• Home
  • Mapsite
  • Add Link
  • Contact


Hits 

1:1 HF Balun, balanced to Un-balanced


Core 4C6 Philips, diameter = 36mm, height = 15mm, interior = 28mm the CU wire has a wound of 3x0.65 mm read in parallel and 3 of these are wound on the core the distance between the windings makes this balun close to 50 Ohm
post 28 Jan 2024
1:1 HF Balun, balanced to Un-balanced

Toroid & balun Links →

195



Balun for yagi 144mhz
Balun yagi if coax type rg59/u is long 34,5 cm

Baluns on Log Periodic Antennas
This is the electrically ideal method of bringing the feed line back to the mast from the log feed. This method keeps the coaxial line away from the balanced transmission line formed by the boom. This works with ANY log periodic and good balun, including 200-300 ohm balanced systems

Coaxial balun
I used RG58 coaxial cable since I use less than 300 W power. Better is the use of the RG142 Coaxial cable with Teflon dielectric, which handle a power of 2 KW at 144 MHz with a lower loss also

End-Fed 160-10m Long Wire
diy 9:1 a un-un unbalanced to unbalanced transformer the heart of the un-un uses a type 43 ft240-43 core and consists of a trifilar 3 wire winding arrangement around the core

End fed long wire
I will try to share my experience with the end fed long wire antenna


Ferrite-shop

Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice

Kits and Components

Amateur radio kits by Kanga US

Pcs Electronics

Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters

    Antennas Type

    10 m, 12 m, 15 m , 17 m, 20 m, 2 m, 23 cm, 30 m, 40 m, 6 m, 70 cm, 80 m| 160 m| 60 m, 136 khz, Bazooka, Beverage, Cb Antenna, Collinear, Cobweb, Delta Loop, Eh, End_fed antenna, EWE Antenna, Fan Dipole, Fractal Antenna, Folded Dipole, G5RV, Halo, Helix, Hentenna, Hidden Antenna, Hf mobile HexBeam, Isotron, Jpole, Loop, Log Periodic, Low Band Receiving, Lideband, Moxon, Multiband, Morgain, Ocf Fed Dipole, Quad, Slot, Spiral antenna, Vertical, Vhf-Uhf-Shf, Wifi & Ghz, Windom, Wire, Yagi,
    Ant.Masts and Mounts, Ant.Transmatch, Antenna_Analysis, Antenna Receiving, Antennas Shortwave, Antenna Switch, Balun, Calculator Antenna, Duplex, Feed Lines, Fiberglass tubing, Phased Array, Projects Homebrew, Software Antenna, Software Defined Radio, Swr Meter, System of grounding, Theory, Traps, Tower, Sstv Software, Logging Software, Contest Logging Software, Components and kit, Digital_Mode.html, HF_radio_modifications, Interface Radio, Memory_keyers, Microphone setting, PC sound Radio Interface, Pocket Pc, Preaplifiers, Radio control, Radio Remote control, Radio programming, Radio Transceivers, RF Filter, Spectrum_Analyzer, Tracking satellite, Voice Messages & Keyer
    Radio old Museum, Practice with the soldering, SWL Shortwave DX Radio, Microwave, EME Ham Radio Satellite, Propagation Solar Cycle, Grid Software, Propagation prediction, Qrp low power, Telegraph Morse code, Antennas Satellite, About Rtty mode, Beacon, Band Plan Ham Radio, DX cluster software, PSK31 software, Radio portal, Amateur Television ATV, VHF Activit, Power Supply, PMR 466Mhz, Log Converter Software, Aprs software, Meteor scatter, Surplus radio, Antennas_manufacturers, Packet Radio TNC, Italy provices, Amplifiers, Web SDR, Mac Ham Radio Software, Audio Recording, QSL Printing, QRSS Amateur VLF operating, Prefix World, Sstv Photo, Ham radio Magazine, Ham shirts, Components and kit
Arduino CW Keyer

Arduino CW Keyer Questo progetto, dal nome yaacwk, sta per Yet Another Arduino CW Keyer

cw key to rig switch-box

CW Key-to-Rig Switch Box Project to switch multiple cw keys between several rig

Rf Directional Power Meter

Rf Directional Power Meter A wide dynamic range power meter using a directional coupler, AD8307 Log Amplifier and arduino microcontroller

Wireless cw iambic memory keyer

Wireless cw iambic memory keyer- Cross country wireless cw iambic memory keyer

The Vocal Keyer

The Vocal Keyer The vocal keyer for Yaesu FT1000 MarkV

Helix 2.425 GHz band

Helix 2.425 GHz band Broad bandwidth in the 2.425GHz band>

50 MHz preamp Gain 26dB with the BFG135

50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection

Bazooka Antenna Calculator

Bazooka Antenna Calculator Programma caculator for bazooka antenna,with measurements already calculated for frequeze used by radio amateurs

Terms of Use - Copyright - Privacy Policy