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Month: June 2013

RF Power Meter

A power meter is almost a necessity when building your RF equipment. Since I did not have one I decided to build one myself.

SAM_0522_2
Analog meter with homemade scale

 

 

 

 

 

 

 

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Author adminPosted on June 16, 2013January 8, 2014Categories electronics, ham, rf

IC202 makeover

I decided to upgrade my old IC202 with some new features,  a long time ago I already added a new frontend based upon a BF891 and SBL-1 but I now wanted to have a digital readout to have a better and more accurate frequency  reading.

SAM_1409

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Author adminPosted on June 4, 2013June 24, 2013Categories hamTags trx

ATV generator

For Amateur Television I was looking for a simple and standalone video generator that could do the following:

  • Show predefined pictures in graphic format ( .jpg )
  • Play movies (in mpeg format)
  • Play sound (MP3 or WAV format)
  • Simple to use
  • Network capable (uploading pictures)
  • PAL output
SAM_0313
Front view of RPI-ATV

 

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Author adminPosted on June 3, 2013November 4, 2013Categories electronics, hamTags atv, rpi

144 MHz Power Amplifier

Finally my 144 MHZ QRO amplifier is ready. Based upon PCB of F1JRD and a BLF578 of NXP.  The PA is capable of making > 800W but due to antenna limitations it can only run at about 400 Watt.

Amplifier in test setup

 

Continue reading “144 MHz Power Amplifier”

Author adminPosted on June 2, 2013December 31, 2013Categories hamTags qro

First post

Title says it all…

Author adminPosted on June 2, 2013June 2, 2013Categories Uncategorized

Recent Posts

  • Remote Station active
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  • QRO PowerMeter for 144 MHz PA
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Popular Posts

  • VSWR bridge for Spectrum Analyzer
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  • Sequencer
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