[aprssig] Roadtrip APRS Full DUplex

Scott Miller scott at opentrac.org
Tue May 15 11:44:57 EDT 2018

I'm afraid not - it was going to be cutting things too close to try to 
get it into production in time to make the trip to Dayton worthwhile, 
and there's some stuff I really need to be here for.


On 5/15/2018 5:43 AM, Jeff Davis wrote:
> Will you be at Dayton and taking orders this week?
> 73, Jeff KE9V
> On May 14, 2018, at 05:22 PM, Scott Miller <scott at opentrac.org> wrote:
>> The upcoming Tracker4 has voice beacon capabilities - you can set up a
>> script to play WAV files from its internal flash memory.  If you need it
>> to QSY a radio, you'd probably have to hook up relays to the channel
>> up/down buttons.  I did that many years ago for a fixed station that I
>> needed to have transmit on two different frequencies.
>> Adding relays to the T4 is easy.  It's one of the things I'm testing
>> today on the latest board revision.  This is my test program for a $10
>> quad relay board:
>> ' This program toggles each relay in sequence
>> for a = 1 to 20
>>    for b = 40002 to 40005
>>       modbus_write(1, b, 768)
>>       sleep 50
>>    next b
>> next a
>> Later on I'll be setting it up for reusable code blocks so instead of
>> reading the datasheet to get the addresses and commands, you can just
>> reference an existing module for known devices.  Trying not to get too
>> bogged down in that stuff right now when I just need to get a T3
>> replacement out the door.
>> I updated the T4 photo on the site now that we've got the latest board
>> revision in:
>> https://www.argentdata.com/catalog/product_info.php?products_id=200
>> This board brings back the extra DB9 for serial devices like weather
>> stations.  Unless I find something wrong with the board in the next day,
>> this will be the production version and we should start shipping in 2-3
>> weeks.  The graphics shown aren't necessarily final; I'm still waiting
>> for my graphic artist to get back to me with something more polished,
>> but we can do full color direct digital printing in house now so I can
>> tweak it as much as I want without having to get new silkscreens made.
>> Scott
>> N1VG
>> On 5/14/2018 1:04 PM, Fred Hillhouse wrote:
>>> I haven't seen the Byonics offering.
>>> I did this about 10 years back with the ADS-SR1 Simplex Repeater 
>>> from Argent Data Systems.
>>> https://www.argentdata.com/catalog/product_info.php?products_id=98
>>> Best regards,
>>> Fred N7FMH
>>> -----Original Message-----
>>> From: aprssig [mailto:aprssig-bounces at tapr.org] On Behalf Of Robert 
>>> Bruninga
>>> Sent: Sunday, May 13, 2018 5:00 PM
>>> To: TAPR APRS Mailing List
>>> Subject: [aprssig] Roadtrip APRS Full DUplex
>>> *** trimmed ***
>>> But you still need a 3rd radio for 52! And this year I will be running
>>> AutoCQ on 52. Byonics has made me an auto-CQ'er for the trip toDayton.
>>> It can be set to call a brief CQ once every 3 minutes (or 2 minutes, 
>>> or 1
>>> minute). This gives 52 the same advantage as Voice Alert does for APRS.
>>> On the 1 minute setting it only says my call. On the 3 minute one it 
>>> says
>>> CQ 52 and the call.
>>> The #1 problem with this device if everyone used it is the same as with
>>> nothing more frustrating on Voice Alert than someone pinging away 
>>> with the
>>> volume turned down. Byonics has set a timer that will time out after 30
>>> minutes if there have been no transmissions.
>>> Bob, WB4APR
>>> ---
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