2002 - 2021 i1wqrlinkradio.com
Hits

Dual bander 70cm 144 MHz yagi


The final design balances performance and size.the element for both bands are interlaced and mounted in parallel,all dimensions are in iches Director Lenght are D1 37.5, D" 36.375, D3 36.0 Element Spacing DE to D1 12, D1 to D2 12, D2 to D3 12. Cumulative 12 24 36
post 18 Dec 2021


Antenna for UHF VHF Links

163



Triband Yagi for 6 m, 4 m and 2 m
Developed with the software EZNEC +5 and has only one feeding point of 50 Ω and a boomlength of 1,25 m

Una Quagi da 7 elementi per il traffico via satellite
Il dipolo quad, e quello loop, guadagni un paio di Db sul classico dipolo ripiegato da 300 Ohm, la configurazione quad, inoltre, si presenta gia' con una impedenza di 50 - 70 Ohm e non richiede quindi adattamento di impedenza

VHF antenna construction
In making a folded dipole element I used a tube bender, apparently the bending jobs must be done once without failure

Vhf magnetic loop
A magnetic loop has very small bandwidth butunsensitive to man made noise

VHF/UHF Wideband Portable Dipole for the FT-817
A dipole has about 3dB gain over a quartre wave antenna, is why my preference went to a simple dipole

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| 136 khz
Bazooka
Beverage
Cb Antenna
Collinear
Cobweb
Delta Loop
Eh
End_fed antenna
EWE Antenna
Fan Dipole
Folded Dipole
G5RV
Halo
Helix
Hentenna
Hidden Antenna
Hf mobile
HexBeam
Isotron
Jpole
Loop
Log Periodic
Low Band Receiving
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
Contest Logging Software
Components-kit
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
Digital_Mode
HF_radio_modifications
Interface Radio
Memory_keyers
Microphone setting
PC sound Radio Interface
Pocket Pc Preaplifiers
Radio control
RF attenuator
Radio programming
Radio Transceivers
RF Filter
Spectrum_Analyzer
Tracking satellite
Voice Messages & Keyer