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Yes, You can. "+" sign means electrolytic
Alex LY4SA
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Thanks for the replies. I don't have much experience in tackling these kind of jobs but I do have a connector cable lying around that I used to use to connect a Timewave Navigator with a Kenwood TS-570 a few years ago. I'm going to use this as teh basis for the 847/Ti-3000 cable. Can I use an electrolytic capacitor as a blocking capacitor..??
Andy EI8KF
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That gives me an idea, Greg.? I wonder if I can add the blocking cap and resister to my radio internally between the TRS and the mini-DIN and just use the mini-DIN plug with my rigblaster plug-n-play?
73, Mike - W1MI
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On Tue, Nov 16, 2021 at 07:25 PM, Greg D wrote:
I've not used the RigExpert, but have interfaced a Raspberry Pi to the 847.? The diagram looks good, at least on the 847 side.
The TRS jack is used for the HF (SSB) modes.? As shown in your diagram, the PTT line from the TNC goes through the 2k resistor to the TRS Tip, along with the transmit audio which is passed through the 10uf DC blocking capacitor.? Receive audio from the radio (TRS ring) is a direct connection to the TNC.? Ground / Shield is common to both.
The trick is what is shown in the diagram to parallel the TRS and mini-DIN connectors, giving access to the VHF FM modes as well.? The 847 splits these out, and uses a different interface scheme for the DIN connector, keeping PTT separate from the audio circuit.?
Do note that you cannot use the CAT interface for keying the radio.? The 847, for some bizarre reason, assumes the microphone jack as the source when CAT is keying the rig, instead of either of the rear jacks (TRS or DIN).? If you use CAT, you will find you are able to key the rig, but have no audio transmitted.? I had to use a separate USB-Serial dongle on my Raspberry Pi for PTT, attaching one of its modem control lines (DTR / RTS) through a buffer circuit.? I expect the RigExpert has this built-in, so when configuring your software you need to make use of the RigExpert's PTT feature and not the direct CAT interface.
Hope this helps,
Greg? KO6TH
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Hi... The schematic diagram is 100% working. I have a RigExpert TI-5000 with a selfmade cable using it with my FT-847. I am not using PKT, but all other stuff works just as it should You can ask me if any help is needed or contact directly via e-mail?or messenger
Alex LY4SA
I've not used the RigExpert, but have interfaced a Raspberry Pi to
the 847.? The diagram looks good, at least on the 847 side.
The TRS jack is used for the HF (SSB) modes.? As shown in your
diagram, the PTT line from the TNC goes through the 2k resistor to
the TRS Tip, along with the transmit audio which is passed through
the 10uf DC blocking capacitor.? Receive audio from the radio (TRS
ring) is a direct connection to the TNC.? Ground / Shield is common
to both.
The trick is what is shown in the diagram to parallel the TRS and
mini-DIN connectors, giving access to the VHF FM modes as well.? The
847 splits these out, and uses a different interface scheme for the
DIN connector, keeping PTT separate from the audio circuit.?
Do note that you cannot use the CAT interface for keying the radio.?
The 847, for some bizarre reason, assumes the microphone jack as the
source when CAT is keying the rig, instead of either of the rear
jacks (TRS or DIN).? If you use CAT, you will find you are able to
key the rig, but have no audio transmitted.? I had to use a separate
USB-Serial dongle on my Raspberry Pi for PTT, attaching one of its
modem control lines (DTR / RTS) through a buffer circuit.? I expect
the RigExpert has this built-in, so when configuring your software
you need to make use of the RigExpert's PTT feature and not the
direct CAT interface.
Hope this helps,
Greg? KO6TH
EI8KF wrote:
I recently
bought a RigExpert Ti-3000 to use with my Icom IC-7000 but I'd
also like to use it with my 847. Unfortunately RigExpert don't
make a suitable cable for the 847, no idea why, but they have
given me a diagram explaining how to build one.
Has anyone any experience with building a cable and can explain
how to connect the 3.5mm jack?
|
I've not used the RigExpert, but have interfaced a Raspberry Pi to
the 847.? The diagram looks good, at least on the 847 side.
The TRS jack is used for the HF (SSB) modes.? As shown in your
diagram, the PTT line from the TNC goes through the 2k resistor to
the TRS Tip, along with the transmit audio which is passed through
the 10uf DC blocking capacitor.? Receive audio from the radio (TRS
ring) is a direct connection to the TNC.? Ground / Shield is common
to both.
The trick is what is shown in the diagram to parallel the TRS and
mini-DIN connectors, giving access to the VHF FM modes as well.? The
847 splits these out, and uses a different interface scheme for the
DIN connector, keeping PTT separate from the audio circuit.?
Do note that you cannot use the CAT interface for keying the radio.?
The 847, for some bizarre reason, assumes the microphone jack as the
source when CAT is keying the rig, instead of either of the rear
jacks (TRS or DIN).? If you use CAT, you will find you are able to
key the rig, but have no audio transmitted.? I had to use a separate
USB-Serial dongle on my Raspberry Pi for PTT, attaching one of its
modem control lines (DTR / RTS) through a buffer circuit.? I expect
the RigExpert has this built-in, so when configuring your software
you need to make use of the RigExpert's PTT feature and not the
direct CAT interface.
Hope this helps,
Greg? KO6TH
EI8KF wrote:
toggle quoted message
Show quoted text
I recently
bought a RigExpert Ti-3000 to use with my Icom IC-7000 but I'd
also like to use it with my 847. Unfortunately RigExpert don't
make a suitable cable for the 847, no idea why, but they have
given me a diagram explaining how to build one.
Has anyone any experience with building a cable and can explain
how to connect the 3.5mm jack?
|
I recently bought a RigExpert Ti-3000 to use with my Icom IC-7000 but I'd also like to use it with my 847. Unfortunately RigExpert don't make a suitable cable for the 847, no idea why, but they have given me a diagram explaining how to build one.
Has anyone any experience with building a cable and can explain how to connect the 3.5mm jack?
|
In message <CAKi7SJHkXAA4HSgMFXCaX9op62+t8uXsNkQdne1gbnc=S=O-5w@...>, Hal Dale <wb4aeg@...> writes Bought my 847 new in in the 90's I think.. I love it....It's a early
model....On air all most daily...Hal/WB4AEG
On Tue, Nov 2, 2021 at 10:14 AM Rob <g4ujs@...> wrote:
This list has 158 members....and super quiet, I guess 158 people
totally happy with their FT-847's
I am
73 de Rob G4UJS I got mine 2nd hand in the late 90s. I've just fired it up on 4m for a sked. I only really use it for 4m and 6m these days and as a 432 MHz IF for 13cm and 9cm. I do use it for general coverage receive on SW and VHF/UHF. Some day I'll get it back onto TopBand, which is the only SW band I'm interested in. The only faults I've had are the notorious on/off switch, the CW key socket coming loose off the board and a 21MHz fault due to a blown band switch diode. I did the high power capacitor mod for 4m while I was fixing that one. I also replaced the hard wired battery with a holder too. Brian GM4DIJ -- Brian Howie
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Re: International Space Station (ISS)
Hi Rob,
Good question! It’s a great rig but as you know it’s also older technology. Personally, I would start with the user’s manual. It has a pretty complete description of how to use the FT847 in satellite mode. I would print out the pages in the satellite chapter and probably also the chapter on memory operation if you haven’t used the memory functions so that you have the info in front of you as you set up the rig. If you don’t have a manual let me know via email (either call is good in QRZ) and I can send you a pdf. My mint condition 847 is retired and sitting on a shelf as a backup rig now that I have the 7300/9700 pair so once you get the basic set up going someone else who is actively using the rig may be in a better position to assist you with any tweaks that my be helpful specifically for the ISS. Good luck working the “birds” and cheers from an American ham of 58 years living in France.
Rob ?W2RSB | F4WCM
Rob Burke 137 bd de la République 92420 Vaucresson FRANCE Mobile: +33 (0)6 30 33 18 48 eMail: robinsburke@...
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Re: International Space Station (ISS)
On Thu, Nov 11, 2021 at 03:34 AM, Rob wrote:
Any guidance would be appreciated.
HI "Yes for all"... ;-) Check here for the pdf FT847 manual /g/YaesuFT847/files73
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International Space Station (ISS)
Hi
I've never used the satellite facility on the FT-847.
How does one set it up to work through the FM Repeater on the ISS. Is it possible to save the CTCSS Tone on the uplink?
Any guidance would be appreciated.
Regards
Rob G4UJS
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Hello 847’rs
Got mine in lock down Nov 20’ after being QRT for 20 years, the guy who owned it before me, used it for listening never used on TX. Like some of the 847 ‘rs on this thread my interest is satellite op’s, but have recently stumbled upon FT8 so the mods and
hacs discussed here will come in handy. Many thanks?
73’
Paul
GW4ZYG
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On 4 Nov 2021, at 12:17, Michael Luft <milu111@...> wrote:
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Well my post certainly brought a few of you out of the wood work!
I love my 847, I have only recently bought it, mint condition and looking at it I cant believe it was designed over 20 years ago as it looks very modern to my old eyes.
Getting FT8 working was a pain but it works great now thanks to help from this group.
73 de Rob G4UJS
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Bought new, used regularly, but I'm not tempting providence by saying anything else.
73 de VK6CR
On Tue, Nov 2, 2021, at 22:14, Rob wrote:
This list has 158 members....and super quiet, I guess 158 people totally happy with their FT-847's
I am
73 de Rob G4UJS
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I got mine a couple of years back and the only problem I have is that it needs an alignment. The display is off frequency 50 - 500 hz depending on the band. I've just learned to live with it and keep a notebook to remind me how much it is off on each band. It seems that none of the folks that work on these here in the US are accepting any new work. I just don't have the equipment to do the procedure myself and Yeasu won't do it anymore. (I have an equally old "I" brand that they were happy to do it for their radios.)? I like having buttons and switches over menus to control the rig.?
The big problem is not enought time to use it here lately. Too much work not enough play time....
Carey
W4TFZ
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I just got mine a few months ago.
My best friend (now SK) had one and used it for sattelite work.
I would like to use mine with JTDX but am having difficulty with rig control.
Since I bought it, I have used it for repeater work (over 100 miles away) as well as VHF/UHF contests. Works great with amplifiers.
Micky K1XH
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On 2021-11-02 05:25 PM, Joe via groups.io wrote:
I love my FT-847.... ?I've set four AMSAT satellite distance records with it within the last 2 years..... amazing satellite full duplex radio..
?
de Joe. ? KE9AJ?
?
On Nov 2, 2021, at 8:14 AM, Rob <g4ujs@...> wrote:
This list has 158 members....and super quiet, I guess 158 people totally happy with their FT-847's
I am
73 de Rob G4UJS
|
I love my FT-847…. ?I’ve set four AMSAT satellite distance records with it within the last 2 years….. amazing satellite full duplex radio..
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On Nov 2, 2021, at 8:14 AM, Rob <g4ujs@...> wrote:
?This list has 158 members....and super quiet, I guess 158 people totally happy with their FT-847's
I am
73 de Rob G4UJS
|
I use mine daily as my primary shack rig.? Mostly 2m FM, but I work
all the other bands as well.
My gripes with the rig:? One is that the "Fast" button's action is
backwards when using the Band up and down buttons.? I typically have
Fast turned on when spinning the dial, hardly ever needing to get
down to fine adjustments.? Then when I hit the up or down band
buttons, it jumps from HF to VHF, instead of from 80m to 40m.
Also no VOX, but that's only because the operation of CAT with the
digital modes is utterly broken.? When the rig is keyed from CAT,
the audio comes from the Mike input, not the jacks on the back of
the rig.? It seems like they were trying to be "smart" when
selecting the audio source depending on where PTT was keyed (which
itself is brain damaged when one is using a sound card to drive both
HF and Packet modes), but totally ignored that computer-driven modes
can use CAT for PTT.? If it had VOX, and if VOX payed attention to
the back jacks, that would have simplified a lot of wiring in the
shack.
Other than that, a great rig!
Greg? KO6TH
Richard AG5M via groups.io wrote:
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Well, happy for now, no problems. It isn't used all that much
but will get a good amount of workout come Springtime when I
start learning Satellite ops. 73, Richard AG5M
On Tuesday, November 2, 2021, 07:14:47 AM PDT, Rob
<g4ujs@...> wrote:
This list has 158 members....and
super quiet, I guess 158 people totally happy with their
FT-847's
I am
73 de Rob G4UJS
|
Well, happy for now, no problems. It isn't used all that much but will get a good amount of workout come Springtime when I start learning Satellite ops. 73, Richard AG5M
On Tuesday, November 2, 2021, 07:14:47 AM PDT, Rob <g4ujs@...> wrote:
This list has 158 members....and super quiet, I guess 158 people totally happy with their FT-847's
I am
73 de Rob G4UJS
|
Brian Howie GM4DIJ
Frank
Richard AG5M