Da li je dipol mala antena?

[9a4qv]

Jedan od zanimljivijih videa koje sam pogledao u posljednje vrijeme:

https://www.youtube.com/watch?v=BZ0OTNFlTg0

Majstor na jednostavan nacin objasnjava neke pojmove koji se inace prikazuju kroz matematicke jednazbe i na kraju vecini nisu jasne.

Preporucujem pogledati, pogotovo "antena majstorima" koji naprave dipol za 160m koji ima samo 1m duzine 

QV

[S59GS]

Kad je več reč o zanimljivijih videa- antenama devojčica tek 10 godina vrlo radostno demonstrira rad sa tasterima i opisuje magnetic loop anteno za 20 m .
https://www.youtube.com/watch?v=0DQyLMkSk5I

A few details about the easy to build 20m Magnetic Loop Antenna:

The capacitor is NOS Russian Vacuum Variable Capacitor - 4 to 100pf.
(EBay)
The copper pipe is 1/2 inch internal diameter. ( Rona in Canada / You could get the same in Home Depot or Zoro in the USA )
The connecting clamps are 3/4 inch made from copper. ( Home Depot )
When wrapped around 1/2 inch pipe - they fit just right.
Two of the screws tightening the clamps are plastic. The other two are metal.
The tuning "knob" is made from 1/2 inch PEX tube. The capacitor has a hole in the shaft - so I just used a small screw to connect the PEX tube.

The only special tool I used for this antenna was a pipe cutter that used for the copper pipes and the PEX tube. It cost around $10.

Watch How to use Morse Code Keys - Demonstration by 10 year old

[s55m]

Tnx Adamski. Onda ništa od te yagi za 160m u škatuli od šibica
Ali, što bi volio, da mi je Mona Jarrahi šef......sad mi je sef samo M...,