[Elecraft] KX3: Intermittent loss of RX sensitivity

[Scott Manthe]

I appreciate the comments and that good RF connectors are important, but 
how would a bad connector cause the KX3 to only lose sensitivity on 
30/40 meters?

73,
Scott N9AA


On 9/16/18 2:34 PM, Jim Brown wrote:
> On 9/16/2018 9:08 AM, Dick Dievendorff wrote:
>> I have had this with other radios. It turned out to be a coax 
>> connection that cleared up temporarily with application of a bit of 
>> power, but then generally got worse.
>
> Yes. This is also a symptom of dirty or failing relay contacts, and of 
> junk coax connectors and adapters. And of poorly installed connectors, 
> and of connectors that are not wrench tight.
>
> Definition of junk coax connectors and adapters -- they don't have 
> Amphenol or a MIL-spec number stamped into them. If you bought new 
> connectors or adapters at a hamfest or flea market, they're almost 
> certainly junk.
>
> All connectors are not created equal -- if, for example, the female 
> center is larger than the male center, they may not make good contact. 
> This is a common problem with junk connectors of all sorts, not only 
> coax.
>
> F-type are an exception to that branding -- Snap N Seal is one of the 
> good brands.
>
> 73, Jim K9YC
>
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