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Next episode: I soldered some wires to MAX202 pins going directly to the CPU. I then connected a TTL/USB serial converter to these wires and were able to go into the menu of the TT4 and here it is, no

You can use the MONITOR command, it will display numerical values of the input audio level. -- ___________________________________________________________ Geoffrey F4FXL / KC3FRA My Tinytrak Stuff =>

--Thank you for the comebacks, gives me something to go on...I've only been using the TT4BT for about 2 months and all the tech knowledge needed is something I have not any training for. However I am

An interesting write up thanks for sharing it. I recently picked up a TT4 and I agree it would be good to have input level pot. I wonder if the software could display a VU meter of sorts to help with

double checked, it is the correct file.... -- ___________________________________________________________ Geoffrey F4FXL / KC3FRA My Tinytrak Stuff => http://f4fxl.org/tag/tinytrak

Are you sure you are uploading the correct firmware for the chip in the TT4?You posting shows bootloader Version 1.2c: Probably, but just making sure. Robert Giuliano KB8RCO

Ok I managed to upload the firmware. Yet the configuration menu stills outputs garbage. Checked with different USB/Serial adapters, same result... Looks like the serial lines have an issue. --

Allen, I do not know where the reset Pin but after a couple of tries I managed to enter the boot loader. There are some garbage characters being sent. Hitting v to get the version only returns

Everything you ever wanted to know about vehicle wiring for Ham and more! http://www.k0bg.com/wiring.html

Allen, et al, Thanks for all the great information. Lots to digest. I will disconnect the GPS and see if there is an improvement. I do not recall the coax and GPS being close though. Good to know on

Geoff, When you send the "B" while trying to enter the bootloader, what does the terminal screen show? Continuous dots? Anything? It can be difficult to catch the bootloader when you do a reset by

Hi Group, I got my hands on this bricked TT4. The person who gave it to me said it was exhibiting erratic behavior (bad decoding, not transmitting). At some point he tried to upgrade the firmware, and

Hi All, Following topic drifted to a discussion about audio levels /g/TinyTrak/topic/95670230#1649 In order to not highjack the topic any longer I start a new one. The topic above

Allen, I think we are more or less saying the same thing and at the same time saying different things. You are talking about the noise in the audio chain of the receiver, whereas I was more focusing

I noticed that the two units I got shipped with “test xx” as ID and when powered it will make transmissions with these fake setup accounts thus making an emission illegally I didn’t intend. a

https://owenduffy.net/blog/?p=2035 /g/VARA-MODEM/message/1390 some links to share hope they help. As Geoffrey mentioned might mess around with audio output. kelly

If it is a question of decodability, it's largely a question of signal to noise ratios. Noise always increases with gain, so setting your volume to "11" is not a good thing, as it lowers signal to

Your customer base wonders the same things Allen

Allen, it is a bad practice to keep the wanted signal as low as possible, in contrary to make it immune to noise you should krank it up all the way that the system can process, in this case 800mV. I

Nice to see there are more and more people following my instructions for Bluetooth :) Regarding the audio level, I once analyzed the TT4 schematic and found out that the best audio levels for proper