I'm probably missing something here, but last week when you mentioned 
this problem, didn't you say the 570 and it's auto tuner worked fine? 
Aren't both radios using the same coax to the antenna?

When it started acting funny, did you switch to the other radio and see 
if  things were still bad?

With the cost and involvement of putting up a new antenna, I think I'd 
spring for  new coax since it is only 25 feet and is old stuff.    If 
you had the cover off the tuner, I would have   wasted 60 seconds, a 
paper towel, and a teaspoon of alcohol and cleaned the inductor anyway. 
   Even if it has no bearing on your issue, it will need to be cleaned 
sometime and the time to do it is when the cover is off.




73, Steve KW3A

On 11/15/2013 2:00 PM, John Miller wrote:
> It's possible moisture is getting in somewhere Cracks form in old coax and
> it's water resistance tends to deteriorate over the years as well if it's
> been outside a long time.
> ----- Original Message -----
> From: "Michael Ryan" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, November 15, 2013 12:03 PM
> Subject: Re-ATU issues
>
>
>> Hi all:=20
>>
>> Had a ham buddy take a look inside my tuner today and it's good. It still
>> ac=
>> ted up so we thought it might be the coax 1 connection. Used coax 2 this
>> eve=
>> ning and after an hr or so, the tuner acted up again but this time it
>> includ=
>> ed 40. I can't help but wonder if moisture is getting in the line. It's
>> old a=
>> nd just laying on the ground from where it exits the shack, running about
>> 25=
>> feet to the base of the antenna.=20
>> Thoughts?=20
>>
>> 73:=20
>> Michael DE VO1AX=
>
>
>