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Articles (8 articles)

By Todd Carpenter, N9YSQ Hi, guys and gals. Just some thoughts from experience. Hams have as many opinions on radios as there are Hams around the world. I'm not going to recommend one. Find one you like, can work easily, and does what you want. Not what some one else recommends...

Published on 7/1/2012, 6:11 AM by n9ysq | 3 comment(s)

Tags: Novice Technician homebrew antennas qrp

R5 Matching Unit Rebuild

Here is some good info that was shared to me. OverviewThis article describes how to rebuild a matching unit of a Cushcraft R5 vertical. Below are a few pictures of a re-built and slightly modified R5 matching unit. The transformers and choke of the matching unit were assembled using the...

Published on 12/11/2011, 3:24 PM by KD8BIG | 1 comment(s)

Tags: Antennas

Power Rating of Solid-Polyethylene-Insulated Coaxial Cables

This program assists with selection of dimensions of RF coaxial cables when input power is high enough to cause concern about the temperatures to which plastic materials may be subjected. It will also assist with estimating the power rating, Zo and attenuation of a cable...

Published on 10/8/2011, 11:55 AM by KD8BIG | 2 comment(s)

Tags: antennas

Amateur Radio Antennas and Radiation

My neighbors’ family members asked me about my antennas. After I explained that they are Amateur Radio Antennas I could see the fear in their eyes.The very first question I was asked about was, “Will the antennas cause cancer and our hair to fall out?”If there is a word...

Published on 8/30/2011, 12:36 AM by KD8BIG | 1 comment(s)

Tags: Antennas

WY 400–3N 70cm

WY 400–3N 70cm Do you need an UHF-aerial for 70 centimeters that is effective on frequencies from 430 MHz to 440 MHz and more? Well I have been looking for that special one able to serve 400 MHz through 470 MHz. + I searched and surfed in internet and I found commercial WY 400-3N...

Published on 10/16/2010, 8:13 PM by DH4AAD | 0 comment(s)

Tags: aerial aerials antenna antennas monoband ten-ten

Portable buddypole type dipole antenna by ZS1JHG

For backpack / portable use an antenna needs to be light and easily setup and perform efficiently. Having tried vertical antennas with poor results both homebrew and commercial I had a go at building a buddypole type homebrew dipole.The centre connector and coil formers were made from pvc...

Published on 10/9/2010, 4:11 PM by ZS1JHG | 0 comment(s)

Tags: antennas portable antennas

I-max 2000 made by Solarcon – playmate for ten meters

I-max 2000 made by Solarcon – Playmate for ops who enjoy ten meters vy much Many Hams – especially in europe – prefer Ham radios' frequency range of 10 meters. They watch beacons over there around 28.200 mc/s, daily start their activities in the center of...

Published on 8/7/2010, 11:38 AM by DH4AAD | 0 comment(s)

Tags: aerial aerials antenna antennas monoband ten-ten

POWER BALUNS OF DX ENGINEERING DO A FINE JOB

NEVER AGAIN BURNING BALUNS IF YOU WANT TO BE MORE SUCCESSFUL ON AIR THAN BEFORE, YOU NEED SOME QRO. TOO MANY ANTENNAS HOWEVER AS WELL AS TOO MANY BALUNS ARE NOT ABLE TO WORK QRO. MY DECISION: FURTHER ON ONLY HOME MADE HIGH PERFORMANCE MONOBAND WIRE DIPOLES OR QRO MONOBAND ANTENNAS LIKE SOLARCONS...

Published on 8/6/2010, 6:37 PM by DH4AAD | 1 comment(s)

Tags: aerial aerials antenna antennas balun baluns

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