Тёмный

17' Whip Resonant ~ NO Antenna Tuner Needed! ~ QRP Mountain Topper MTR 3B 

Ham Radio CQ
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🔥 Weller Solder Iron: amzn.to/35aUqm0
🔥 MP1 Tripod Mount: amzn.to/2Hdjz7j
🔥 Wire Strippers: amzn.to/37peVhy
🔥 Portable Speaker: amzn.to/2VNK2v4
🔥 In Line Volume Controller: amzn.to/3iDIj6w
🔥 Terminal Set w/ Crimp: amzn.to/34dwYFi
🔥 Shrink Wrap Wire Set: amzn.to/2HeZYUv
🔥 UHF Adapter Kit: amzn.to/3HYZDSg
Chapters:
00:00 Intro
00:12 Discussion
02:46 Making Radials for 20M
06:49 Field Test
08:38 SWR Reading
10:35 Call CQ on Air!
13:01 Reverse Beacon Results
13:47 Live QRP CW QSO Begins!
24:09 Summary of Everything
25:13 Summary of Results
17 foot whip
Mtn Topper 3b QRP LNR Precision trail friendly
LNR Precision. The Mountain Topper does not have the European CE mark, thus European customers that this affects should not purchase if this is an issue for you. At this time, we will not be offering this as a modified kit as we did for the original Mtr3b.
The Mountain Topper Rigs are designed to be a very small, light weight, very battery efficient, multi-band CW rig suitable for field operation. The small size and low weight make this rig ideal for SOTA operators and backpackers.
● 3 band operation - 40/30/20
● Wide power supply operation - 6V to 12V
● Low operating current - 20 ma @ 6V, 15 ma @ 12V
● 5+ Watts out at 12V supply, 2.5-3W at 9V supply
● Easy to read 2 line LCD display with back lighting.
● Push button tuning and audio limiting eliminates protruding knobs.
● Iambic B mode keyer, 9 to 31 WPM range in 1 WPM steps.
● Three, 63 character message memories with beacon mode.
● Optional decoding and display of Morse being sent via paddle. Know you are sending good code.
● Built in 24 hour real time clock.
● Battery back up restores last used settings on power up.

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27 июл 2024

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Комментарии : 110   
@danielzdanowicz6899
@danielzdanowicz6899 3 года назад
Great Video. I use the MFJ-1979 with one suspended counterpoise on a 3 foot wooden dowel as a resonant half wave bent vertical dipole. 7000 miles QRP. It works awesome. To tune to resonance just roll in or roll out counterpoise a few inches this or that way to perfect SWR. With the Rig Expert AA50 Analyzer is takes five minutes and you have a perfect antenna. Also switch bands works quickly too. I marked the whip for the various bands from 20 up and just pull out to the mark, Put some shrink tube on the counterpoise and just roll out to the specific marker. The rolled up counterpoise work like a choke and so the rig does not see the coiled up wire on the kite winder. Try it you might like it. Less ground loss with no ground radials and no rats nest with the radial wire(s). To go down to 40 and 80 I use the Wolf River Silver Bullet 1000. It is a great minimal field antenna that work relatively well, as you have proven. Thanks for the video.
@hamradiocq
@hamradiocq 3 года назад
Great comment I like hearing your story about using this style antenna!
@hectortobias8840
@hectortobias8840 2 года назад
Instablaster...
@davidtheriault7652
@davidtheriault7652 2 года назад
Thanks for doing the build and video. Appreciate the words with the CW. I was following along trying to relive my AF CW days. 73 KO4KHb
@Bob814u
@Bob814u 3 года назад
I have been working to learn CW for a while. It is funny as I was listening and looking at the letters my fingers were twitching to the beat like there was a key (pico) there. Once I realized it, it was funny. Love the videos!!! Well done!
@hamradiocq
@hamradiocq 3 года назад
That's hilarious, awesome comment. I have this weird habit, whenever I see a sign or lettering I do CW in my head to tap it out. It comes from many hours of practicing that way when I'm bored.
@wushock92
@wushock92 3 года назад
Good video, Tommy! Good timing too as I"m thinking about adding that 17' whip to my portable arsenal. 73
@hamradiocq
@hamradiocq 3 года назад
Well, what I was looking for was a rapid deployment antenna. I'm always looking for an easier HF setup on the road. I think this thing is golden. Next thing I'm going to do is add a coil to it and test out 30 and 40 meters.
@DonDegidio
@DonDegidio 3 года назад
Hi Tom, That was a nice QSO. Glad that Chameleon whip worked out so well. I think those radials helped. Looking forward to their use out in the field. You and the family stay safe. 73 WJ3U
@hamradiocq
@hamradiocq 3 года назад
Thanks so much Don. I think this is the rapid deploy antenna I have been looking for. 73 N9YO
@WKMG365
@WKMG365 3 года назад
Excellent video and QSO. I used to live and run EMS in that area of NJ. Cool to see you make a contact with someone from my old area. I’m in TN now. I added your call to ham alert to try to catch you on the air. Good luck!
@hamradiocq
@hamradiocq 3 года назад
Very cool! ha! Thanks so much for the comment WKM.
@F8FCA
@F8FCA 3 года назад
thank's for video Tom , Always like to see ur qrp experience 73
@hamradiocq
@hamradiocq 3 года назад
More to come!
@Linas_LY2H
@Linas_LY2H 3 года назад
Perfect test! This is a very good quality whip! I use the same with great success mounted on my Radio Van with one elevated counterpoise. For 40 and 30 m bands I load the whip at the base with the MFJ coil, also no tuner required. And it stands perfectly full 100W from my FT-891 trx. I also made a video and put it on my YT channel , I thought it could encourage other people to use this simple set-up in their ham radio activities! BTW I also use the Begalli Traveller :)! 73! Linas LY2H
@hamradiocq
@hamradiocq 3 года назад
Great comment too, man you and me know what's goin on. I'll def check out your radio van!
@4428314
@4428314 3 года назад
This is just so good! I have been thinking about that seventeen foot antenna for a good while. I must have one. Thank you for your time and patience in making your videos. 73. KG5OBD
@hamradiocq
@hamradiocq 3 года назад
Glad it was helpful! I think this is the key to rapid deployment antenna I was looking for.
@OkieProductions
@OkieProductions 3 года назад
I like the cinematic shots. its a nice change of pace in the video. good job on the 1.02swr.
@hamradiocq
@hamradiocq 3 года назад
Thanks! That 1.02 was shocking. I figured I"d have to mess around forever (Like I have had to do with wires before). The cinematic shots, I hope, are there to show (entertaining) closeups of the stuff I'm using. I do that because it's exactly what I also want to see when I watch other videos. I want to see the equipment. T
@OkieProductions
@OkieProductions 3 года назад
@@hamradiocq lol. ya. I film everything in 120P so i can slow it down. lol. Life is much better in slow mo. lol.
@k6kwi
@k6kwi 3 года назад
I have been using an MFJ-1979 for a number of years for portable. I made a ground mount with four 16’ radials. It’s spot on for 20m. I have had 12,000 mile QSOs on that antenna, NZ to the UK. It’s simply my best 20m portable antenna! Excellent video!!! 73, K6KWI
@hamradiocq
@hamradiocq 3 года назад
Right on! I just discovered this. Much more to come. I cut 40 meter radials at 1/4 wave. Can't wait to get back out there.
@larrytruesdellsr.809
@larrytruesdellsr.809 3 года назад
Thanks for the videos. I have no hf gear, so it is nice to hear cw gso's
@hamradiocq
@hamradiocq 3 года назад
Glad you enjoy it!
@survivaloutdoors9694
@survivaloutdoors9694 3 года назад
THANKS FOR SHARING YOUR LIFE ON RU-vid.
@hamradiocq
@hamradiocq 3 года назад
My pleasure!! I almost feel a Need to share everything. Is that weird?
@davidsradioroom9678
@davidsradioroom9678 3 года назад
@@hamradiocq No! We are glad you do share!
@joecraft4409
@joecraft4409 3 года назад
I was thinking that heart shrink would be great. You're a thinker, nice job brother!
@hamradiocq
@hamradiocq 3 года назад
Thank you! Cheers!
@ae1tpa92gwtom2
@ae1tpa92gwtom2 3 года назад
Nice one Tom, I have the same whip, but never attached a counterpoise/radials, will do on my next outing, cheers n 73
@hamradiocq
@hamradiocq 3 года назад
Yeah, it makes a big difference I think to 'balance' the antenna
@larrytruesdellsr.809
@larrytruesdellsr.809 3 года назад
That was the best bug I have heard.
@hamradiocq
@hamradiocq 3 года назад
I know right. He was very easy to copy.
@k2jwd
@k2jwd 3 года назад
Impressive antenna array at K2FW (see his QRZ page) really helps his reception as well as transmitted signal (not to mention the 500w). I have the MFJ version. Used it with the WRC Silver Bullet 1000 on 40 SSB. Got 1:1 swr. Did a comparison with my resonant 80meter EFHW longwire and signals were about 2 S Units lower on both receive and transmit with the whip. Have fun with it. Thanks for the video. Mel, K2JWD
@hamradiocq
@hamradiocq 3 года назад
Thanks, Melvin!
@BRENT3143945
@BRENT3143945 3 года назад
Your call sign on the radio in the intro was pretty cool.
@hamradiocq
@hamradiocq 3 года назад
Oh I bought that at a craft fair rusty old letters.
@Peacemaker29073
@Peacemaker29073 3 года назад
Great video.
@hamradiocq
@hamradiocq 3 года назад
Thanks!
@ellisc.foleyjr9778
@ellisc.foleyjr9778 3 года назад
Another great video Tom, I'm sure you are aware of this fact, but just in case, keep in mind when evaluating ur antennas. when you are working someone with a yagi even if they are not running pwr the gain of their antenna is gong to make a significant difference to your qso/signals. vs working someone with an antenna equal to yours. in short their antenna makes yours look better than it might be. But still a nice video and informative antenna as to what your antenna is. what you did to make it perform. well done! keep em coming enjoy them a lot. 73 gud dx stay safe to you and the family. de Ellis/WA1RKS
@hamradiocq
@hamradiocq 3 года назад
Well, yeah, I addressed he had a great antenna in the end of the video..... 25:20
@sphexes
@sphexes 2 года назад
Kite string winders for those radials!
@hamradiocq
@hamradiocq 2 года назад
Great idea friend
@johnmarron1944
@johnmarron1944 2 года назад
Hi tom great vid i have got the same antenna and did an experiment with the radials on mine I had 4 connected and did a few reverse beacon tests then did a few with just 2 radials running east/west and another with just 2 radials running north/south and reverse beacon tests on all different configurations absolutely no difference the hits were pretty much the same. So it actually only needs 2 radials down for same result. I do have my radials 6ft going along garden fencing in the horizontal position..regards from England Tom. And 73 john m0asn
@hamradiocq
@hamradiocq Год назад
Great idea and thank you for watching!
@kb5hxt
@kb5hxt 3 года назад
Great vid, the antenna is probably what I will purchase for portable op''ing. I am re-learning CW, hope to be on the air soon. Due to HOA, am using EF-wire, mounted on top of the wooden privacy fence, so NVIS ant, and it's bent in the middle. Not running a counter poise, will try to piece one together and relocate the wire to go up onto the roof and be straight. Recently build a QCX+CW transciever from QRP labs, but can't align it, there's a software hang up.... Hope to work you some day.... 73 & gud dx
@hamradiocq
@hamradiocq 3 года назад
Hey, Michael thanks for the comment. Yeah, I like this setup, it's easy to resonate and fast deployment. Much easier than messing with a wire in a tree like i usually do. Hope to CU on the air buddy. 73
@aurtisanminer2827
@aurtisanminer2827 3 года назад
I thought the title said 17 inch when I first saw it. Totally thought this was gonna be about 2 meter ht’s. Lol
@hamradiocq
@hamradiocq 2 года назад
: )
@Oscaro9928
@Oscaro9928 2 года назад
I just got the chameleon 17’ whip. Got 20% off due to 4th of July sale. How is that traveler for portable (SOTA/POTA)? I was also looking at their adventure key since I have an ic705.
@miker1473
@miker1473 3 года назад
I second the comments about a single, elevated, tuned, counterpoise. I also use a wolf river coil to work 30, and 40. I use a bigger tripod, that has a 2 section vertical post. Gets me up to 6 feet above ground. Tuned counterpoise is on a kite winder. It's white wire, marked to resonant points with a sharpie. The end is hung on a 4 foot fiberglass driveway marker. Stick it in the grass angled back, to tug the counterpoise slightly, to keep it from sagging.
@hamradiocq
@hamradiocq 3 года назад
Hey, Mike. I hear where you are going with this. First off, what tripod do you use? I'm thinking about elevated counter poises, but how to? Remember, I'm looking for fast and easy. I want to get on the air at a park or on a vacation in minutes. I've done the thing where I mess around with wires in trees for 20 minutes and it's frustrating. In and out. Thanks for great comment friend, 73.
@miker1473
@miker1473 3 года назад
@@hamradiocq Hi Tom. Yes, fast and easy is good! I just use a single tuned counterpoise. I suppose the more you put out, the better it'll work, but....I've never failed a pota activation running just one. The higher above ground you get, the better. Less ground losses. However, if you get it tuned up down where you can reach it, running it up too high will change the tuning. Fast and easy just went out the window. I found 6 foot wasn't going to change it that much. I don't do QRP, so, I'm all over the band. Some SSB, some CW. So, I just marked my counter poise for center of the band tuning, and touch it up with the built in tuner on the 7300. I have 60 ft of LMR400 coax attached and weather sealed to the jaw clamp mount, on a round extension cord winder. I have the kite winder with counterpoise attached to the 4 ft driveway marker. I take out the tripod, run the coax, attach the jaw clamp, screw on the antenna, attach the counterpoise and unwind and stick the fiberglass marker. Plug in the coax to the radio, and go. 10 min would be a "problem spot", where I'd need to adjust for the size of the location. Just stretch your counterpoise out towards the direction you want to favor. There is a slight rf lobe in that direction...but not much. I've always made contacts off the "back side" as well. Here are a few links to the equipment. Any stage speaker stand will work. Bigger ones tend to have a wider base. Learn how to tie a self locking truckers hitch, and you can quickly guy a smaller tripod. I forgot to get a link for that, before I started....can't do it now...lol. I can make you a video. It's an indispensable knot for a radio op. I've guyed 40' poles with that knot for over a year, and it ties in seconds. It's a knot and a "come along" all in one. OK....here's the gear: Tripod www.rockvilleaudio.com/rves05/?gclid=Cj0KCQjwuL_8BRCXARIsAGiC51A92ZPM8Vq4U66qGpcXc11Mewi_pUTE2Kp-QbLRnBgGzxLpzGm-q20aAq3jEALw_wcB Wider base www.sweetwater.com/store/detail/SS7762B--on-stage-stands-ss7762b-speaker-stand-with-adjustable-leg-single?mrkgadid=3248788045&mrkgcl=28&mrkgen=gpla&mrkgbflag=0&mrkgcat=livesound&lighting&&acctid=21700000001645388&dskeywordid=92700046934980829&lid=92700046934980829&ds_s_kwgid=58700005283820789&ds_s_inventory_feed_id=97700000007215323&dsproductgroupid=373841928163&product_id=SS7762B&prodctry=US&prodlang=en&channel=online&storeid=&device=m&network=g&matchtype=&locationid=9005565&creative=226299461198&targetid=pla-373841928163&campaignid=953755110&gclsrc=aw.ds&&gclid=Cj0KCQjwuL_8BRCXARIsAGiC51B_BhiVXSj6r5ru4oWwkUJvlhL2DFChHwCLSZg70zPyDAbPSfKvixYaAkiMEALw_wcB Jaw clamp www.walcottradio.com/qrcs3-quick-mirror-antenna-mount-p-267.html?Shopping%20|%20Sales%20|%20Cadabra%20Digital%20|%20March%202020%20|%20High%20Performing%20States&AdPos=&device=m&GeoLoc=9005565&placement=&matchtype=&network=u&keyword=&gclid=Cj0KCQjwuL_8BRCXARIsAGiC51BqxOwwE11YPcpDUqvNY_TYR0BRGwSbwAtD697vtVQprbEkdQm1JooaAuvCEALw_wcB Shoot me an email off QRZ. I can send you a few "1000 word pictures". Callsign N4ZN
@thuff3207
@thuff3207 3 года назад
Thank you for showing to me I like my shock cord whips for this same height. There are more robust. On radials they just improve antenna efficiency. If you elevated with that few would help.
@hamradiocq
@hamradiocq 3 года назад
Yeah, I have some shock cord whips also from Chameleon. I might test those out as well.
@thuff3207
@thuff3207 3 года назад
@@hamradiocq IF you can elevate the radials since you have 4 that improves efficiency.
@RobPetty622
@RobPetty622 3 года назад
Chameleon mil whip vs. Chameleon telescopic whip. That would be a great comparison. Then send it to Carl at Chameleon or post it to the Vertical Antennas FB group that he is an admin for, and you’ll get way more exposure for your channel.
@thuff3207
@thuff3207 3 года назад
@@RobPetty622 I have not tried the Chameleon but I have the Rigid Shock-cord Adjustable Whip from buddipole. They work for my very well.
@gt3940
@gt3940 3 года назад
@@hamradiocq tractor supply has 4' fiberglass poles for $1.99 each and the have 4 levels of wire holders on them , if you got eight of them it would be about $15.92 plus tax. since they have 4 levels you could tinker for the best SWR. just type in "Electric" and the electric fence option will come up in the search box of their web site or look for SKU: 360223399
@markno5s161
@markno5s161 3 года назад
Another great video Tom. Nice rst for 3 watts ! Can you give some more info on those wire strippers ?
@hamradiocq
@hamradiocq 3 года назад
I do believe this is where I got them: amzn.to/37peVhy
@donizzo8884
@donizzo8884 3 года назад
Nice job! - W1FYG
@hamradiocq
@hamradiocq 3 года назад
Thanks Don. I like this setup.
@va7dgp
@va7dgp 3 года назад
I use 4 19 ft radial with my Alpha Ez Miltary Antenna. Works great with Winlink
@hamradiocq
@hamradiocq 3 года назад
Nice 👍
@radioactive8772
@radioactive8772 3 года назад
Keep an eye on your swr when using a long whip. My mfj 1979 has a section that is loose and it slips and gets shorter. I use some tape to hold it. Thanks KG7CQG.
@oldpreach
@oldpreach 3 года назад
I've heard some reports of this. 2 years in with mine and thankfully, no loose sections yet.
@hamradiocq
@hamradiocq 3 года назад
Thanks for the tip! This one is pretty darn tight for now.
@ellisc.foleyjr9778
@ellisc.foleyjr9778 3 года назад
Hi agn Tom No my bad, I came down below to comment right after the part where you said you were so excited., I wanted to inject the comment I did so you would not be disapponted when and if you found out the difference. so you already did. Tnks for the reply and keep up the good work, and your cw format is getting much better. tnx agn will look forward to yournext video tnx 73 stay safe.de Ellis WA1RKS
@hamradiocq
@hamradiocq 3 года назад
It's fine no worries friend. I went out of my way to record that last section once I found out what gear he had.
@DAprod615
@DAprod615 3 года назад
Love my chameleon antennas. Get the extension to put it at 28 plus feet.
@hamradiocq
@hamradiocq 3 года назад
I have it. I fear it would be come a fall hazard without a hefty base.
@DAprod615
@DAprod615 3 года назад
@@hamradiocq haven’t had that issue happen yet. I do drive the spike until 2-3 inches are viewable. Love the videos and the personality. Keep it up.
@ralphnunn3
@ralphnunn3 3 года назад
Interesting. I worked him, too, about 3 weeks ago. I also agree with one of the commenters here - you really could not tell that he was using a bug!!! I don't think it was a Vibroplex, however that he was using, because he told me that it was an Italian bug (Begali, I'm guessing??) Also interesting that he hit me about 579 in Utah, while another station I worked on the East Coast hit me about 339. I'm sure that antenna array (and the power level) was the reason... I see that you guys exchanged SKCC numbers. However, I don't think that counts as an SKCC contact, because you were using a paddle. I was, too when I worked him, and I let him know that I was. Just an FYI there... Anyway, great video. Thanks for sharing!!! Ralph Nunn - K7RLN
@hamradiocq
@hamradiocq 3 года назад
I could not tell it was a bug also! He was very easy to copy. Interesting comment you just posted, I emailed him this comment.
@stevenbutler9191
@stevenbutler9191 3 года назад
Great video keep them coming and out of interest what was the swr on the voice portion of the this band 73 2e0zwz Steve.
@hamradiocq
@hamradiocq 3 года назад
Sorry I didn't try that yet.
@hcy0
@hcy0 3 года назад
Amazing. 73
@hamradiocq
@hamradiocq 3 года назад
Many thanks!
@Johnyrocket70
@Johnyrocket70 2 года назад
Super antenna sells counterpoise wire in bulk.
@hamradiocq
@hamradiocq 2 года назад
Thanks for the info, I'll be buying it
@dangermandave67
@dangermandave67 2 года назад
What formula do you use to estimate the length of radial needed for your chosen band?
@hamradiocq
@hamradiocq 2 года назад
I google antenna radial calculator and there are several out there for a given frequency.
@oldpreach
@oldpreach 3 года назад
Mfj-2286 takes the place of all these other vertical set ups (10-40) for a fraction of the price. $99 for the 17ft whip, radials, coil and bracket.
@hamradiocq
@hamradiocq 3 года назад
Your antenna is $120 on DX Engineering. The bracket it has requires a mount to something (still), mine does not. And it requires a coil and taps to worry about. My point in this 14.060 video is rapid deployment, easy to use and that antenna is versatile and effective.
@oldpreach
@oldpreach 3 года назад
@@hamradiocq I hear you. You can set up the 1979 with no coil for 20 like you did...or put it with your WR Coil for 80. Lots of possibilities. I was just throwing that out there. I paid 99 at hro about 18 months ago. Didn't mean to sound curt. You do an amazing job, and take lots of time on your videos which I appreciate and get lots out of.
@joecraft4409
@joecraft4409 3 года назад
What if you added the other radials, would it support resonance on 40 meters.
@hamradiocq
@hamradiocq 3 года назад
No I think it' not long enough. Would need a coil.
@paulaubuchon2336
@paulaubuchon2336 3 года назад
What was the final adjusted length if the whip?? Paul. K1YOU
@hamradiocq
@hamradiocq 3 года назад
I believe it was 1/4 wave.... at 20M if I remember right. so 5 Meters.
@paulaubuchon2336
@paulaubuchon2336 3 года назад
What formula did you use for coming up with radical lengths?? Paul K1YOU
@hamradiocq
@hamradiocq 3 года назад
I believe it was 1/4 wave.... at 20M if I remember right. so 5 Meters.
@TridentMissileTech
@TridentMissileTech 3 года назад
I know in the video you said 4 more radials. So how many toatal? Im thinking 8. And did you end up with 17ft or 16.5.
@hamradiocq
@hamradiocq 3 года назад
So 4 does really well. For me, I want to set it up in the field quickly so 4 is enough. It depends on how much you are willing to spend time on. 8 is probably better. 16 better. But remember how tangley these things are. I get frustrated spending a lot of time setting up.
@mfhepp
@mfhepp 2 года назад
You seem to be using a pretty long 50 Ohms coax when measuring the feedpoint impedance. Note that any mismatch from 50 Ohms, which is likely due to the sensitivity of ground systems of a vertical etc, will be obscured by losses in the long mismatched coax from the antenna to the analyzer. You will be better off attaching a VNA directly at the feedpoint. Or at least the antenna analyzer.
@hamradiocq
@hamradiocq 2 года назад
agreed
@Stuff_happens
@Stuff_happens 3 года назад
Sorry, maybe my up at 0300 brain is affecting me. Where did you get that 17’ telescoping antenna? And is the super antenna just an adaptor for a tripod, and a place to screw in the antenna attach the radials? Also, a 17’ telescoping whip sounds problematic. Time will tell.
@hamradiocq
@hamradiocq 3 года назад
I got it at Chameleon antennas. The super antenna is a full system, but I was using the base mount for it to hold this 17' telescope. The whip is easy.
@MrLittlmike22
@MrLittlmike22 3 года назад
amazing video ! great content as always - could I ask how long your feedline is - would that make a difference ? 73s to you
@hamradiocq
@hamradiocq 3 года назад
I think it's 40 feet, and I do believe it does make a difference.
@MrLittlmike22
@MrLittlmike22 3 года назад
@@hamradiocq that's great thank uoi
@tommyboy9998
@tommyboy9998 3 года назад
GP rox!
@hamradiocq
@hamradiocq 3 года назад
GP?
@warplanner8852
@warplanner8852 3 года назад
Not to diminish your efforts nor your video but the resonant length of an antenna is 234 divided by the frequency in Mhz. Thus, 20m would be about 16 feet 6 inches and four radials of about that length would be adequate. Additionally, you could use the antenna on 17m, 15m, 12m, and 10m by shortening the whip. Inductance increases the electrical length of an antenna which is why you use the coil. It's not magic, it's science.
@hamradiocq
@hamradiocq 3 года назад
Sure seems like magic...keeps me interested.
@mikebarnes9858
@mikebarnes9858 3 года назад
Great video...Your blue handle crimpers in video ...where can I buy them? 73 KJ7AQB
@hamradiocq
@hamradiocq 3 года назад
Thanks so much! I always put products in links in video description. Terminal Set w/ Crimp: amzn.to/34dwYFi
@dyolf1000
@dyolf1000 10 месяцев назад
FB. 73 de KI7GIE.
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