The length of the callsign is certainly a factor as so aptly explained by Jose. However, some combinations and positions of letters can be confusing - especially in high speed CW or CW that is not se
The newest edition of Low Band DXing should be available soon and will include information on vertical arrays that use parasitic elements. These arrays were designed by K7CA and are currently being u
Here's a practical input ! 73, riki :-) K7NJ - 4X4NJ There is a very simple paddle which can be built by the guys. It uses a piece of PC board a cork and a few bolts and nuts. Take a look at it in QS
I agree in principle. However the 30-40 dB attenuation expected appears somehwhat exaggerated from my personal experience and from what I've read. Perhaps there is a more involved system of stubs tha
Yes, I understand now. That seems like a great system for attenuating 2nd harmonics. Its equivalent circuit (assuning lossless coax) resembles a pi filter. At the second harmonic, the input and outpu
Hi Alan, Take a look at the links mentioned below! 73, Riki AA4LR: tests is because they use a very simple single-conversion design. Although the first (and only) IF filter isn't a particularly sharp
The recently publicized destruction of the amplifier in France is not surprising after reading the following article. It appears that the French are very careless in these matters. Conclusion: Avoid
Dear Patrick, Please accept my apology. I meant no disrespect to the wonderful people of France. I have many dear friends in your country, and always found myself in the most pleasant atmosphere duri
hmmmmmmm...... If I remember correctly (?), there are, on the average about 5 characters to a word in plain text. So, 216 characters per minute would be about 43 words per minute. That is a very resp
Thank you W5WMU for sponsoring the Top Score World plaque received for the 2005 Stew Perry, and to N6TR and W7EW for their efforts in making this a most enjoyable event. Special thanks to K7CA for us