Kenwood TS-2000 TX extension

TRX Kenwood TS-2000 frequency range adjustment

Extending the TX and RX frequency range of the Kenwood TS-2000 transceiver consists in removing SMD resistors with a value of 0 ohms.

We can get to the resistors after removing the bottom and top covers of the TS-2000, unscrewing the two top screws holding the front panel and loosening the two bottom screws so that we tilt the front panel about 90 degrees forward. After opening the front panel, we have the TRX in front of us facing us, in that position there is a fan on the far left and right next to it on the bottom of the printed circuit board eight jumpers, some shorted with zero resistors, some without resistors, it depends on the TRX model. (US, EU, …) See image.

In my case, I had a Kenwood TS-2000 USA version and originally only two resistors were installed, according to the picture with the number R52 and R53. According to the instructions, for example also here I removed only R 53 in my case. The result was as follows:

RX main:
30 kHz - 60 MHz
142 MHz - 152 MHz
420 MHz - 450 MHz

TX main:
1705 kHz - 30 MHz, 49 MHz - 54 MHz
142 MHz - 152 MHz
420 MHz - 450 MHz

RX sub:
–
118 MHz - 174 MHz
220 MHz - 512 MHz

TX sub:
–
142 MHz - 152 MHz
420 MHz - 450 MHz

When removing the resistor with a soldering iron, I recommend caution, especially on the static. It is absolutely necessary to "ground" yourself, a conductive bracelet...etc...Otherwise it can happen that a static spark jumps between you and the printed circuit board, as if nothing happened, TRX after assembly works normally for another month, two...maybe a year and then the processor or other components sensitive to static will fail.

Joseph, OM1CI