Anyone seeing strange ATU operation in v3?

  • 3
  • Problem
  • Updated 5 months ago
  • Acknowledged
  • (Edited)
ATU operation in v3 is strange.

My 6700’s ATU operation is quite strange, since upgrading to v3.

Flex6700, Limited Edition
Maestro ‘A’ model
Local network, 6700 via Ethernet, Maestro via WiFi (both on same subnet)
SteppIR, controlled via USB serial cable on the 6700

When I change bands, my SteppIR tunes to the new band and shows an VSWR of about 1.5:1, which is fine; however, when I hit the ATU button, the radio does a single quick Tx and illuminates the ATU button. When I retest the VSWR, it shows the same value, 1.5:1.

When I reinstall v2.4.19, the ATU operates ‘normally ‘... The radio does several Tx operations, relays click and when complete, the VSWR is 1.1:1 or better.

Yes, I know that 1.5:1 is quite good and that if I did some small SteppIR adjustments, I could get 1.1:1 directly. The ATU will be needed on my 6m - 80m End-Fed wire antenna, when it goes up.

Anybody else seeing this?

73’s de Mike wa6fxt
Photo of WA6FXT Mike


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Posted 5 months ago

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Photo of Tim - W4TME

Tim - W4TME, Customer Experience Manager

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Official Response
Yes, there are two ATU defects that will be addressed in the upcoming maintenance release of SmartSDR v3.0