i am having a problem "reading the radio" on the kenwood tk-630h. i am using the kpg-4 cable and kpg-7d software program. i do not have the manual. i have tried two different tk-630h radios, same problem. i have switched comm ports, same problem. my question is: does the tk-630 have to be put into the programming mode via some method other than via the software program, or should it respond directly from the computer keyboard. if it should respond directly from the computer keyboard command, "read radio", then i assume i have either a defective cable or software. good thought, but had no luck trying that either. i also tried some other combinations with no luck.
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bob, i have that information, but it is on another computer that is down right now. i'll try to get it back on line tomorrow night, too late tonight, and i'll maybe send you the information then if someone else hasn't already done so. off the top of my head, i do remember that it is two trimmer caps in a square metal can in the center of the rf board, toward the front of the radio. on trimmer is for the rx vco, the other is for the tx vco. don't remember which is which right now, but it ain't hard to figure out. don't remember where the test point to measure is, either, but you basiclly tune for max voltage all the way across the band. then, tune the pre-selector (four small metal cans, right rear of the rf board, don't remember the numbers, of course!) for maximum signal passage across the band. as i said, i'll try to fill in the blanks tomorrow night if someone else hasn't already done so.
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okay, i'm another newbie to this site and have the same question on the tk630 lowband 40-50 mhz going down into the 29.00 mhz range. i currently have it programmed and it will only transmit down to 33:60 mhz before the display starts to flash. i would like to know how to retune my radio to also go through the full spectrum of frequencies.
any help would be appreciated,
thank you all,
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ok, bob, here goes. lay the radio on your work surface with the heatsink facing away from you and the model/serial number label to your left. remove the cover that is currently facing up, should run pretty much the whole length of the radio. to the rear is a large, square shield. this houses the pa, which you don't need to change. everything you need to adjust is in the smaller section towards the front of the radio. first, locate z302, which is a metal box in app. the center of this section. it should have two holes in the top of it. the hole to the right is to adjust the rx vco, and the hole to the left is to adjust the tx vco. just to the right of z302, you should see two capacitors together, a gap, and a third capacitor. in this gap, you will find tp302, where the vco voltage is measured. now, with a volt meter connected to tp302, set the radio to the highest frequency you plan to use. if nessasary, tune the rx vco adjustment untill you see between 2 and 6 volts dc, or untill it locks (display stops flashing, radio stops beeping), whichever comes first! then key the radio, into a dummy load, of course, and repeat the same procedure for the tx adjustment. finally, go to the lowest planned operating frequency and make sure it still works correctly. if not, go back and forth untill you get a happy medium.
to realign the rx preselector, locate l301, l302, l304, and l305. these are located in a row, right to left, in the upper right hand corner of the same section as the vco. i'm going to assume you know how to align a preselector. you should now be in business! let me know if you have any problems, and i'll see if i can help you further. i have already retuned two of these units as described, and they both work great!
tip: as you should already know, don't use a conductive (metallic) tool for any of this, esspecially the vco adjustment.
kenwoodman, i would be really surprised if you got that split radio to go that low. you need to find the version with the lower split to do what you want to do.
