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TYT MD9600 Dual Band DMR
( / VHF/UHF Mobiles)

TYT MD9600 Dual Band DMR
   

Next Meeting

The Gathering
of the
Ak-Sar-Ben Amateur Radio Club
will be on 
April 12, 2024
at 7:00 pm
At the
American Red Cross
2912 S. 80th Ave

This month's program 
 Antenna modeling

with  Roger Cox W8IO (aka WB0DGF)
   

Featured Shacks

K0TSA SHACK
K0TSA SHACK
   

K0USA

Portable Antennas

This is by no means a comprehensive or exhaustive guide to antennas. There are a plethora of books and online resources on antennas
(see links at end of bottom of the page).

 Portable Antenna Choices Pros & Cons 

 

Antenna type Pros Cons Notes
 Dipole (resonate)
  • Inexpensive
  • Easy to build
  • Can be fed with coax 
  • Require 2 supports
  • Single or limited # of bands
Dipole (nonresonant) or offset center
  • Inexpensive
  • Easy to build
  • Multiple bands support
  • Cheaper & lighter Ladder line instead of coax
  • Require 2 supports
  • Requires Antenna Tuner
  • May require balun
 Often fed with open line or ladder line feeders to allow better multiband performance
Inverted V
  • Inexpensive
  • Easy to build
  • Require only 1 support
  • May not work as well as dipoles
End Fed
  • Inexpensive
  • Easy to build
  • Require only 1 support
  • Multiband Operation
  • May require special balun
  • May cause RFI
Verticals
  • Require no high supports
  • Can be very simple (especially single band)
  • Very easy to transport
  • Only option for most mobile work
  • Perform better with  Radials
  • Often have lossy or problematic traps for multiple bands
  • Low angle of radiation poor for close-in QSOs
Beams
  • Good gain
  • Directivity
  • Require tower or sturdy support
  • Often require lots of assembly
  • Limited to higher frequency bands
  • Expensive
 Smaller size at VHF (6 or 2 M) greatly decreases Cons
Mag Loop
  • Small
  • Easy to transport
  • No supports needed
  • No Radials
  • Limited bandwidth
  • Require frequent retuning when changing freq.
  • Can be expensive
 Works well for fixed freq. modes such as FT8/FT4
Mobile Antenna
  • Can be operated when vehicle is in motion qualify for Class C
  • Poor performance
  • Difficult to tune
  • Narrow bandwidth
 With suitable ground plane, mobile antennas can be used for portable operations

 

Half-wave Resonate Dipole-

Non-Resonate Dipoles -

Resonate & Non-Resonate End Fed Antennas - 

Inverted V Antennas-

Verticals-

Beams-

Magnetic Loop-

Mobile Antennas-

VHF/UHF Antennas-

  • Tiger Tail Antenna Booster for HT’s - link
  • Groundplane
    • 2 Meter VHF Quarter Wave Ground Plane Antenna- KB9VBR- Youtube
    • A Quick and Simple 2 Meter Ground Plane Project!- Hamradio Universe
  • J-Pole
    • How does a J-pole antenna work? David Casler- Youtube
    • 9 Simple J Pole Antenna Projects- DX Zone
  • 2 Meter Beam
    • 7dB for $7 - link 
    • Build A 2M Yagi for Emergencies (and Fun!) Matt, N3NWV - Youtube
    • 11 El Long John 2 Meter, Bill Orr- link
  • 6 Meter
    • The "Ugly MacGyver" 6 meter J-pole- Link
    • 6 Meter 5/8 Wave Vertical Antenna By Mike, G3JVL- link
    • How to Build a Six Meter Ham Radio Dipole Antenna by K7AGE- Youtube
    • 6 meter, 2 element yagi- A simple, compact and effective antenna for 50 Mhz.- link

 

   

The AARC in Action  

   

Upcoming Events  

May
2

05.02.2024 6:30 pm - 8:00 pm

May
4

05.04.2024 9:00 am - 10:00 am

May
10

05.10.2024 7:00 pm - 9:00 pm

   

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