Make a 6,120 MILE Contact Using Just 100 Watts
Вставка
- Опубліковано 3 жов 2022
- This thing is great, I was super impressed with the coverage and the signal reports I was getting. Its been a long time since I've worked that many Japan stations. The MFJ-2012 Off Center Fed Dipole is a joy to operate!
👉 Get yours: geni.us/a19c
👉 Weaver Storage Cube: geni.us/PgITAr
👉 Throw Weight & Throw Line Combo: geni.us/EwVNX3
Click the 👍 Like Button, 🤡 Leave a Comment, ❤️ Subscribe
👉 Support The Channel 👈
❤️ Patreon: / temporarilyoffline
📺 UA-cam Memberships: ua-cam.com/users/temporarilyof...
💸 Tip Jar: paypal.me/temporarilyoffline
🧰 Gear I Use: kit.co/TemporarilyOffline
🛒 Amazon Link: www.amazon.com/shop/temporari...
📻 $15 off at Radioddity: radioddity.refr.cc/temporarily...
👉 Fun Stuff 👈
👉 TOADs Discord: / discord
🕊️ Twitter: / kilomike9golf
😸 Github: github.com/TemporarilyOffline
Where possible, all links are affiliate links, this youtube thing is an expensive endeavor and every little bit helps. - Наука та технологія
![ОРБАН приехал к ПУТИНУ и "отчитался" о поездке в Киев 😁 [Пародия]](http://i.ytimg.com/vi/_0ukDovOWq8/mqdefault.jpg)
What is your furthest contact? What Antenna?
from Boston NY, new Zealand 10 meters FT8. appx 400 watt AL 572 amp IC 7300 . gen set in a camp cite . tents on the air 73's
@@robertmeyer4744 that's awesome!
I made an 8320 mile contact the other day
With the X6100 20meters ssb
Texas to Australia
Out of a 20m hamstick hammered into my yard with some ground radials
All on 10w at sea level
Absolutely blew my mind
Im now hooked on QRP
That is most excellent!
Great video Steve, thank you so very much for sharing.
Thank you for watching, it was my pleasure!
I haven't used an OCF dipole, since I primarily operate portable (POTA/SOTA). But this antenna has been on my DXE wishlist for months now. I absolutely love the Weaver cube for the throw line and weight. It makes it so much easier to pack up and deploy. Thanks for another great video review.
You're welcome Mike! Glad you liked it.
Thanks Steve. I've used a 2012 for a few years now, it's a great "set it and forget it" antenna if you can get it high enough. Glad you showcased its strength. Per MFJ, it was designed by Rick Littlefield K1BQT when he was an engineer for MFJ. I contacted him for more specifics on the antenna, and he told me that while in his original design published in QST he used a 2.8:1 binocular transformer, the MFJ model uses a 2.8:1 autotransformer. He said that he discovered that a 2.8:1 autotransformer had lower loss and better SWR than 4:1. His past QST articles are worth a look, as he is quite the designer! Cheers, K7KS
That is really neat. I think that transformer design is pretty slick! Thanks for the extra info.
I've been running a Palomar 6-80m, 1500W, OCFD for my base station, set at 33' in an Inverted V installation. First DX was Australia. These antennas are easy to setup and work Great! I'm going to get the MFJ OCFD also!
I was really impressed at how well it did. Thanks for watching.
I use this as my main HF antenna. The feed point at the apex of the roof and each leg follows down the roof, with the longer leg folded 90degrees at the bottom corner to keep it fitting in the attic. The result is an inverted V with dogleg, compromised by the roof. Despite this, performance is excellent, with contacts on ft8 ar 25W from the US east coast near DC south all the way to Chili and past eastern Eastern Europe to Oman. I have one mainland Australia and one Japan in the other direction.
Very nice! It's amazing what these wires can do!
I had that antenna for a while and had excellent results. Had it at 30' flat top. Only reason I took it down was to put up another OCFD that tuned more bands.
Taking down one OCFD to put up a better OCFD is the right answer
I've always wondered how good these were. Nice, I was thinking of one for a semi-permanent antenna.🍻🤓
I was really impressed!
Steve it looks like a pretty good antenna, thanks!
I'm pretty happy!
That throw line sack looks like it would work better than a flat rock found in the pasture creek.. lol.. thanks for sharing.
I think a pasture creek rock makes a better pet though.
@@temporarilyoffline HAHA.. Makes sense to me too... lol
I've had the 2010 lower power version of this antenna for four years now, and I've made solid 20m contacts to Eu and Au on only 20 watts from my G90 from southwestern Idaho.
The apex is at 23 feet. Both the 2010 and 2012 are excellent values.
I was totes impressed!
Agreed… very good and cheap antenna for 67 feet…
Use velcro or twist ties to hold the wire together for storage. There are also releaseable zip ties but they can be hard to find.
I've always found the challenge to using dipoles in the field is getting the legs around branches.
Great tips, thanks!
I worked Serbia from New Jersey… it’s 67 feet and I only have it up 16 feet… fantastic antenna… I bought another one for back up and some extra wire for repairs! Vertical antennas are just junk and expensive!
Excellent DX!
When i got my general I (last year) I bought the MFJ 2010 and it has served me very well. Well, until I broke the best branch on a tree. I'm not sure if I had it too tight on the branch or the branch was already compromised. Either way I need to get it back up there or continue to use my packtenna mini which has been pretty good.
Also, I don't remember if you said it, but the legs should should be greater than 90 degrees apart. Kisses
I don't think I said, can't say everything I want to... thanks for adding that.
That the antenna I have and use. I am in Boston NY . hour or so drive for me to Lockport. yes that wire turned black and green after 1 winter in NY. I did not6 get it up that high so I had to trim it. 1/3 to 2/3 cut. center fed is 1:1 cut. got it from MFJ and still sell it. I have THHN 12AWG on it now. and run power threw it. works great. used it portable. the short side into para cord to park bench ,long side with para cord on a DX commander pole lean into a tree. sloped set up. works and tuned great. I think 80 meters add wire. they have a 80 meter one not Shure if off center or not. 4:1 for off set center. 1/3-2/3 wire length . end fed is 49:1 and can be 64:1 changes cut length a bit. The spark plug antenna is a 64:1 . getting DX commander DX 50 green dipole wire he sells to put on it and outher antenna projects. DX commander made a end fed with a 64:1 and with 160 meters of wire. and got a tune on it. and close to ground. I thought about a loop on ground 160 meter with a 4:1 but no where to put it . some park ? 1 did a 160 meter center fed on the ground in a park in the snow . had to shorten a few feet to tune. got out great at night ! 160 a funny night band and for NY its opens in winter . summer is just to much noise to use. 73's
Thanks for the insights!
I am sure if you use like manual portable antenna tuner this OCF Dipole will perform well on the 75m Band
Yeah, I agree. I need to put a tuner on it and see what happens.
I have mine at 50 feet. As a flat top and my 7300 will tune 6-75 m with no issues
That's awesome. Setting it up flat top takes some effort.
@@temporarilyoffline yep. Drone helps a lot. Wish my 🎄 🎄 were higher but I have worked most of the world with it.
@@alansteiber3031 I love making contacts on antennas I've been told won't work!
Right now I am building a vertical with chain link top rail and aluminum tubing to see if it works. Will be about 42 to 43 feet tall. Should be fun
@@alansteiber3031 oh yeah, building antennas is always fun
Interdasting. You could basically use a bog-standard 4:1 and add a common mode choke just beyond it and get the same results if you wanted to homebrew one.
Yes. This is a modified version of the Carolina Windom antenna. Here are some homebrew plans: www.hamradiosecrets.com/windom-antenna.html
Did I miss you saying what the lengths are of the legs, or the OAL? I do not see it mentioned on the MFJ site. I was surprised it worked all those bands, that is impressive.
I didn't say the size of the legs, but it is 67ft total, should be around 80/20% split. Its a fun build. Take it to the extreme and make a "Carolina Windom"
Interesting. I wonder how sensitive the 6m match is to center height and V angle.
Nice review.
Thanks, I'll check it out the next time 6m is open (or next spring, whichever comes first)
Thanks To, Your awesome at explaining things. KO4HPC 73
Glad it helps out!
Respectfully, 100 watts on FT8 is enormous power. Even 25 watts (I never use more) is like fishing with dynamite. Maybe try 10 watts next time? You'll be surprised how far it'll go.
You're right - use the least amount of power to make the contact. I operate at all different power levels for all different applications. Thanks for sharing.
I had 2 QSO's with hams in New Zealand
Excellent!
100 Watts on SSB with a GAP
Challenger DX II. I am in Keithville, Louisiana. (6 miles south of Shreveport).
Gotta be 11,000 miles. 73. WW5MB
That's great distance!
How do you get that scope and meter set up?
You're gonna hate this answer, but on the 7300 I press menu-scope first, then I press menu-meter. If you mean the colors, I use OM0ETs video: ua-cam.com/video/318kS7SS_qk/v-deo.html
'Look at that sack'.
That's a mighty nice sack!
No sack toss ? 😉
I was ham-shamed, so left the toss out 😇
Working DX with 100 watts is no great feat, I've done it hundreds of times with 2 or 3 watts and a homebrew off center fed dipole.
2 watts! That's awesome!
My greyline looks a bit different 😂
Is that a TR in your thumbnail?
@@temporarilyoffline it is, my 1973 TR6
@@beaseac Very nice. I had a couple of 66-67 MGBs. Lots of fun.
@@temporarilyoffline they are, I love old British cars!
Off Center... No wonder your signal was 30 hz off
Right! I've always been a little odd.
100w not so impressive, it's your EIRP and bandwidth of signal.
Exactly! Glad you caught that.
When I first got my General license, I asked around, and read a bunch, trying to figure out what my home base station antenna was going to be. A ham on a facebook group recommended an OCFD, and said he had managed to work the whole world / every continent with it. Gigaparts was selling the RadioWavz DX80 at the time, I ran that up in a tree outside my house and it's been there for almost 2+ years now, and I've managed SSB contacts on every continent and over 100 countries. I do not own an amp, it's just 100 watts and that antenna. I can't recommend an OCFD enough. 73 de KD2TJU
You're right Todd, this is a great antenna as you've proven.