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Error-NO CONNECTION K1 » History » Version 2

Dan Smith, 10/31/2024 08:18 PM

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# Overview
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This error means chirp got *no* response from the radio at all. In almost all cases, this means a connectivity problem (although it can occur if you select the completely wrong driver for what is connected). The **most common** reason for this problem with inexpensive radios and connectors is **a fitment issue**. Other reasons include bad cable connections, faulty drivers, etc.
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![](1 Interference.jpg)
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# Workaround
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If you have an inexpensive radio that uses the Kenwood K1 connector (the ubiquitous dual-pronged 90-degree one), you can probably work around the issue by pushing **very** hard to fully seat the connector, or even by trimming some of the plastic around the radio and/or the connector itself.
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# Solution
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The best and most obvious real solution is to obtain higher quality hardware made to more exacting standards. The CHIRP project recommends high-quality FTDI-based cables from BlueMax49ers, which generally also have high-quality connectors that minimize problems. Note that just because you're using the cable that came with your radio or the one your radio manufacturer sells/recommends, does not mean it is the best one available.
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Other good solutions include this one from Jim, KC9HI:
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> What I came up with as a solution for this was to create extension
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> cables. The straight plugs eliminate the interference with the case
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> without needing to do any modifications to the programming cable or
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> the radio.
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> 
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> I started out with the 2.5mm -> 3.5mm adapter and 3.5mm -> 2.5mm
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> adapter cables so that by swapping the order I create a 2.5mm -> 2.5mm
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> and 3.5mm -> 3.5mm extension of equal length. This was especially
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> important because I could not find regular 2.5mm or 3.5mm extensions
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> or a reasonable length or of an equal length.
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> I eventually did find a good source of extension cables of reasonable
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> and matching length. That is what I now recommend and use for the
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> UV-17 case style socket well depth issue.
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> [6inch 3.5mm SLIM Mini-Stereo TRS Male to Female Audio Extension Cable](https://www.mycablemart.com/store/cart.php?m=product_detail&p=5788)
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> [6inch 2.5mm Mini-Stereo TRS Male to Female Speaker/Audio EXTENSION Cable](https://www.mycablemart.com/store/cart.php?m=product_detail&p=11107)
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![](4 Extended.jpg)