How can I trigger the Allstar receiver when it gets a voltage from COS or switch 3 on the fob?
Does it automatically trigger when a voltage is there?
I added 5v to the COR URIx and did not get any trigger and I also tried closing SW3 on the home brew fob. Am I doing something wrong?
I will be getting a COS out on my radio and want to use The CTCSS on the radio instead of in AllStar.
Thanks
Skyler
` If things are working well using DSP, then why would you want to
change them up, unless you want to use a slower computer that does
not have the horsepower to do DSP?
In /etc/asterisk/usbradio.conf change the line that currently reads:
�carrierfrom=dsp to read carrierfrom=usb or carrierfrom=usbinvert
The "usb" setting is for COS active HIGH (+5 VDC) and "usbinvert"
is for active LOW, which would pull the line to ground when
active. In the LOW situation, use a volt meter to make sure there
is voltage present to be able to be pulled down. You will also
need to change the line that reads:
ctcssfrom=dsp to ctcssfrom=usb if you have a separate line for
CTCSS detection. Some radios, like the GM300, let you put both the
cos AND ctcss on the same line. In that case, set ctcssfrom=no to
ignore it.
N5ZUA
`
On 3/7/2015 10:11 AM, Skyler F wrote:
How can I trigger the Allstar receiver when it gets avoltage from COS or switch 3 on the fob?
�Does it automatically trigger when a voltage is there?�
I added 5v to the COR�URIx and did not get any trigger andI also tried closing SW3 on the home brew fob. Am I doing
something wrong?
I will be getting a COS�out on my radio and want to use TheCTCSS on the radio instead of in AllStar.
Thanks�
Skyler
--Skyler Fennell
amsatnet.info
KD�WHB
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The URI requires a signal that pulls to ground in either active hi
or low modes. Its not enough to see a voltage go hi or low. The
signal from the radio MUST pull to ground or the URI will not see a
change. If the COS/COR from your radio only sources voltage but
doesn’t pull to ground, then you need to use that line to drive an
NPN transistor. (2N 3904 or 2N2222 will work).
You can put a 4.7 K resistor on the base and connect your radio's
COS to that. Then connect the Emitter pin to ground and the
Collector pin can be connected to your cor line on the URI. Then all
you have to do is set the “Carrierfrom” to either USB or USBinvert
in the USB radio config. This way the cor line from the transistor
collector will pull to ground when the squelch opens in your radio.
Also note that using the transistor will invert your COS/COR signal.
So if you have a voltage that goes high when the squelch opens then
the O/P of your transistor will go low. Then set Carrierfrom to
USBINVERT. (Active low).
Also to test this make sure you have your Ctcssfrom from set to no.
Once you have this working then you can add ctcss gating the same
way. The CTCSS input on the URI also looks for a signal that pulls
to ground. It doesnt care about applying a voltage to the pin.
Both the COR and CTCSS input lines on the URI have internal diodes
to block incoming voltage. Again it only cares if the signal goes to
ground or not.
Hope this helps.
Jon VA3RQ
As it has become more difficult to recover quality COS and CTCSS from (some) radios, here are two solutions - depending on what's required:
http://www.repeater-builder.com/w3kkc/products/squelch/ms25.html
http://www.repeater-builder.com/w3kkc/products/squelch/sc50.html
Both will provide the pull to ground required by a URI or modified FOB. Because the Schottky protection diodes have some voltage drop, and a "valid" signal on the CM108/119 needs to be around 1.0V or less, these boards will provide the necessary logic levels for predicable operation.
Kevin - W3KKC
On 3/7/2015 1:58 PM, REDBUTTON_CTRL wrote:
The URI requires a signal that pulls to ground in either active hi or low modes. Its not enough to see a voltage go hi or low. The signal from the radio MUST pull to ground or the URI will not see a change. If the COS/COR from your radio only sources voltage but doesn't pull to ground, then you need to use that line to drive an NPN transistor. (2N 3904 or 2N2222 will work).
You can put a 4.7 K resistor on the base and connect your radio's COS to that. Then connect the Emitter pin to ground and the Collector pin can be connected to your cor line on the URI. Then all you have to do is set the "Carrierfrom" to either USB or USBinvert in the USB radio config. This way the cor line from the transistor collector will pull to ground when the squelch opens in your radio.Also note that using the transistor will invert your COS/COR signal. So if you have a voltage that goes high when the squelch opens then the O/P of your transistor will go low. Then set Carrierfrom to USBINVERT. (Active low).
Also to test this make sure you have your Ctcssfrom from set to no. Once you have this working then you can add ctcss gating the same way. The CTCSS input on the URI also looks for a signal that pulls to ground. It doesnt care about applying a voltage to the pin.
Both the COR and CTCSS input lines on the URI have internal diodes to block incoming voltage. Again it only cares if the signal goes to ground or not.
Hope this helps.
Jon VA3RQ
On 3/7/2015 11:11 AM, Skyler F wrote:
How can I trigger the Allstar receiver when it gets a voltage from COS or switch 3 on the fob?
Does it automatically trigger when a voltage is there?
I added 5v to the COR URIx and did not get any trigger and I also tried closing SW3 on the home brew fob. Am I doing something wrong?
I will be getting a COS out on my radio and want to use The CTCSS on the radio instead of in AllStar.
Thanks
Skyler