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5000A Transverter Power Output Adjustment

Mick
Mick Member ✭✭
edited November 2018 in FLEX Series (Legacy) Radios
Hi to all community members.  Please can someone assist?  Reference the transverter output XVTX/COM on a 5000A, the manual states adjustment is possible form 0dBm to +5dBm.

On the XTVRs Form, Power is adjustable up to 100, but does anyone know please how this relates to the dBm output figure.

For example, at the maximum setting of 100, is that the +5dBm (3mW) setting.  Does a setting of 33 equate to 1mW (0dBm)?  Any help would be appreciated.  I've had the 5000A for two years now and just love it, though I confess that 'm still learning.

Many thanks.  73  Mick - M0GWD

Answers

  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    It is relative.  The transverter output is not calibrated or set to a absolute known value; it should be between 0 and +5 dBm.  So you will first need to measure the output level on the IF frequency of interest so it is a known quantity.  If the output is +5 dBm, then 50% of scale should be in the neighborhood of 2.5 dBm.  It is a mostly linear control, but not absolute.  I would not use it if you need very accurate power output levels.
  • Mick
    Mick Member ✭✭
    edited March 2017
    Hello Tim.  Thanks for the prompt reply.  All noted and understood.  I'm building a 4m Transverter kit and the kit producer needed to know the Transverter output level.  I will let him know.  Thanks again.  73  Mick M0GWD
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited December 2016
    What IF are you planning on using?
  • Mick
    Mick Member ✭✭
    edited March 2017
    Hello Tim.  I'm using an IF of 28MHz.
    Regards
    Mick
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited December 2016
    At that IF, I would suspect that the gain would be closer to +5 than to 0 dBm.
  • Mick
    Mick Member ✭✭
    edited June 2015
    Hello Tim.  Thanks for the extra information.
    I'll the kit maker know.
    Regards
    Mick M0GWD

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