BC 780XLT IF Tap

BC 780XLT IF Tap

BC 780XLT IF Tap

Several years ago, I modified a Softrock kit to operate at 455 kHz.   The main purpose behind this build was to add the ability to connect it to a receiver’s IF output (if it operated at 455 kHz, which is a common IF output), and gain SDR operation – spectrum display, various modes, etc. This …

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RSSI correlation

RSSI correlation

One interesting aspect of the BCD-996 and similar radios is the digital command and status protocol. In digging into the software, I learned that there is a RSSI (Relative Signal Strength Indicator) included, which delivers a numeric value relative to the signal strength of a received signal.   Given that I could command the radio …

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Photography

Photography

[ZFP_Photo id=’325a6f68′] Cameras are cool, too….  testing the zenfolio  plugin.. For the 100AW rally, I decided I wanted to catch some action photos…  which is not a horrible challenge, if one has a good vantage point – at that point, it’s all camera settings.  At night it becomes a bit more challenging – especially when …

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Return Loss – A new take on VSWR measurement

Return Loss – A new take on VSWR measurement

  Well, first some background – and definitions I’ll give some basic definitions and descriptions… if you want the full detailed technical description, try here http://microwaves101.com/encyclopedia/index.cfm Network Analyzer A network analyzer is essentially a spectrum analyzer with a signal generator that follows it – both of them are locked in frequency. Many service monitors have …

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