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Re: Micro Track AIO reprograming
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Joe, There is no problem replanting the PIC in a TT3 to try to configure it. If I understand your statement about the function of the unit, and it transmits about once per second after powering it on, the most likely problem is high SWR. Typically, this can happen when someone swings the unit around like a cat from it's tail, and the right angle SMA antenna connector breaks internally. Its still screwed to the Pelican case, but the internal connection is broken or intermittent. The easiest test for this is to turn the PWR ( power) control trimmer all the way off (CCW) which will prevent the amplifier from making enough power to make the unit reset due to excessive SWR. If you measure across the center conductor of the SMA connector to it's ground shield, you should see a 10K resistance. This is the static bleeder resistor there to protect the MOSFET amplifier.? I, like many others, am actively working to sell my home and defect from California to the Midwest. If you don't mind waiting until I have an address for you to send the unit in my new location, I will be happy to test your AIO when my shop gear catches up to me in March.? 73, Allen AF6OF
On Wednesday, January 24, 2024 at 08:03:38 AM PST, Joe N7IV <ferrara@...> wrote:
Allen,
Thanks for the great advice!? That all made sense.? I downloaded (and installed) the proper driver and program from Byonics.? Then I wiggled/pushed the plug quite a bit.? Still no joy.??
This unit was bought by one of our club members (W0OVX) at a hamfest and when Bob couldn't make it play, he donated it to one of our club's silent auctions.? ?John (AB0KZ) bought it.? He couldn't make it play and brought it to me for a cure.? YIKES!?
I'm beginning to wonder if its sickness might require more than reprograming.? When turned on, it transmits cyclically every second (or so).? When I used the scope on my IC-9700 to look at its signal, I found that it's not transmitting an APRS packet at all.? It just keys the transmitter, generates a wide key-click, returns to receive, and repeats.? So, I'm thinking that it may be more than a programming and communication issue.? In any case, it didn't work.
Unless you tell me it's a dumb idea, I'm going to pull the chip from the unit and drop it into an unused TT3.? Then I'll connect the TT3 and read the chip using my standard com port/null modem to see if the chip is the root of all evil.? At the very least, I can make sure that it's programmed properly and then attack any remaining problems.?
Best Wishes and thanks for your help... Like I said, you made sense!
Joe, N7IV? ? ? On Tue, 23 Jan, 2024 at 5:02 PM, vhsproducts via groups.io <vhsproducts@...> wrote: ? Joe, You cannot program the MT-AIO with a terminal program; you will need to use the TT3 config program:?? Also, you will need to download and install the Prolifics USB Drivers from the Byonics website to use that USB programming cable. Other Prolifics drivers, and Windows Versions older than 10 may require a great deal of heartache and tears. One of the most common difficulties with configuring the AIO is that the serial jack's on units that have not been used a fair bit, may be very tight. Make sure you push the plug in firmly, even having the plug a tiny bit out of battery can deny your serial connection. 73, Allen AF6OF
On Tuesday, January 23, 2024 at 02:53:58 PM PST, Joe N7IV <ferrara@...> wrote:
I¡¯m working with an older version of the micro trak AIO (version 1.4.4 on circuit board) trying to change the callsign in its program using ¡°Real Term,¡± and I have a failure to communicate.?
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