Seller claimed the repeater was removed from operation, and it was labeled 451/456 - so it should be the right one to tune down
The 1st 4 bytes are CC 84 3C 83 if you can compare that to the data your programmer would write.. The target frequencies are 441.350 TX and 456.350 RX I've already removed the chip and installed a socket . I'll consider sending the chip if no other viable solution comes up. I don't know what T band is, unless that's the 470-500 version of the repeater. How would I tell ?? I don't see any particular markings on the chassis or boards that would tell me what exactly I have.. The only thing that might be relevant is a sticker on the RX VCO marked "COM15" _____ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Steve S. Bosshard (NU5D) Sent: Wednesday, November 21, 2007 6:33 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] TKR-820 Reciever Issues If you are up to removing the eeprom from the front panel (soldered in) and mail it to me I will put it in my kpt20 and verify operation - I have never run into trouble with a UHF repeater. Some of the TKR720's were borderline, but the TKR820's were OK. You don't have a T band unit or something out of the ordinary do you? Steve NU5D John Barrett wrote: > > Byte swapped version of the chip was unable to get the test point > voltages above 150mV on either TX or RX, so I presume I have the byte > order correct J > > > > Data for the chip was generated with KPG21D (the programming software > for this repeater) and validated with the formula from a 3^rd party > document detailing the frequency to hex code calculation. The binary > data saved by KPG21D was edited with a hex editor to extract the 128 > bytes needed for the frequency eeprom. >
