not takers on my first inquiry. I even sent a note to Icom, they may get back to me someday. I know there are some 910 smarties out there.
Hello
I am trying to set up my 910/sequencer/amp. Checking things out before hard wiring everything I discovered when grounding pin 3 of the acc socket the radio does go to xmit, and will do cw, however to send ssb the ptt on the mic has to be pushed. At times I use a Heil head set that has no PTT and I simply push the xmit on the radio. Do I have to pick off the PTT at the mic connector? I am probably overlooking something obvious. What do you 910 experts have to say.
As always, thankyou
73 Bob W7LRD
Hi Bob,
Pin 3 can not be set to only tx on a specific mode BUT it can be set to only tx for a specific band. ( Page 58 of the manual ) I've been right throught the service manual and I cant see any way that your rig would do what it does. My suspicion is that the CPU has tied itself in knots for some reason, thus you might like to do a factory reset of your rig. ( page 18 or page 77 of the user manual )
If you do a reset you will loose all your memories and settings.
I know pin 3 works for all modes since I use it with a buxxcom interface for FSK441 for meteor scatter on 2m USB
regards
Tim
I don't know if this is applicable or not--but---
1) Do you have anything connected to pin 1 of the ACC socket?
Keep in mind that if the audio level on pin 1 is "too high" the PTT doesn't work. This is readily evident when using a TNC where the audio level is too high; the TNC tries to PTT, but the rig won't key.
2) A different thought---maybe the microphone audio is muted when the rear ACC socket is keyed. That is common so as to keep from having a "hot mic" when transmitting via a TNC.
73,
Mark N8MH
At 07:17 AM 1/24/2010 +1100, Tim Tuck wrote:
Hi Bob,
Pin 3 can not be set to only tx on a specific mode BUT it can be set to only tx for a specific band. ( Page 58 of the manual ) I've been right throught the service manual and I cant see any way that your rig would do what it does. My suspicion is that the CPU has tied itself in knots for some reason, thus you might like to do a factory reset of your rig. ( page 18 or page 77 of the user manual )
If you do a reset you will loose all your memories and settings.
I know pin 3 works for all modes since I use it with a buxxcom interface for FSK441 for meteor scatter on 2m USB
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
Hello
I am trying to set up my 910/sequencer/amp. Checking things out before hard wiring everything I discovered when grounding pin 3 of the acc socket the radio does go to xmit, and will do cw,  however to send ssb the ptt on the mic has to be pushed. At times I use a Heil head set that has no PTT and I simply push the xmit on the radio. Do I have to pick off the PTT at the mic connector?  I am probably overlooking something obvious. What do you 910 experts have to say.
As always, thankyou
73 Bob W7LRD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Mark L. Hammond [N8MH]
Hi Bob,
You have to modify the IC-910 for it to work properly with a sequencer. I mounted a 3.5mm stereo socket on the back of the rig at the bottom RH corner at the back (looking at the back). I cut the PTT track coming from the MIC connector going to PIN 6 on the MIC PCB inside the IC-910 at the front. I then wired the "Tip" pin of the 3.5mm socket to the MIC, and the "Ring" of the 3.5mm socket to pin 6. Ground was connected to the shield of the 2 core cable.
This way you "intercept" the PTT from the MIC and send it out the back of the rig via the "Tip" to the Sequencer, and then the TX delayed signal comes back in via the Ring to fire up the Transmitter. When not running the sequencer I just put in a 3.5mm stereo plug into the socket into the back of the rig with the tip and ring bridged.
Some words of caution. NEVER hit the "Transmit" button on the rig. Also, if you plan to hook the 910 up to a TNC, you MUST use the PTT line from the TNC going to PIN 3 of the ACC or Main Data sockets otherwise the rig gets confused about what audio source to use. What I do is send the PTT signal from the TNC to the sequencer first, then the delayed output back to pin 3.
Hope that helps.
73's Allan ZS1LS
-----Original Message----- From: Bob- W7LRD [mailto:w7lrd@comcast.net] Sent: 23 January 2010 04:49 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Fwd: 910/1.2ghz/sequencer
not takers on my first inquiry. I even sent a note to Icom, they may get back to me someday. I know there are some 910 smarties out there.
Hello
I am trying to set up my 910/sequencer/amp. Checking things out before hard wiring everything I discovered when grounding pin 3 of the acc socket the radio does go to xmit, and will do cw, however to send ssb the ptt on the mic has to be pushed. At times I use a Heil head set that has no PTT and I simply push the xmit on the radio. Do I have to pick off the PTT at the mic connector? I am probably overlooking something obvious. What do you 910 experts have to say.
As always, thankyou
73 Bob W7LRD
participants (4)
-
Allan Saul -
Bob- W7LRD -
Mark L. Hammond -
Tim Tuck