PiRLP Pinout for TK-790

[lrcrabtree]

I'm trying to set up my PiRLP with a Kenwood TK-790 VHF transceiver. These transceivers have a DB-25 connector that has everything you would ever need to connect devises like the PiRLP (headsets, horn relays, etc.). Here is what I've got so far:

PiRLP Pin Kenwood TK-790
1 - No Connection
2 - PTT OUT ???
3 - Aux 1 Out 2 AI1
4 - Aux 2 Out 3 AI2
5 - Aux 3 Out 4 AI3
6 - Ground 18 Earth
7 - COS In 23 Squelch Signal output
8 - Audio In from RX 17 RX audio signal output
9 - Audio Out to TX 13 MIC/data signal input

Does anyone have experience or ideas about this? In particular the PPT OUT from the PiRLP and the Audio Out to TX from the PiRLP? I think the rest of the pinout is correct.

I know that there will probably be some programming changes like activating the external ptt, etc.

Any ideas?

Thanks,

Larry
KJ6QVI
Node 7770 (soon)...

 

[toastycookies]

Does this help?

http://www.repeater-builder.com/kenwood/pdfs/tk-790-service-2001.pdf

 

[lrcrabtree]

Thanks. I have that service manual; however, given the fact that Raspberry Pi and Kenwood use different terminology, I am not sure that I have identified the correct pinout. I see in my initial post it may not have been clear, so let me modify it a little here. My main question is regarding the Microphone pinout(s)?

PiRLP Pin => Kenwood TK-790
1 - No Connection => No Connection
2 - PTT OUT => ???
3 - Aux 1 Out => 2 - AI1 (Aux In 1)
4 - Aux 2 Out => 3 - AI2 (Aux In 2)
5 - Aux 3 Out => 4 - AI3 (Aux In 3)
6 - Ground => 18 - Earth
7 - COS In => 23 - Squelch Signal output
8 - Audio In from RX => 17 - RX audio signal output
9 - Audio Out to TX => 13 - MIC/data signal input

 

[toastycookies]

 

[kayn1n32008]

Thanks. I have that service manual; however, given the fact that Raspberry Pi and Kenwood use different terminology, I am not sure that I have identified the correct pinout. I see in my initial post it may not have been clear, so let me modify it a little here. My main question is regarding the Microphone pinout(s)?

PiRLP Pin => Kenwood TK-790
1 - No Connection => No Connection
2 - PTT OUT => ???
3 - Aux 1 Out => 2 - AI1 (Aux In 1)
4 - Aux 2 Out => 3 - AI2 (Aux In 2)
5 - Aux 3 Out => 4 - AI3 (Aux In 3)
6 - Ground => 18 - Earth
7 - COS In => 23 - Squelch Signal output
8 - Audio In from RX => 17 - RX audio signal output
9 - Audio Out to TX => 13 - MIC/data signal input

You need to set, under edit-> Function Port.

On the 'Input' tab Select 'Ext PTT' in the drop down menu next to 'Radio 1 AI1' (or AI2 or AI3 or AI4, or AI5)

If you intend to use PL(QT/DQT) on transmit, you need to enable QT/DQT on EXT PTT.

Under Edit-> Optional Features-> Optional Features 1

Make sure there are check boxes next to both:

'EXT PTT w/QT/DQT'
'EXT PTT w/Squelch Tail Eliminator'
If you have a microphone attached to the radio, you will also want to make sure 'EXT w/MIC MUTE is also selected.cthis wail mute the mic in the microphone when the node keys the radio. If you do not have a. IC attached, do not worry about this setting.

In your diagram the three AUX in and three Aux Out pins should NOT be connected.

 

[kayn1n32008]

He is connecting the node to the DB-25, not the mic connector.