Locked Re: F991a No TX #Windows07 #Yaesu


On 15 February 2022, at 20:55, Ronnie Hull <w5sum@...> wrote:

My FT991A was Intermittently shutting down. When WSJT keyed it, it would reset. I checked my power supply and power cables and all was well.
What I found was, apparently the antenna tuner does not “remember” where it’s has been. When I change bands I HAVE to activate the tuner to match, then I have no Issue.
Hi Ron,

Most tuners do not really like being in automatic tune more on full power. I know my MFJ tuner controlled by my IC7300 doesnt. So I have to semi-auto tune it with 10W when I change bands.

I reckon I could risk full auto with WSJTX as long as it's already been tuner on all bands. I don't know if your tuner (internal?) Supports this mode.

73 Phil GM3ZZA
I only use it on 80-40-30 using a 80M doublet
On Feb 15, 2022, at 2:43 PM, Paul St John <n6dnpaul@...> wrote:

Tnx Cliff for the info about the heating problem.  I bet that is the basis of my issues.  That would explain the erratic operation, etc.  It has been very frustrating.  I’ve used multiple shielded cables and every setting I found recommended by anyone - all without a lasting cure.  I was running about 40 - 50 watts on FT8 and bet everything got overheated. 

Vy 73
Paul, N6DN
*Paul St. John, N6DN

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