with the FT-847 with various data modes in
both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber
N7CXI who co-wrote W95SSTV which it was initially
designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M,
no problem.? Just used the sample interface circuit
in the manual.??
73,
Tom K6EU
MAN, you
guys are good !!!!..? Very obvious thing
overlooked. HI.? All good now.? I had schematics
out last night trying to figure out what
components could be bad.? You made my day.? Any
of you using something for FT8?? I had it
receiving FT8 through the DATA IN/OUT plug but
was trying to get transmit working.? I notice
there was a claim that the DATA IN/OUT only
worked on HF and I wanted it for 6 M. Probably
have to go into mic jack for that and PTT.? Any
units on the market that do that?? Have not
looked.? 73 Mike K4PI
|
Ian M
Spence G5STO