Modifying your TKM-707 may violate FCC or local regulations if used on unauthorized frequencies. It may also void any remaining warranty (unlikely) or damage the radio if done incorrectly. Proceed at your own risk.

: This is the primary community resource for this model. It contains user-submitted articles regarding VFO modifications and frequency expansions.

According to user reports, the modification consists of clipping two specific diodes identified as D312 and D313 . The function of each diode is clearly defined in the service manual.

automatic antenna couplers is a standard "mod" to allow the use of whip or long-wire antennas across the full HF range. JustAnswer Technical Resources

However, because it was originally engineered strictly for marine communications, unlocking its full potential on amateur radio bands requires targeted . Whether you are a radio hobbyist looking to convert this commercial rig into a dedicated shack base station or an ocean cruiser seeking expanded transmission frequencies, modifying the Kenwood TKM-707 Go to product viewer dialog for this item.

The radio includes a protection circuit that activates if the SWR is greater than 3. For best performance, aim for an SWR below 1.5. hammadeparts.jivetones.com or specific component values for the PLL circuit? Articles for Kenwood 'TKM-707' - mods.dk

The unit can get very warm during long transmissions or extended "HI" power operation. Ensure at least 15 cm (6 inches) of clearance behind the unit for ventilation. SWR Protection:

As always, please operate within the law and with respect for your fellow radio amateurs. Good luck, and 73.

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