qc antenna
13 links
- 10m Aluminium Moxon Construction
- Building a moxon antenna with aluminium tubes
[ Hits: 11767 | Votes: 8 | Rating: 5.13 ]
- Building High Power, High Q, Loading Coils
- This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter band (1.83 MHz) vertical antenna.
[ Hits: 6885 | Votes: 5 | Rating: 5.4 ]
- The Cobra Antenna
- A folded wire antenna for 160 meters as appeared on 73 amateur radio magazine june 1997
[ Hits: 2134 | Votes: 4 | Rating: 5.75 ]
- TA-33m modification
- Adding 17 meter band to Mosley TA-33M yagi antenna
[ Hits: 636 | Votes: 0 | Rating: 0 ]
- BalUn for Delta-loop & Quad-loop antennas
- This Guide helps you to build the 1:2 BalUn 600 Watts DIY kit step by step. If a delta-loop or quad-loop antenna is powered with a coax cable from the transceiver it is necessary to use a 1:2 BalUn. This 1:2 BalUn uses a symmetrical 1:2 impedance transformer.
[ Hits: 285 | Votes: 1 | Rating: 9 ]
- How to Blow Up Your Balun
- In this article, author examine stresses placed on common-mode chokes (aka baluns) as hams use/abuse them, examine the efficiency of simple dipole multi- band antennas and their feed systems. Stressing a Balun.
[ Hits: 383 | Votes: 0 | Rating: 0 ]
- A Reversible Beverage at ZL3IX
- How do two-wire reversible direction Beverages work, an excellent document that explains fundamentals of beverage antennas.
[ Hits: 515 | Votes: 0 | Rating: 0 ]
- 40m Compact 4-Square Antenna
- The EA5AVL 40M Compact 4-Square Antenna was designed to provide excellent DX communications on the 40m band, utilising readily available components and be relatively easy to construct
[ Hits: 1131 | Votes: 3 | Rating: 10 ]
- Helical Antennas for 144 MHz
- This article is about two excellent small helical antennas for the two meters band.
With performance close to that of full sized antennas, these small helical antennas are low in profile but high in efficiency.
[ Hits: 227 | Votes: 1 | Rating: 7 ]
- Low-Band Receive Antennas
- 98 Pages PPT presentation file on low band receiving antenns by Al Penney VO1NO / VE3
[ Hits: 1534 | Votes: 3 | Rating: 4.33 ]
- VU2TQC Slim Jim
- An home made slim jim antenna for 2 meters band by VU2TQC
[ Hits: 1127 | Votes: 0 | Rating: 0 ]
- 9 band vertical HF antenna by RW3XA
pop
- Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna
[ Hits: 38738 | Votes: 43 | Rating: 7.34 ]
- Elecraft K2 Preselector Modification
- Although most Preselectors are designed with an internal T/R relay, theoretically enabling direct insertion between the transceiver and the antenna, there is a problem when running CW, especially when running full QSK. The switching time of the internal relay is too slow to follow full QSK.
The best way to avoid this problem altogether is to insert the Preselector directly into the transceiver’s RX antenna line, thus avoiding entirely the need to switch the Preselector in and out.
[ Hits: 182 | Votes: 0 | Rating: 0 ]
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