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Panadapter spurs in Tune mode

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K1UO Larry
K1UO Larry Member ✭✭✭
edited January 2020 in SmartSDR for Windows
Am I the only one noticing nasty spurs on the 6700 transmitter when using tune mode? 160M seems to be the only Band with a relatively clean carrier with much stronger spurs showing up on 30M and up with 17M being the worst on this particular 6700. (-95 dbm) Tested 160-6 feeding the 6700 Ant1 into a Palstar5K dummy load. never show 100 watts out on this radio.... 85 watts seems to be the limit with a couple Bands getting to 80 watts only. Version is 0.13.10 ADDENDUM: Sorry... 6M appears to be the worst

Answers

  • Gerald-K5SDR
    Gerald-K5SDR FlexRadio Employee ✭✭
    edited April 2019
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    Those are receiver aritifacts caused by high rf currents inside the radio getting into the ADC. They are NOT going out on the transmitted signal. The are simply not real Note that isolation decreases with increasing frequency so the artifacts will increase with frequency. We could have blanked the panadapter as is done on other radios but we have decided not to do so. We like having the panadapters active while transmitting so that you can watch the bands with a second antenna.
  • W5UN_Dave
    W5UN_Dave Member ✭✭
    edited February 2019
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    I concur that my 6700 also is not putting out more than 70 or 80 watts max into a 50 ohm dummy load (SWR showing1:1). I read that some were seeing the full 100 watts. Is there a problem here?
  • DonS
    DonS Member ✭✭✭
    edited January 2020
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    My 6700 is also putting out 70-80 watts into a 50 ohm dummy load on 80-10m. Both the watt meter on the 6700 and the watt meter on the Palstar AT-AUTO show about the same power out. I put the radio in tune mode and then run the power out up to 100.
  • KB5XE
    KB5XE Member
    edited January 2020
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    I might have missed it, but how do you set the output of the tune mode? I have tried and only get 10 watts. I thought it was fixed to 10 watts for time being. Owen KB5XE
  • DonS
    DonS Member ✭✭✭
    edited September 2013
    Options
    go into tune mode and then set the RF Power to the level you want.
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited December 2016
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    This is a great conversation that's separate from the main topic, so I created a new topic to continue the discussion. Please reference the new topic here: How do you set the TUNE power level

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