Home |
Search |
Today's Posts |
|
#1
|
|||
|
|||
Low dipole performance question
As I understand it, my dipole shoudn't work - it's flat
(non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, List Owner, Yahoo! E-groups: VX-2R & FT-857 |
#2
|
|||
|
|||
On Fri, 4 Feb 2005 11:20:44 -0600, "Ken Bessler"
wrote: If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? The enjoyment of such an "impossibility?" Hi Ken, The how you are asking for could go by any number of explanations, and each may sound as plausible as help from Extra Terrestrials. One way to look at your antenna description (especially with the up front declaration of no choking) is that you have a top loaded, tuned T antenna (vertical instead of horizontal) planted in the highest conductive soil in the U.S. One could only wonder if you couldn't accomplish what you did. 73's Richard Clark, KB7QHC |
#3
|
|||
|
|||
"Ken Bessler" wrote As I understand it, my dipole shoudn't work - it's flat (non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, List Owner, Yahoo! E-groups: VX-2R & FT-857 fwiw, last night the low bands had phenomenal propagation. At about 0600z I was copying 2182 khz loud and clear in Virginia Beach, VA from USCG ComSta Kodiak Alaska, Canadian Coast Guard St Johns, Newfoundland, and USCG Group San Juan, Puerto Rico. Jack Painter Virginia Beach, Virginia |
#4
|
|||
|
|||
Ken Bessler wrote:
If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? Feedline radiation? I once talked to New Zealand on 40m SSB using a G5RV at 30 ft. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
#5
|
|||
|
|||
"Cecil Moore" wrote in message
... Ken Bessler wrote: If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? Feedline radiation? I once talked to New Zealand on 40m SSB using a G5RV at 30 ft. -- 73, Cecil http://www.qsl.net/w5dxp I thought about that since I don't use a balun (I know, I know - I should). My feedline drops 20' down from the feedpoint then runs ENE to my house for 40'. I've thought about a balun but I only use the antenna on 160 & 80 and it seems to work well so I don't want to mess with sucess. -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, List Owner, Yahoo! E-groups: VX-2R & FT-857 |
#6
|
|||
|
|||
On Fri, 4 Feb 2005 11:20:44 -0600, "Ken Bessler"
wrote: As I understand it, my dipole shoudn't work - it's flat (non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? YES, It's called Propagation! I was on 75 last night with a similar situation for 75 meters. I wasn't heard by stations in the southeast, an area I usually cover very well, but instead had to pass traffic to Illinois to be relayed to Alabama to be relayed to Kansas. Lots of long skip but I couldn't talk 60 miles to Columbia, SC. 73 for now Buck N4PGW -- 73 for now Buck N4PGW |
#7
|
|||
|
|||
On Fri, 4 Feb 2005 11:20:44 -0600, "Ken Bessler"
wrote: As I understand it, my dipole shoudn't work - it's flat (non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? Yes, it's spelled "Tucson." And Don is a superb operator. |
#8
|
|||
|
|||
Hi Ken,
As you are finding out, "working" is a variable definition. Optimum antennas would be 6 elements a mike high, but antennas do work at all heights above ground, and with the help of propagation can do great things. All my antennas are below 40 feet off the ground and I still make contacts, including DX contacts, with vertical and wire dipoles and a G5RV. Good luck and good DX, Bill, W4WNT "Ken Bessler" wrote in message news:M9OMd.2187$GT.297@okepread01... As I understand it, my dipole shoudn't work - it's flat (non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? -- 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #1055, List Owner, Yahoo! E-groups: VX-2R & FT-857 |
#9
|
|||
|
|||
You seem to be under the impression that an antenna fits into only one
of two categories, "works" and "doesn't work". That's the first mistake. You also seem to believe that all the power you radiate goes in only one direction or at one elevation angle. That's the second mistake. Once you learn a little about the basic operation of antennas, and how to interpret a radiation pattern, the answer to your question will become clear. Roy Lewallen, W7EL Ken Bessler wrote: As I understand it, my dipole shoudn't work - it's flat (non inverted V), it's laid out running east / west so the radiation should be going north and south and it's only 20-25 feet above ground. The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z Am I missing something here? |
#10
|
|||
|
|||
Ken Bessler wrote: As I understand it, my dipole shoudn't work - I shouldn't either, but I'm too young to retire. it's flat (non inverted V), Best way to have one, as far as ground losses... it's laid out running east / west so the radiation should be going north and south It's *maximum* radiation is going e/w... Not all of it... and it's only 20-25 feet above ground. Well, at least it taller than I can reach... The antenna is a coax fed (no balun), 220' long 80/160 trap dipole. By my way of thinking, this antenna should almost be a NVIS antenna. No almost about it...It is... If so, how did I manage a QSO with K7NN on 1.893 last night? Tuscon, AZ from Wichita, KS on 100w. EM17ip to DM42li on 160m at 04:00z The same way I've been working EU, JA, etc, etc using a 40 ft high dipole on 160, 80......The bands are in better than usual shape...I don't usually hear JA's on 160m, with a 40 ft dipole very well...But lately, I am... Am I missing something here? Dunno...If you are, I'm too far away to be a likely suspect...MK |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
The "TRICK" to TV 'type' Coax Cable [Shielded] SWL Loop Antennas {RHF} | Antenna | |||
Wideband VHF Yagi - Do I have to use a folded dipole configuration? | Antenna | |||
From the Extra question pool: The dipole | General | |||
From the Extra question pool: The dipole | Policy | |||
stuff for all hams | General |