[450] the link

[Bob]

Nice work Dave.




On Mon, May 20, 2013 at 9:29 PM, David McKenzie <k1fsy at vhfwiki.com> wrote:

> John is going to run it by his parents this weekend he said. More progress
> on the hardware, the radio is in sorry shape but the interface appears to
> work. Don't know if some audio filtering is going to be needed or if I can
> fine tune on the OS but i'll need to try Chris' HTX soon since it's already
> set up. As for the PTT inversion logic I just hacked up the source code to
> the svxlink echolink server to PTT via GPIO pin. Here's a pic of the rough
> interface and the "computer".
>
> [image: Inline image 1]
>
>
> On Mon, May 20, 2013 at 9:00 PM, Bob <n1ujs at toast.net> wrote:
>
>> Anyone got a gas tube to donate so we can leave this thing running?
>>
>>
>> On Mon, May 20, 2013 at 5:00 PM, David McKenzie <k1fsy at vhfwiki.com>wrote:
>>
>>> made some progress today with the new link controller. Keying circuit
>>> and audio appear to work fine, however RTS is automatically set HIGH when
>>> the GPIO pin for RTS is set to work as part of the serial port so at the
>>> moment if the software isn't running the interface will be keying the radio
>>> because the software holds RTS low to inhibit tx.
>>>
>>> Bad news is that my HTX-212 doesn't sound like its working so well
>>> anymore, lots of CPU noise on RX and can barely hear the HT through it.
>>> Looks like we will be in need a replacement rig.
>>>
>>> 73s
>>>
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>>>
>>>
>>
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>
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