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11 meter mod for kenwood TS 130S

M

missouri 69

Guest
I traded for a kenwood TS 130S and it has been modded for 11 meters...

I would like to know the mod so it can be UNDONE...

the mod causes 28Mhz to be 26 Mhz and 29 Mhz to be 27 Mhz , doing away with all 28 and 29 Mhz freqs

so can mod be UNDONE ?

thanks

sam




</p>
 

I found this quote on QRZ-

"You can also get on 60 meters by performing another mod that throws all frequencies (going off memory here) 3MHz lower than what is displayed. (Mine doesn't even have the WARC bands enabled.)"



I found your conversion-



Put one switch positive (+5v)/negative(ground)of PIN5 of I.C 76LS163N wich is controlling PLL frequency



In the TS 120 the IC is located in PLL unit X50-1490-00

In the TS 130 the IC is on PLL X50-1700-00



On the schematic diagram 74LS163N is Q16 on TS120 and Q23 in the TS 130



Near IC you will find connectors numered as J15 both in TS130 and TS120. You can see the line numer as A1(1), B1(2), C1(3), D1(4), 5V (positive), BL6 on these conectors.



The C1(3) is lined into PIN5 of 76LS163N I.C, just add the switch between c(1) and 5V(positive) (5), Then you can swith positive/negative of C1(3).



With this mod all Frequency is exactly 2 Mhz converted, but your display don´t change, so you must read 28Mhz as 26 and 29Mhz as 27Mhz when the switch is ON.



So apparently you have a switch.








sonwatchersig.gif
</p>
 
QRN,

With this mod all Frequency is exactly 2 Mhz converted, but your display don´t change,



But you are still correct that one of the factory switches may be the one, and this could probably be noted by listening for a freq change while activating the switches you mentioned.


sonwatchersig.gif
</p>Edited by: <A HREF=http://p067.ezboard.com/bworldwidecbradioclub.showUserPublicProfile?gid=sonwatcher>Sonwatcher</A> at: 12/19/04 1:28 pm
 

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