Smart SDR 1.5 & 6300 TX locking on 7Mhz

  • 1
  • Problem
  • Updated 3 years ago
  • Solved
  • (Edited)
Downloaded and installed SSDR 1.5. Updated the 6300 and everything appears to be fine until I go to 7Mhz. I use an external tuner - LDG AT100Pro ll and when I try to tune, both the TUNE & MOX button light up and the radio crashed still locked in TX.

I tried doing a radio reset which did not cure the problem.

I use a different aerial for 7Mhz but it still happens if I use the other aerial.

It does not happen on bands below 7Mhz, I have not tried it on 1.8Mhz or 3.5Mhz

I have gone back to 1.4.16 and do not have the problem, everything works correctly.

Computer is a good spec running Windows 7 Pro 64bit.

Tim
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Tim - G7GFW / F4VQP

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Posted 3 years ago

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David Warnberg

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I wonder if this has any relation to the Dirty Transmit signal issue?  
https://community.flexradio.com/flexradio/topics/dirty-distorted-transmit-signal
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Tim - W4TME, Customer Experience Manager

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Does it fail on 7MHz if you are connected to a dummy load?
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Tim - G7GFW / F4VQP

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Hi Tim,

Yes, doesn't matter if it's on a dummy load or a real aerial.

David - I wondered about that but I just worked someone on 14Mhz and the audio is fine.

Tim
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Tim - G7GFW / F4VQP

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Should also add that TX power doesn't have any effect - I usually tune at 2 watts and TX at 70 but I reduced TX to 2 watts and it still locks so I am 99% sure that it isn't an RF feedback problem.

Tim
(Edited)
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Tim - W4TME, Customer Experience Manager

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Please describe the "readio crashed" behavior.  Do you get any error messages?  If so what are they.  What is the power LED color state when the radio "crashes"?
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Tim - G7GFW / F4VQP

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Problem has now cured itself! Did a couple more tests on all bands and when I came back to 7Mhz - no problem. Just had a contact and got a very good report into Bristol in the UK so it all seems to be working properly again.

I don't know if it's my ears but 1.5 seems to be slightly better on receive than 1.4.16 - has there been any tweaking on the receive side? Seems slightly more sensitive to me.

Tim
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Tim - W4TME, Customer Experience Manager

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That is good news.  We are always doing logic and code optimization for each new version of software that can result in serendipitous improvements across the board.