The PAC-12 vertical antenna is a great antenna. I received mine yesterday. The wire they give you for a ground radial system is around 27 feet. It's a non resonant length for 20 or 40 meters. Plus, the ribbon cable should be split into 10 lengths and spread our around the vertical. Cut five of the wires to a length of 16.5 feet for 5 each quarter wave 20 meter radials. What I did was to make my own radials. I made three each 35 feet long radials and three each 16.5 feet long radials. I spread them out around the base of the vertical and on both 20 and 40 meters my SWR went down to 1.2 to 1 SWR. My reading was taken at the feed point of the antenna. What you did was a quick and simple setup and that's great. My point is by working a little with the radial field you can greatly improve the performance of this antenna. Nice video, glad you posted it. Barry, KU3X/QRP

@Martin_Lynch

Жыл бұрын

Hi Barry, many thanks for the great comments. You are quite correct, sorting the radial field will certainly help with the performance.

@darylcheshire1618

Ай бұрын

The few youtubes on this aerial say the ribbon cable is the weakest design and one guy made his own loop connector with four wires comming from it.

The build quality looks outstanding. I'd love that tripod as an accessory itself!

Its a great wee antenna system , you should get the ground disk which gives you 16 points to mount 16 ground wires , i get 1:1 on 20m no matter where i mount it using the add-on ground disc

Fellas, a line isolator is also needed on that coax before entering the radio otherwise the coax outer braid will act just like another radial which in turn will skew swr readings.

Thanks for this, looks very much like a new and improved Buddiepole.

The dipole and coils look like an improved version of a Buddipole especially the center connector or versa-tee.

@bobgerzoff5072

2 жыл бұрын

Exactly what I was thinking. The sections even sound the same as they clink. I wonder if the parts would be interchangeable? 73, Bob WK2Y

@adventureswithsteve2981

2 жыл бұрын

@@bobgerzoff5072 10mm thread

@bobgerzoff5072

2 жыл бұрын

@@adventureswithsteve2981 I guess not. Thanks.

Great video made - Thanks folks!

Brilliant! love the JPC-12! and expertly explained too! 👍👍👍👍👍👍

I thought i'd post a little review on the JPC-12 as i'm pretty impressed with it, but can't seem to add a review on the website. I purchased it, as it's quite 'stealth' and suits my QTH situation. I must say, i'm more than chuffed with it's performance. In just under 2 months i have worked 57 countries, with about 470 QSOs mainly on 20m, and receive great audio and signal reports infinately more often than bad ones. "Very strong signal" and "great audio" are comments I have heard regularly. I run the Icom IC-7100 through it, and although i'd quite like an antenna that needs no adjustment to change bands, i require an 'antenna for small gardens' solution. I doubt if adding something like a Diamond BB7V will perform well enough to justify the spend, once I add in a tuner too. It's more efficient on 20m, which is unsurprising, but still performs well on 40m. I've started to work 20m of a weekend, then adjust the antenna to 40m for operation during weekday evenings, given the time of year. On SSB, my logbook includes Australia, Canada, USA, Iceland, Indonesia, Brazil and China, together with very regular contacts into pretty much all of Europe (for some reason, I find it difficult being heard in Greece, although I have worked Greek and Cypriot stations, but impossible to get heard in Turkey lol. I'm hoping additional radials, strategically placed, will help). After the first couple of weeks, I added 12 additional radials (Comet CGW-560 x 2, you'll need washers as the centre ring is larger than the antenna ground spike) and I really noticed a difference. So much so, i'm going to add another dozen, or find a radial plate and install more than that. My JPC-12 is permanently deployed in my small garden, and has so far withstood the windy weather of late, even with the whip extended. All in all, a brilliant product. Highly recommended. There's a picture of it in situ on my QRZ page. M0JYH

@Martin_Lynch

Жыл бұрын

Hello Nick, it's great to hear that you are enjoying the antenna. We have had numerous similar reports from our customers. These antennas are certainly very popular.

I added a LDG RU - 1:1 unun to the base of my jpc12 which helped bring the vswr down to near 1:1 on most bands, only been out with it once at the moment but it's looking quite a promising antenna.

@Martin_Lynch

2 жыл бұрын

Excellent Adam, many thanks for sharing that with us.

@briantrask8173

2 жыл бұрын

I have an LDG RU 1:1. How did you attach it? was it to the antenna with a short coax?

@nvrumi

Жыл бұрын

I thought about that too. I would use a common mode choke at the antenna feedpoint, particularly if I was running more power.

@adam-g7crq

Жыл бұрын

@@briantrask8173 sorry for the long wait for the reply, I use a double male pl259 connecter straight to the base of the antenna and the common mode choke.

How does this perform in comparison to the Super Antenna?

wonder if an all band coil would work with that

Ok that’s a pretty slick looking antenna.

@Martin_Lynch

2 жыл бұрын

Thanks Mike. Loved your Soldering Station video, most informative.

@hamradiotube

2 жыл бұрын

@@Martin_Lynch well thank you kindly

Did you connect the dipole, and get any results with it? SWR? RX? TX? Anyway, thanks from the left side of the Atlantic!

@Martin_Lynch

Жыл бұрын

Hello Fred, Yes, we have also tested the dipole (SSB, FT8 & CW) and it works very well.

the slider is extremely hard to slide either up or down. do you have a remedy to make it easier without breaking the slider?

After seeing this video today, I ordered the JPC-7 with tripod, which I do not see with the US dealers advertisements. The more expensive postage to US is understandable. Some comments have been that the JPC-7 compares to the Buddipole, maybe with some improvements. 73 de W2CH Ray, NH.

@Martin_Lynch

2 жыл бұрын

Raymond, many thanks for your order and support. We can confirm that the MyDel JPC antennas are well made with an excellent finish. We have tested them and found the performance to be great.

@GPSJayDog22

Жыл бұрын

What tripod kit did you order? N6WIP

@GPSJayDog22

Жыл бұрын

What tripod kit did you order? N6WIP

@raymondmartin6737

Жыл бұрын

@@GPSJayDog22 The tripod was part of my order from the UK. The mast with it extends nicely for the antenna. I did not see this tripod separately or from the US suppliers

@GPSJayDog22

Жыл бұрын

@@raymondmartin6737 I too found that. I was hoping there was a part number or manufacturer identification on the tripod/mast assembly. Thanks 4 responding. 73, N6WIP, Jay

How is it under rough weather conditions I.e mainly rain, would any of the parts need to be waterproofed or would it just be good to go to set up as is?

@Martin_Lynch

Жыл бұрын

This antenna will work just as well in rain or shine. There are no special requirements when it rains other than to waterproof the PL259 coax connector with good quality tape, just as you would any antenna.

I am surprised someone hadn't come up with that coil tap arrangement decades ago. Its quite simple. Other arrangements that can tap different points around the circumference may provide slightly better SWR, but not by much.

@markanderson8066

2 жыл бұрын

The sliding coil tap dates back to radio's early days. Crystal radios used them. Rorary coils have a slider like this, but instead of clicking back and forth, it turns the coil.

@MrBigShotFancyPants

2 жыл бұрын

My first home made receiver for school project used one. An empty toilet paper roll cardboard tube, coils wrapped by ✋. 9th grade

@haramanggapuja

Жыл бұрын

Some decades back I bought the Pacific Antennas (original) version of this antenna. I modified the coil to a slider & it worked great for me on the FT817ND. Back in the day . . . Guess it’s time to drag the old kit out & try it on the new IC-705! Thanks for the great review & run-thru! 73 de W8IJN

@TimGray

Жыл бұрын

They did. The Buddipole has done it for 2 decades.

Would hitting the spike with a mallet (eventually) damage the thread?

@Martin_Lynch

16 күн бұрын

We strongly suggest that you do not hit the spike with a mallet. We advise that you thread a nut, of the correct size, onto it and then have a piece of softwood to use between the spike & mallet.

remove the centre coil tuning unit and use only the four aluminium tubes plus the telescopic antenna, reduce the last section to approximately 10cm and you are ready to go on 15m after checking swr...and remove the centre coil and the 4 aluminium tubes and use the telescopic section straight onto the top of the feed point and adjust length for 10m. so all in all you have a quad band portable vertical antenna......super bit of gear, would'nt part with my one now..De EI7IAB

@Martin_Lynch

Жыл бұрын

Thank you very much for this fantastic advice.

Does the tripod come WITH the JPC-7 or is that a separate purchase ?

@Martin_Lynch

Жыл бұрын

Hello John, yes the 4m tripod is included with the JPC-7 antenna. www.hamradio.co.uk/mydel-jpc-7-dp-portable-shortwave-antenna-4m-tripod-included-pd-14765

What is the advantage of either antenna for portable operation, is one clearly a better antenna.

@Martin_Lynch

2 ай бұрын

One is a Vertical and the other is a Horizontal antenna. There is no way of knowing which will be the better antenna, its all about personal preference and the location.

@LiveFree-ij3hn

2 ай бұрын

@@Martin_Lynch Ahh that makes sense, thank you.

Пользуюсь такой в виде вертикала. Работая QRP, проводил межконтинентальные связи с Северной Америкой, Австралией, Новой Зеландией. Первое, что сделал - купил опционное "кольцо" для присоединения противовесов. На каждый диапазон по 3 настроенных радиала.

@Martin_Lynch

2 жыл бұрын

Yes, the more radials the better.

@sergeibelov573

Жыл бұрын

Скажите, а общая длина вертикала какая?. 4,1 метра ?. Вроде можно купить отдельно телескопическую часть длиной 5.6 метра, и тогда, по моим прикидкам получается 7 метровая антенна. Не пробовали?.

Hello, could you tell me the name and model number of the tripod to which the JPC-7 is attached? Thank you. thank you.

@Martin_Lynch

10 ай бұрын

Hello, the tripod we supply with the antenna is bundled with it and not available alone.

How did/would those antennas do on SSB?

@Martin_Lynch

2 жыл бұрын

We have tested both the Vertical & Dipole antennas with good results on SSB Voice and Data modes, this includes CW. The vertical JPC12 is an excellent choice for quick deployment portable / covert operations.

Do you know where I can find these antennas in the States?

@Martin_Lynch

6 ай бұрын

Hello Michael. We ship worldwide on a daily basis. Please email us, with the full delivery address, and we will reply with our quotation. sales@hamradio.co.uk

is the tripod available to buy seperate ?

@Martin_Lynch

2 жыл бұрын

Hi Bill, We are looking into sourcing the tripods separately.

Which is better? Something like this or a magnetic loop antenna?

@Martin_Lynch

Жыл бұрын

Well there is an interesting question.... There are numerous positives and negatives for Mag Loops, Verticals & Dipoles depending on the location of the antenna and the bands required. We are sure that some of our viewers would have opinions on the subject.

Hello, This is Oliver from Quanzhou Neway, May I know Mr.Martin still work for ML&S Martin Lynch & Sons Ltd.？

@Martin_Lynch

2 жыл бұрын

Hello Oliver, Yes, Martin is the boss.

@user-cu5to7sw2p

2 жыл бұрын

@@Martin_Lynch OK, We sent him emails, but his email doesn't seem to be used anymore.

@Martin_Lynch

2 жыл бұрын

@@user-cu5to7sw2p Please send emails to. sales@hamradio.co.uk

Can use it for Cb?

@Martin_Lynch

Жыл бұрын

Yes you can, provided that you tune it for the 11m band.

What is the tripod? Can you post a link?

@Martin_Lynch

2 жыл бұрын

Hi James the tripod is included with the JPC-7 Dipole

@Martin_Lynch

2 жыл бұрын

www.hamradio.co.uk/aerials-antenna-manufacturers-mydel-antennas/mydel/mydel-jpc-7-dp-portable-shortwave-antenna-4m-tripod-included-pd-14765.php

can these used as base station antenna?

@trainboss12

Жыл бұрын

i probably wouldn't want to leave it out in the weather

Does the mast section radiate?

@Martin_Lynch

2 жыл бұрын

It forms part of the antenna system, so yes it does.

awaitng the start m0kll

That looks great - 73 de GI8WFA.

I am looking for about your product place lace me a message . When I post this , I am looking for more information no this. Find this at much they run . In for thing have out there

@Martin_Lynch

Жыл бұрын

Hello Edward, Please find links here for further information about the popular JPC antennas; www.hamradio.co.uk/mydel-jpc-12-portable-shortwave-antenna-kit-10m-coax-included-pd-14764 www.hamradio.co.uk/mydel-jpc-7-dp-portable-shortwave-antenna-4m-tripod-included-pd-14765