заблокировалась рация kenwood th-f5 no data

important for some KENWOOD radios.

Otherwise TxD to RxD interference will result in programming failure. It is

low mutual capacitance among wires is also applicable.

Cable for RRxD and RTxD connections should be shielded. Multiwire cable with

It may fail to work in some cases. Use 78L05 with an external power source.

78L05 is the worst choice due to it's own high current consumption.

LP2950 is replaceable with LM2951 with appropriate resistors,

Fast silicon diodes of any type will do, for example 1N4148 or LL4148 in

VT2 may be BC857 or similar (i.e. BC557B, etc.).

VT1, VT3, VT4 transistors may be BC847 or similar (i.e. BC547B, etc.),

GP-340 connector (draft by K. Bokhanov)

Connection circuits (jacks for mobile radios are shown as they are plugged

transformation with regard to the real radio programming circuits. And

zero is a high voltage level. Another goal is the correct voltage level

levels. That is because the COM port's logic one is a low voltage level, logic

schematics is the invertion of signal

for programming radios and other devices. The main goal of this cable

The programming cable is intended to be used with a computer RS-232 port

A Universal Programming Cable for Radios

A Universal Programming Cable for Radios