VK3NH large avatar

VK3NH

VK3NHis number62member,register2016-12-08 00:12

Signature:Noel Higgins

Homepage:http://Betaheaven.com

Location:Australia

Radiocommunications Consultant - semi retired - working for my company Analyse Solve & Test Pty Ltd.

VK3NH The theme of the recently created

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    • Reply: VK3NH The theme of creating AF and RF generator output level "off" indication.

      Daniel,

      Can you please give me an indication if the recommendation above can be implemented?

      regards Noel 20 days ago
    • Reply: VK3NH The theme of creating Good protection for the KC901V - Pelican case model 1150

      Oleksandr

      The last time I looked there were 7 kits still available just not at the special price of $2000US
      Regards Noel 34 days ago
    • Reply: VK3NH The theme of creating AF and RF generator output level "off" indication.

      jQuery110208472125295981012_1490164590274?? 40 days ago
    • Reply: n2ztc The theme of creating KC901V vs KC901S

      Hi,

      It really depends on what you want to do with it. If you are only interested in the frequency bands below 3GHz then maybe its not worth the extra money. But with the KC901V you are not just paying about third more for around double the frequency range.

      The differences in the designs are shown in the information under the KC901 on the deepace site. See http://www.deepace.net/shop/kc901v-6-8ghz-handheld-network-analyzer-rf-multimeter/

      I originally tested a KC901S and was quite impressed by the performance. However I wanted the KC901V because it covers the major consumer product WiFi (esp 5.8GHz) and mobile phone bands up to 7GHz.

      They are different in hardware and display design with improvements in the KC901V design to a software defined second IF and demodulation allowing a selection of different IF frequencies of 30, 10, 3 41 days ago
    • Reply: Pavlik311 The theme of creating kc901s frequency counter

      Pavlik,

      You would already know that the marker readout gives you a rough idea of the frequency but if you are trying to tune something then the sweep rate with a minimum RBW of 1kHz for the best accuracy is not very fast or practical.

      This instrument, due to hardware limitations, could not provide a full range frequency indication. Conceptually however, considering the VNA design has a software defined second IF, it could be modified to give a frequency readout or indication within a selected frequency range of 70MHz, if you knew basically what part of the band you wanted to be in. The 70MHz maximum range limit is determined from the maximum number of display points multiplied by the maximum RBW.) This gets you a swept range with no holes for a primary sweep, then you could use the marker to close in to the actual transmission using lower span and RBW settings before moving to a readout mode when you are close to the required setting.

      USING THE CURRENT KC901V DESIGN FUNCTIONS TO ADJUST FREQUENCY

      If you have a desired frequency you wish to tune a variable frequency transmitter to, then follow this process.

      1/ Go to Spectrum analysis mode.
      2/ Set the desired frequency
      3/ Set the RBW to 1kHz (the minimum)
      4/ Select span mode then zero span.
      5/ Tune your device for a peak amplitude level on the display.

      Though this process is not greatly accurate because of the fact that the RBW is still quite wide at 1kHz, you can note the high and low tuning adjustment points at which the level drops by say 3dB and then use the centre point between these.




      regards Noel 45 days ago

    Deepace-BBS