I find it so ironic, John, that you put the greatly appreciated effort into these great videos, just to have the thing blown to pieces by a lightning strike and a true and ultimate lesson for us all!
Hey John, thanks for the videos. I am looking for a solution as I do not have a lot of real estate to work with. My question is when running the radials, how deep do you burry them into the ground? Also, how close can they be together and still be efficient? Last, for 10 -40m how many would you use? Thanks very much VE5MJB
Thanks for watching my videos and for your question. While I'm no expert, I can tell you how I did it. My radials are only about an inch deep. I’ve read where folks just put them on top of the ground and the grass grows and hides them nicely. I think I’ll do that next time! My vertical has about 32 radials of various lengths and spacing. I am certain it’s not the most efficient, but it seems to work for me.
That S9v should work great.I have had a lot of success with my simple verticals.So far they have been 1/4 waves but I am going to try a half wave vertical for 17 meters soon.(Halfwave does not need such a big earth system!)
John,I wonder how many radials you have burried in your lawn?
@GeoN0JRJ -- George, Thanks for your comments...I think a remote switch needs to be added to a 'long' list of things I'd like to do. Maybe I need to move it up the list a notch or two!
Nice Job as usual John....have you tried it with a 4:1 unun at the base? I built one several years ago and use a 4:1 at the feedpoint. I can tune it everywhere. (even 160) Keep up the good work.
@hmanonbass Thanks for your reply. I did try a 4:1 balun but not get much change in performance However I think a unlun is what I need to make it work better on the other bands. Oerall, still very happy with the antenna.
Firstly , there is going to be an interaction between the two verticals that you have there.
This will cause odd radiation patterns in both antennas as the unused antenna will be acting like a parasitic element., exactly like a reflector or director.
It will also impact on your impedance (usually this sort of thing drops impedance) and was likely the reason why you had to increase the length of the antenna wire to find resonance.
John - Fascinating! I checked out the S9V webpage this weekend. Well, I think you are well on your way to a "stealth antenna farm" in your subdivision! Great inside tips as always. 73 - KF7ETX / David
the lawn mower
mrsmashthings 3 months ago
RIP S9!!
I find it so ironic, John, that you put the greatly appreciated effort into these great videos, just to have the thing blown to pieces by a lightning strike and a true and ultimate lesson for us all!
Sorry for the loss! Appreciate the the lesson!!
N0rthwestRadio 5 months ago
@N0rthwestRadio
Tnx for the comment and for following along with my videos. Since the video I've replaced the antenna, a couple of rigs and am back on the air.
Now, I take the antenna down when I'm not in the shack! Once is enough for me.
73
John/W5CYF
johnrob281 5 months ago
This has been flagged as spam show
well,great video.
one more about radials,what do you think if i would buried a roof metal plate,,like you see on old barn?
let say a metal galvanised plate about 36 inches wide x 96 inches long ,,,would it do the job?
let me know what you think
73/s
gervais ve2ckn
ve2ckn@hotmail.com
veebic 7 months ago
Ka7niq here, Thanks for the Video OM, Especially like the choke container, it needs some of that GOOD Texas Chili in it, LOL
ka7niq 11 months ago
Hey John, thanks for the videos. I am looking for a solution as I do not have a lot of real estate to work with. My question is when running the radials, how deep do you burry them into the ground? Also, how close can they be together and still be efficient? Last, for 10 -40m how many would you use? Thanks very much VE5MJB
1krusty1 1 year ago
@1krusty1
Thanks for watching my videos and for your question. While I'm no expert, I can tell you how I did it. My radials are only about an inch deep. I’ve read where folks just put them on top of the ground and the grass grows and hides them nicely. I think I’ll do that next time! My vertical has about 32 radials of various lengths and spacing. I am certain it’s not the most efficient, but it seems to work for me.
Hope this helps!
73
John/W5CYF
johnrob281 1 year ago
John,
That S9v should work great.I have had a lot of success with my simple verticals.So far they have been 1/4 waves but I am going to try a half wave vertical for 17 meters soon.(Halfwave does not need such a big earth system!)
John,I wonder how many radials you have burried in your lawn?
Yet another interesting video!
73
Sandy
slapheadcodeman 1 year ago
@slapheadcodeman
Sandy,
Good question about the radials. Currently there are about 30 something. I lost count since I put them in over the course of several weeks.
Antenna is FB, worked two Austrian stations on 100 watts this morning.
---73--
John/W5CYF
johnrob281 1 year ago
Now all you need is to make a remote antenna switch John!
GeoN0JRJ 1 year ago
@GeoN0JRJ -- George, Thanks for your comments...I think a remote switch needs to be added to a 'long' list of things I'd like to do. Maybe I need to move it up the list a notch or two!
--73--
John/W5CYF
johnrob281 1 year ago
Nice Job as usual John....have you tried it with a 4:1 unun at the base? I built one several years ago and use a 4:1 at the feedpoint. I can tune it everywhere. (even 160) Keep up the good work.
hmanonbass 1 year ago
@hmanonbass Thanks for your reply. I did try a 4:1 balun but not get much change in performance However I think a unlun is what I need to make it work better on the other bands. Oerall, still very happy with the antenna.
--73--
John?W5CYF
johnrob281 1 year ago
Hi John.
I can see a few problems here.
Firstly , there is going to be an interaction between the two verticals that you have there.
This will cause odd radiation patterns in both antennas as the unused antenna will be acting like a parasitic element., exactly like a reflector or director.
It will also impact on your impedance (usually this sort of thing drops impedance) and was likely the reason why you had to increase the length of the antenna wire to find resonance.
-->
OH2FFY 1 year ago
@OH2FFY
>--
Next , your distance from the feed-point to the ground is too far.
This should be 5cm max.
With the feed-point too far from the ground it places the feed-point off centre.
Also you didn't say anything about your underground radials.
Buried their should be a minimum of 32 radials each 1/4 wave long on the lowest frequency of operation.
Having less radials increase ground losses and reduces performance.
Regards
gregW:-) OH2FFY
OH2FFY 1 year ago
@OH2FFY --- Greg,
Thanks for the reply. Your comments are very much appreciated.
Please see PM for more details.
Thanks in advance,
73
John / W5CYF
johnrob281 1 year ago
John - Fascinating! I checked out the S9V webpage this weekend. Well, I think you are well on your way to a "stealth antenna farm" in your subdivision! Great inside tips as always. 73 - KF7ETX / David
USNERDOC 1 year ago