motorola cdm cross band repeater problem

[JD]

I have a cross band bi directional repeater ,VHF to UHF ,set up using 2 Motorola CDM 750 radios. I also have 2 Selectone ST 804 2 tone encoders wired in so that only a momentary button can be used to set them off for the VHF radio only.

I am using the simple rick audio circuit design to pass the audio from each radio out of the discriminator to the mic hi.

Here is the problem:
When I use the mic and repeater setup UHF receiving and VHF transmitting, everything works fine ,except the ST 804 encoders will not pass the tones. I am feeding tthe tones in on Pin #5 , Flat Transmit Audio on the VHF radio. The Accessory Package Is set to Rick or I20R TX. Should this be set to Paging Encoder and modify a few pins ??

EXT. PTT Audio Source is set to Ext. Mic High in the Accessory Config Tab.

If I change the Ext PTT Audio Source on the VHF radio to Ext MIC & Falt TX, the ST 804 will pass the tones but when I use the repeater, the PL on the VHF does not work, reading is 2235 + - 500 HHZ. It will not open up a VHF radio. However, ,If I use the mic on the VHF , the PL works.

The UHF radio is set as follows:
RX Audio Type: Filtered Audio
Ext. PTT Audio Source Ext Mic Audio.

I have set each radio to the standard Rick setup and they work fine, it is when I get the tones to pass on the VHF radio by changing the Ext PTT Audio Source to Ext MIc & Flat TX , everything works but the PL Transmit tone does not,
then the VHF PL goes a stray.

Thanks.

[Will]

You need the external encoders to be wired into the mic jack or on the local mic and local PTT on the accy connector.
Do not use the flat audio input on the transmitter, it bypasses the transmit speech limiter.

Also you need the audio from the receiver set for FILTERED (NOT discriminator ).

[JD]

Thanks, I thought I should use the Flat audio pin # 5 to feed the tones into because the mic input might attenuate lower tones.