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Query: qsl
Links: 2059 | Categories: 6
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A Short Back Fire antenna improved for Wireless-LAN applications -
Short guide to build your own groundplane antenna, includes radial measurements fro warc bands -
Quad and Yagi portable antennas for 50 mhz by VE7CA -
Excel spreasheet that calculate virtually every transmission line parameter that one may need. Include Length conversions, Reactance and Length of Stubs -
Name Badges, Plastic Signs Desk Stands License Plates & Frames Rubber Stamps, and QSLs -
A complete documentation with pictures and design of a deltaloop antenna and 1:2.5 balun -
How to build a trapped rotary dipole with many photos ecc. -
A site for collectors, users, restorers of the historic World War Two radio, The Wireless Set No. 19, built in the UK and Canada, and used by many Allied armies. -
This is a C-L-C type tuner with a reflected power indicator. Tuning is done for minimum reflected power. -
HF/6M antenna tuner preselector and antenna switcher project by ON6MU -
20 meter wire j-pole for 14.2 MHz, a vertical, end-fed half wave antenna by N1LO -
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SSTV info for beginners also has links for other data modes psk31 etc and links of interest to radio amateurs -
UX5UO print, world of qsls easy and inexpensive printing of radio amateur qsl cards in russian and english provide agents in several countries. -
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The W3DZZ trap dipole is a versatile and economical antenna option for amateur radio operators looking to work multiple bands without the need for extensive equipment. This antenna design utilizes traps to allow operation on various HF bands, making it suitable for both casual operators and serious DXers. Its construction is straightforward, making it accessible for beginners while still providing excellent performance for seasoned hams. Constructed with readily available materials, the W3DZZ trap dipole can be built to fit specific band requirements, allowing operators to optimize their setup for the frequencies they intend to use. The design is particularly favored for its ability to maintain a low profile while delivering effective radiation patterns. Whether you're contesting or chasing DX, this antenna can enhance your station's capabilities without breaking the bank. -
Evolution of a project of a small magnetic loop resonating from 80 to 40 meters -
AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz) -
Why Packet Radio? Could be, You are Missing Something Funm, by Greg Jones, WD5IVD -
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Dedicated to Yaesu FT847 with mods infos and links... by F1MDT -
1500 Watt HF power amplifier -
This project describes an ARDUINO based automatic antenna tuner, for an end-fed half wave (EFHW) antenna, working on 20 & 40 meter bands -
Italian page including pictures schematics diagrams of an home made linear amplifier using four EL509 in parallel. Output power is about 700W. -
RTTY SSTV PSK31 MFSK MT63 PACKET APRS and more... -
N6QAB Radio Direction Finding Web Site, DF vehicles, transmitters, sniffers, dopplers, TH-D7A -
YU1AW project for a home made QRO PA 144 MHz 20 kW GU36B-1 -
A 1:4 balun suitable for folded dipole antennas -
These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance. -
Calculate your dipole, 3 element yagi and a simple dipole -
Use plain water with a little salt added to build your own Dummy Load -
VE7CA reprint an interesting article taken from arrl antenna compendium. Two elegant practical and portable 6-meter gain antennas, a two-element quad and a tree-element Yagi antenna for 50 Mhz-6 meter band -
How repair the traps, and then homebrew the rest of the antenna, including the matching box -
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YPLOG logging software for Windows support Icom and Kenwood Radios, map programs and a program for coaxial trap design. -
How to obtain a dual voltage without a transformer -
KF4SCI picture of a project for a VHF UHF jpole antenna working on 220 and 440 MHz. -
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5 elements "vee" log-yagi for 10m band- boom lenght : 4mt. Gain : over 10 dBd , f/b =over 40 db (deep null) f/b= min 20dB for different polarization signals -
HF QRP Linear Amplifier with 2x 2SC2166 + 2x 2SC1969 Push Pull Transistors (13.8V) -
The beam has only one feedpoint with 50 Ohm and has an open-sleeve element for 12 m by DK7ZB -
A Parasitic Lindenblad Antenna for 70cm by Anthony Monteiro, AA2TX. This is the official 16 pages PDF File published by AMSAT about the 70cm Parasitic Lindenblad Antenna. -
PDF resources containing information on low cost ssb,am,cw circuits, which are useful for beginners. -
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PCR100 Receiver by PA3ANG -
antennas experiments by David Reid PA3HBB G0BZF -
VHF Antenna in a lunchbox. The magnetic loop on two metres band Lloyd Butler VK5BR
