Kenwood TS-590S manual Software: Enhancing Operating Pleasure, Mic Cn

5 SOFTWARE: ENHANCING OPERATING PLEASURE

Hints and Tips

“Extension of PF function”

Though only two PF keys are available on the transceiver, it is possible to increase the number of the PF keys by using a switch to switch a voltage derived from the microphone connector.

If you have a microphone equipped with the PF keys such as MC-47 (although it was discontinued and no longer available), you can assign the PF function to the PF key and the UP and DOWN keys. Likewise, by adding an external circuit as shown below, the PF function also can be assigned.

			PF2	PF1	UP
			100 k		22 k
			PF4	PF3	DOWN
MIC CN
	4
5		3
	8		k		k
6		2	100
					22
7		1

Figure 5-6 Example of Circuit

Caution:

The figure shows the microphone connector viewed from the front panel, but it is inverted (upside down).

The circuit only shows the connection of DC signals. Be fully aware of loop interference of radio frequency signals and other possible issues that may arise.

We will not accept any request for fixing problems arising from connecting devices other than Kenwood’s genuine optional products regardless of the content of this document.

TS-590S

CONTENTS

43