I have an intermittent, annoying behaviour that I'm trying to diagnose. I've got the picpac attached to a Yaesu VX-5, with the 2.2K resistor in the connector....
BTW, I have just finished up a bunch of perl code to decod MIC-E packets (for a different project). If someone would like to take it as a model for a picpac...
I have fixed this: it appears that the VX-5 wants a fairly large cap (10 uF) on the MIC line. I don't know a lot about the specifics of a TNC interface, but...
I also have a VX5R which I connect to my PICPAC for ARDF practice. I drive the VX5R from the tone from the MX614. I find that the output of the chip is...
... I've adjusted the picpac's drive pot to about 60% of travel. That seems to work OK. ... Not obviously, but I haven't done real measurements. The problem...
... today ... it ... out ... Make sure you have RX Save turned off. You need this disabled for all APRS type digital traffic. That's Menu Item #14 73 Gavin ...
... Thanks, I had actually remembered that this time. Turns out that I had added to improve the energy detect performance of the MX614 had gotten tweaked and...
I've been running the pic-trak code on my commute for a few days now. I can't seem to get they waypointing feature to work the way I want - I have selected a...
... and ... I am looking to improve the receive performance of my PICPACs and thought I might go down a similar route... it then struck me that the bypass...
Gavin, Below is a list of the hardware changes I've made to my PicPac. I have no idea how these changes would affect anyone else's PicPac (proceed at your own...
Mark, A bad day for my experiments yesterday... I seem to have periodic resets/hangs of the PIC... I think the power supply is my next target for further...
Hi Mark, here's another data point in this saga -- I implemented these changes (except for (1) and for (5) used a 10uf cap instead of 100uf) in hopes of...
Gavin, I added the two caps the the ceramic reonator becuase I was at that point in time taking wild stabs in the dark trying to find the cause of my energy...
More experimentation this evening... I set up my TNC-X next to my PICPAC and then took another PICPAC for a walk. The TNX-X and 1st PICPAC had identical...
1200 baud works. Get a copy of the MX614 data sheet from the web (just google for it). I finally got mine to work more or less reliably - one of the things...
... The MX614 is a bell 202 modem. It's 1200 baud only. http://www.datasheetarchive.com/datasheet/pdf/11/115288.html (the download button is at the very bottom...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the picpac group. File : /picpac_mods.gif...
picpac@yahoogroups.com
Jun 1, 2005 9:16 pm
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I'm getting pretty good results now... I have modified the power supply to have 100uF Electrolytic as C8 and a .33uF Tant as C9. This seems to give a nice...
Hi, Im collecting parts to build a pic based packet box (probably like yours). I was just noticing your comments about audio levels. I have not plugged in my...
Just for info, I have a couple pictures in the Photos Section of the case I milled and used for my PICPAC. Its an off-the-shelf RadioShack metal project box....
hi, it will depend on the reciver , some reciever have limiter , some other did not have limiter,. will be easier if you yuse capacitor 10uf/16v. and 50K vr it...
Hello, I am new to the list and my major interest is about getting a good piece of C code that performs decent decoding in order to base subsequent projects on...
The PICPAC decode2/pptest2.c is a good starting point to be found in the documentation/sample code zip at http://www.byonics.com/picpac/ The hardware in a...
... wrote: I've been comparing Apples and Oranges... U3 seems to be a SPI type configuration... I need either a 25xxxx series FRAM or a SPI EEPROM......
Hi Matteo, You are also welcome to convert my code at www.garydion.com under the WhereAVR link. It doesn't share the same hardware as the picpac or TNC-X as I...
Sorry for the OT post, but Gary, that Video overlay is SLICK! Would you be willing to sell an assembled and tested unit? I've been looking for something like...
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