USB-74 Programming Cable

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USB-74 Programming Cable

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Windows Driver Installation

ARM Driver Installation

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Description
Cable Info
*Radio Compatibility

USB-74

USB-74 – Straight through cable with proper pin spacing for DMR handheld radios.
We have found two different wiring combinations for cables with this pin spacing. They each have their place but they are not interchangeable. If this cable does not work with your radio, you probably have a radio with the other wiring.

Anytone

AT-D578
AT-D868UV
AT-D878

BTech

DMR-6X2
DMR-6X2Pro

Radioddity

DMR-GD77

Retevis

RT-3
RT-3S

RT-8
RT-8S

RT-84

Rugged Radio

R1
RDH-16
RDH-X

TYT

MD-380
MD-UV380

MD-390
MD-UV390

MD-1701

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The RT Systems programmers now work with "generic" USB cables. USB cables have become a little more consistent and reliable. Consider this as you decide which cable will be best for you.
Generic USB Cable	Cables with proper pin spacing for the radio have been around for a long time with varying designs for USB circuitry. Some work well. Some work with varying degrees of success. Some don't work at all. Both circuitry design and wiring could be the issue. If you have a cable that works, it should work with the RT Systems programmer for your radio. A generic cable may not work on Windows 11. When using a generic USB cable for programming, you are responsible for finding and installing drivers. You are responsible for identifying the com port in use by the cable, assigning that in the program and changing it should you use a different cable the next time that assigns to a different com port designation. RT Systems cannot help you with cable setup... there are just too many cables out there for us to begin to know what you have.

USB-74	Performance of the programming system is guaranteed only with the RT Systems cable. There are too many variables in cable design for the guarantee to extend to every cable. The system (RT Systems programmer with RT Systems software) works well. RT Systems programming cables work on Windows 11. Drivers are installed during installation of the programmer. Sometimes help is needed to complete driver installation: we are here to help with that. You do not need to know or assign a com port in the program. The programmer finds the cable automatically. The RT Systems cables are color coded to help you find the right one when your collection of cables becomes a tangled mess. If there is a problem with communications between the radio and the computer, we are here to help....and we know LOTS of tricks!!

RT Systems programmers work with the radio specified from the manufacturer shown in the description.

RT Systems programmers are designed to work with manufacturer's firmware or approved firmware upgrades. There is no guarantee, and a great deal of doubt, that the programmer will work with a radio that has been upgraded with a firmware version that is not from the manufacturer. RT Systems takes no responsibility for changes made to such a modified radio during programming.

No implication is made that a programmer is appropriate for a radio with a similar number from a different manufacturer. Actually, purchasing a programmer for a radio from a different manufacturer just because it has a similar number is strongly discouraged.

RT Systems takes no responsibility for the performance of your radio should you choose to use a programmer other than that listed specifically for the manufacturer and model of that radio you are attempting to program. Exceptions are noted in the description for several products. Check there if you feel your radio is a variant of the one shown, but be advised that the manufacturer will never vary. If the model is not listed, you should check with RT Systems prior to your purchase.

Installed software is NOT returnable, exchangeable or refundable.

USB-74 Programming Cable

USB-74

Anytone

BTech

Radioddity

Retevis

Rugged Radio

TYT

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