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Tm 700


 

Hi guys
Looking to hook on a Dinah v4 board onto my tm 700 it should be here any day now. Is there any jumpers I have to cut or add


 

¿ªÔÆÌåÓý

Hello Radiotech:

If you mean the TM-D700, it works fine with a DINAH out-of-the-box, assuming you want 1200 baud output from the radio, pin 4, not 9600 on pin 5. There is a jumper to change that behavior, but I do the same thing through an external cable that was wired so that pin 4 crosses over to pin 5 on the cable itself.

I am using a TM-D700A and a DINAH for an Allstarlink remote base radio.

The only thing I don't like is that you can't change the logic behind what the data port does with squelch. If you use the 9600 baud output, which provides discriminator for audio coming from the radio, CTCSS decoding doesn't work at all. It might as well not be on.

If you use the 1200 baud output on pin4, COS will still open with carrier. So, if CTCSS is on and the wrong or no tone is passed, COS will happen, but there will be no audio. You can change the behavior on other radios, like the TM-V71A, such that COS follows squelch rather than carrier, or BUSY as the TM-V71A calls it, but not on the D700A, at least without hardware mods. BTW, if anyone has done a hardware mod to change this behavior of a D700A, I'd love to hear from you.


Also, if you plan on using it with HamVoIP/ASL in linktolink configuration, I've discovered that it still sends COS even when it is transmitting. So I have an in-line board with a relay that cuts COS off when something is sent to the radio from the network. This, too, is not a problem with the TM-V71A if you set it to follow squelch.


Other than that, it works well.


73
N2DYI

On 5/18/2024 11:41 PM, Radiotech via groups.io wrote:

Hi guys
Looking to hook on a Dinah v4 board onto my tm 700 it should be here any day now. Is there any jumpers I have to cut or add


 

¿ªÔÆÌåÓý

Thank you?
Yes I¡¯m using a TM-700A
No ctcss using raspberry pi 3B?
Will be for Node 61040

On May 19, 2024, at 5:21?AM, Patrick Perdue <borrisinabox@...> wrote:

?

Hello Radiotech:

If you mean the TM-D700, it works fine with a DINAH out-of-the-box, assuming you want 1200 baud output from the radio, pin 4, not 9600 on pin 5. There is a jumper to change that behavior, but I do the same thing through an external cable that was wired so that pin 4 crosses over to pin 5 on the cable itself.

I am using a TM-D700A and a DINAH for an Allstarlink remote base radio.

The only thing I don't like is that you can't change the logic behind what the data port does with squelch. If you use the 9600 baud output, which provides discriminator for audio coming from the radio, CTCSS decoding doesn't work at all. It might as well not be on.

If you use the 1200 baud output on pin4, COS will still open with carrier. So, if CTCSS is on and the wrong or no tone is passed, COS will happen, but there will be no audio. You can change the behavior on other radios, like the TM-V71A, such that COS follows squelch rather than carrier, or BUSY as the TM-V71A calls it, but not on the D700A, at least without hardware mods. BTW, if anyone has done a hardware mod to change this behavior of a D700A, I'd love to hear from you.


Also, if you plan on using it with HamVoIP/ASL in linktolink configuration, I've discovered that it still sends COS even when it is transmitting. So I have an in-line board with a relay that cuts COS off when something is sent to the radio from the network. This, too, is not a problem with the TM-V71A if you set it to follow squelch.


Other than that, it works well.


73
N2DYI

On 5/18/2024 11:41 PM, Radiotech via groups.io wrote:
Hi guys
Looking to hook on a Dinah v4 board onto my tm 700 it should be here any day now. Is there any jumpers I have to cut or add