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Icom IC-F6011 Repeater Programming

KD5FMU

Ham Radio Crusader
Joined
Dec 1, 2007
Messages
17
Location
Henryetta, Oklahoma
To hopefully answer your question, When Pin 3 on the J6 connector of the Receive Radio detects Carrier Operated Squelch (COS) it sends a signal to the Repeater Controller which in turn sends a signal via the PTT line to PIN 11 on the J6 connector of the Transmit Radio to trigger PTT.

Audio out of the Receive Radio PIN 7 of the J6 connector will go to the Repeater Controller will go to the Receive Audio Input to the Repeater Controller. I know it's a little confusing but here is how I remember it. Audio comes out of the RX radio and into (input) the Repeater controller. Maybe this diagram will help.
 

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  • Controller TO Icom Radios.pdf
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KD2DES

Member
Joined
Nov 12, 2023
Messages
24
Location
New York, NY
To hopefully answer your question, When Pin 3 on the J6 connector of the Receive Radio detects Carrier Operated Squelch (COS) it sends a signal to the Repeater Controller which in turn sends a signal via the PTT line to PIN 11 on the J6 connector of the Transmit Radio to trigger PTT.

Audio out of the Receive Radio PIN 7 of the J6 connector will go to the Repeater Controller will go to the Receive Audio Input to the Repeater Controller. I know it's a little confusing but here is how I remember it. Audio comes out of the RX radio and into (input) the Repeater controller. Maybe this diagram will help.
So you are indeed using a controller. That was my very first question. Your diagram makes total sense now, thank you.

My only doubt left is the COS output out of IC-F6011. Pin 3 is the Ext I/O 11. You told me to turn on OPTION > Ext OUT (EXO) Horn > RX EXO. So the horn is the COS??

Thanks again for all your help.
 

KD5FMU

Ham Radio Crusader
Joined
Dec 1, 2007
Messages
17
Location
Henryetta, Oklahoma
Yes! Some volunteer firemen would program the radio to honk their truck horns when they received a 2 tone signal to wake them up at night when they received fire calls.
 

KD2DES

Member
Joined
Nov 12, 2023
Messages
24
Location
New York, NY
To hopefully answer your question, When Pin 3 on the J6 connector of the Receive Radio detects Carrier Operated Squelch (COS) it sends a signal to the Repeater Controller which in turn sends a signal via the PTT line to PIN 11 on the J6 connector of the Transmit Radio to trigger PTT.

Audio out of the Receive Radio PIN 7 of the J6 connector will go to the Repeater Controller will go to the Receive Audio Input to the Repeater Controller. I know it's a little confusing but here is how I remember it. Audio comes out of the RX radio and into (input) the Repeater controller. Maybe this diagram will help.
Looking at your nice drawing (thank you for that), could we connect discriminator audio output from the RX radio directly into the IN input of the TX radio? Or must it go through the repeater controller? If so, what is the controller doing with the audio? Thanks.
 

KD5FMU

Ham Radio Crusader
Joined
Dec 1, 2007
Messages
17
Location
Henryetta, Oklahoma
Looking at your nice drawing (thank you for that), could we connect discriminator audio output from the RX radio directly into the IN input of the TX radio? Or must it go through the repeater controller? If so, what is the controller doing with the audio? Thanks.
Well in all reality the controller is just relaying and routing the audio to the transmitter radio. Some more advanced controller's offer audio filtering for audio clarity and they offer a precise timing from the receiver to the transmitter. As well as some controllers offer DTMF control and CW and Voice Repeater Identification. It gives you options if you want them.
Here are a few more diagrams. One is how to directly wire the Transmitter and Receiver for a simple repeater and the squelch tail timing will have to be set in the radio software. The second one is how to directly wire the Transmitter and Receiver together for a Bi-Directional (usually cross-band) repeater.
 

Attachments

  • Icom Bi-Directional Repeater Direct Pinout - No Controller.pdf
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  • Icom Repeater Direct Pinout - No Controller.pdf
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KD2DES

Member
Joined
Nov 12, 2023
Messages
24
Location
New York, NY
Well in all reality the controller is just relaying and routing the audio to the transmitter radio. Some more advanced controller's offer audio filtering for audio clarity and they offer a precise timing from the receiver to the transmitter. As well as some controllers offer DTMF control and CW and Voice Repeater Identification. It gives you options if you want them.
Here are a few more diagrams. One is how to directly wire the Transmitter and Receiver for a simple repeater and the squelch tail timing will have to be set in the radio software. The second one is how to directly wire the Transmitter and Receiver together for a Bi-Directional (usually cross-band) repeater.
Amazing thank you!
 

KD2DES

Member
Joined
Nov 12, 2023
Messages
24
Location
New York, NY
Fred, will you know by any chance what is the connector type or name that comes with the OPC-1939? See photo below. I am trying to find it at Mouser. Thank you.
Well in all reality the controller is just relaying and routing the audio to the transmitter radio. Some more advanced controller's offer audio filtering for audio clarity and they offer a precise timing from the receiver to the transmitter. As well as some controllers offer DTMF control and CW and Voice Repeater Identification. It gives you options if you want them.
Here are a few more diagrams. One is how to directly wire the Transmitter and Receiver for a simple repeater and the squelch tail timing will have to be set in the radio software. The second one is how to directly wire the Transmitter and Receiver together for a Bi-Directional (usually cross-band) repeater.
Fred, will you know by any chance what is the type or name of this 13-pin connector that comes in the OPC-1939? I am trying to find it at Mouser. Thank you.
 

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KD2DES

Member
Joined
Nov 12, 2023
Messages
24
Location
New York, NY
@KD5FMU So I manage to build a repeater with two IC-F6011s by connecting them together without a repeater controller. I used a diagram you once shared with me, where COS goes to EPPT, DISC to IN, GND-GND and that's it. Works very well. However, if someone speaks too loud on the RX frequency the TX radio drops the modulation (not the carrier). It seems as if the DISC saturates the IN. I noticed Icom says the DISC is 1 kOhm impedance, whereas IN is 10 kOhm, not sure if that plays a role. Have any encountered a situation like this? I also used a controller in between the two radios and the controller does regulate the DISC signal to avoid saturation (through a variable potentiometer). Thanks in advance if you or anyone reading this has any clues. 73
 
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