[Elecraft] T1 and FT-817 sometimes not tuning

Leigh L Klotz, Jr. Leigh at WA5ZNU.org
Tue Apr 12 17:22:25 EDT 2005


I gave my new T1 a workout operating /VE3 last week, and found an 
oddity.  Sometimes pressing the tune button and sending dits or dahs 
doesn't do anything but flash the green LED.  Taking the battery out 
doesn't dix it, but a band change and a retune and then QSY back usually 
makes it start again.

I noticed that the reported SWR on the 817 was full scale when this 
happened, and being an adventurous soul I upped the power from LI to 
blinky-LIII and got it to tune, sometimes.

One possible explaination is that the tuning is starting from the 
current network settings, and when the resulting SWR is too high, the 
817 high-SWR foldback is cutting the power way back.  (A tap of the PWR 
button on the T1 also showed no output, but it's not fair to use the T1 
to test itself.)

Another possibility is that I have an intermittent or cold solder 
joint.

I suspect that if I had remembered to bring the band-data cable I would 
have encountered fewer problems, but even populating the firmware memory 
table seems like it would have this as a bootstrapping problem on a new 
antenna.

I am not sure what to suggest for a firmware change, but wanted to 
report the phenomenon.

Leigh / WA5ZNU


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