http://www.iw5edi.com/ham-radio/?dl2hcb-multiband-delta-loop,28
I notices the mini-X-Q (eXtended Quad) which is basically a 3/2 wave open loop with 3 db gain. Because of limited space and height 928ft), I have built the 10m mini-X-Q and modified it into a delta.
to tez delta:
http://www.iw5edi.com/ham-radio/?a-multi-band-super-mini-loop-antenna,160
Antenna pokrywa wszystkie pasma 80-10 meters + 30, 17, 12 meter WARC Bands
he feed point at the bottom uses a 3:1 or 4:1 balun and is then fed with any needed length of 50 ohm coax. The top center is broken with an insulator and has a 29 feet 10 inch length of 450 ohm ladder line connected across the insulator.
IMPORTANT - The 450 ohm ladder line is shorted across at the bottom end.
Antena tuner potrzebny tylko dla 10, 18 and 24 MHz Band .
http://www.iw5edi.com/ham-radio/files/100/WH2T.super.jpg
On 40 meters the ladder line stub automatically acts as a switch and opens the connection across the insulator so the antenna works as 2 one wave length loops fed in phase.
This antenna is a high performance, full size, full wave, 80m loop antenna.
On 40m it is a 2 wave length open loop or Bi-Square
VSWR dla wymienionych ponizej pasm:
3.995 Mhz / SWR 1.1 to 1
3.751 Mhz / SWR 2 to 1
7.164 Mhz / SWR 1.1 to 1
7.290 Mhz / SWR 1.2 to 1
14.151 Mhz / SWR 1.3 to 1
14.348 Mhz / SWR 1.7 to 1
21.250 Mhz / SWR 2 to 1
21.441 Mhz / SWR 2.5 to 1
24.932 Mhz / SWR 3.5 to 1
24.987 Mhz / can't load
28.331 Mhz / SWR 3 to 1
29.650 Mhz / can't load
Jak zastosowac 50 omow kabel do Delta Loop
"Balun biednego czlowieka"
6-8 zwoji kabla 50 Omow
Jak stroic Delta Loop
http://webcache.googleusercontent.com/search?q=cache:5yM_uKpZJp4J:www.w5sdc.net/delta_loop_for_hf.htm+tuning+delta+loop&cd=1&hl=en&ct=clnk&gl=us&source=www.google.com
inny sposob strojenia Delta Loop
jak zasilac antene Delta Loop:
http://www.eham.net/articles/10738%3Fehamsid%3D91ab13072887db471d4710617cd9d0af
powyzszy link pokazuje dokladnie jak zrobic antene Delta Loop wielopasmowa
Uwaga zasilane tej anteny :
1.ta antena pracuje bardzo dobrze z polaryzacja pionowa
2.ta cewka anteny nie posiada rdzenia ferrytowego
3.jesli zasilasz ja z boku ( patrz link) to jej polaryzacja jest pionowa
4. jesli zasilasz ja od gory lub z pod spodu to masz polaryzacje pozioma
5. powyzsze zasady (3,4) sa podstawa dla delta loop
generalne zasady ZASILANIA 50 OMOW:
