CW Latency on 6500 with current software

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  • Updated 10 months ago
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Recently acquired a 6500 and was curious about the latency involved in receive and transmit with the current software, and factors that might influence it.  I ran some tests comparing my 6500 to an Elecraft transceiver that might be of interest to CW DXers and contesters.  To get the paper with scope photos, etc., use the link below to download the PDF file.  Questions and comments welcome here. 
www.k8ac.net/Latency.html
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K8AC

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Posted 10 months ago

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Tom K3TF

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Good information. I am a CW only op as well. I read about the same here. I ran an additional test here with my 6500 on the timing delay between the TX1 and when the RF envelope starts and stops. They did a great job on the new software. I measure 2ms between TX1 going active or low and the RF envelope starting and the same 2ms between when the RF envelope stops and then the TX1 line goes inactive or high. Perfect for a PIN diode amp such as my KPA1500. You can run with zero TX delay on the settings. With my SPE Expert and my Icom PW1 I run 10 ms. delay on the setup. Both of these amps switch around 6ms (they use relays). 

I just upgrade to a 6600 and will check but my guess is the timings will be the same. 

Tom
K3TF...