Dave, Yes, you must adjust at least the five front-end coils, but it is best that you have a service manual in front of you when performing a significant band change on a TKR-750 repeater. Both the front end of the TX-RX board and the VCOs should be adjusted for optimum performance. An accurate service monitor to set and adjust the repeater is required, and you should be familiar with using the SINAD meter function to adjust the radio. There are many adjustments to make on a TKR-750, and you may not know how many "diddle-stick artists" tinkered with it before you got it. A full alignment is a good investment.
If the serial number of your TKR-750 is below 60700001, you need service manual B51-8556-10, about $23. If your unit's serial number is higher, then you need service manual B51-8556-20, about $33. You can order these manuals from Pacific Coast Parts (www.pacparts.com) and other Kenwood parts houses. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dave Sent: Thursday, February 05, 2009 5:36 PM To: [email protected] Subject: [Repeater-Builder] Kenwood TKR-750 HI ,I am New, I have a TKR-750 that was on 159.xx MHz. I moved it to 147.xx MHz. The transmit works great. What do I have to adjust on the rcv side? I understand 5 coils have to be tweaked. Please explain. 73 Dave WB8MWG
