On 10/18/2013 10:04 AM, Joe wrote:
On 10/18/2013 9:34 AM, Steve Bosshard (NU5D) wrote:
....Possibly a ground loop between a PC and the radio or something of that nature...
Maybe a good reason not to have the radio on a charger while programming???
Note: You'd want to make sure the battery has a good charge before writing back to the radio, especially for clone mode radios like the Yaesus where most, if not all, of the EEPROM will be overwritten.
A little background, If the voltage drops too low when writing an EEPROM the data stored may not be correct. Most modern and well engineer battery operated systems including current microcontrollers with the EEPROM on the chip will have "brown-out" protection that will prevent writing when the supply voltage is too low.
As far as EEPROM write durability, Ian at DangerousPrototypes.com, built a board to test how many write cycles it would take before an EEPROM started failing. The tested EEPROM rated at a million write cycles, had over 11 million write cycles before a failure occurred.
http://dangerousprototypes.com/2010/06/07/flash-destroyer-dead-at-11-49-mill...