QRP operating at Myre-Big Lake State Park

This last weekend Beth and I took our camper trailer to Myre-Big Lake State Park near Albert Lea, MN. I had along my K1 and Crappie Pole 20 mtr C-Pole vertical.As expected the C-Pole antenna worked well. Over the weekend I had 11 contacts including WA3SLN (PA), K4SPO (KY), K3WWP (PA), AF4O (TN), WB2PEF (NY), VA3RKM (ONT), WB6OJB (CA),WB4KLI...

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Frequency Converter 2.4 GHz to 700 MHz

It's theoretically possible to convert a 2.4 GHz wireless LAN signal to a much lower frequency to help overcome non line-of-sight issues. Many UHF television frequencies in some areas are currenty unused. Those would be great to hijack. You could then use common directional UHF TV antennas for your links. This current design is theory...

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Designing RF Filter Faster

How to design RF Filter Fast? A Windows® electrical filter design and analysis program designed to expedite the design of lowpass and highpass filters using Standard Value Components (nearest-5% values). You can view your spectrum analysis filter design.SVCfilter™ is a program designed to expedite the design and analysis of lowpass (and highpass)...

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RF Test Probe

Like the Classic RF Probe, this RF test probe is used in conjunction with a high-impedance-input Voltmeter or Digital Voltmeter Meter (DVM). What makes this probe unique is?What makes this probe unique is that it's built inside the shell of a regular ol' ballpoint pen. Besides being conveniently compact, the unit sports a needle-probe suitable...

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Just back from Rhine trip

Some interesting post whilst away...Seems I came 2nd in IOTA qrp category in EU005 during 2009 as I have a certificate!Lots of QSl cards some go back as far as 2006, lots more 3B8/M1KTA.An FPGA development board.Anyway I'll be preping for the RSGB IOTA contest later and making a 12 our entry again then back to melting solder on the MOBO buil...

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MP3 FM Transmitter Circuit

Here's a simple VHF FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio. The circuit use no coils that have to be wound. This FM transmitter can be used to listen to your own music throughout your home. When this FM transmitter used in the car, there is no need for a separate input...

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Real Radio?

Yeah, it glow!Breadboarding the new T.N.T. based transmitter design. Coming so...

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