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How to use automatic tuners for high power amateur radio operation 

QSO Today Academy
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Dave Jensen and Steve Bennion are part of a growing trend in the amateur radio community. Licensed more than 50 years ago, both Steve and Dave came back to the hobby during the pandemic and haven’t regretted it.
Over the last few years, both have met and spoken to many others who have dusted off their gear and gotten back on the air. It is clear that many hams share the same interests when it comes to improving their stations.
100 watts and a wire was great for a time. But 100 watts just doesn’t cut through the noise, and another growing trend has emerged as a result.
Despite the improvements from our current solar cycle, an increasing number of operators are looking for additional power and have acquired linear amplifiers. There is a large and growing wave of operators powering up to an average of 800 to 1000 watts.
Of course, in that process, all the other elements of your station must line up to achieve the benefits of this increased power, and that may include new antennas that then require an antenna tuner. Dave and Steve found out that despite how nice it is to have an antenna that works on multiple bands, none of them are perfect, so they investigated the market for automatic antenna tuners that will handle a Kilowatt. We're not talking about tuning up a coat hanger or trying to send RF into a 10-to-1 mismatch. The goal of this session is to review the market and discuss three major sellers in the category and how they have performed in two shacks at a Kilowatt.
This presentation was made at the QSO Today Virtual Ham Expo. For more information go to: qsotodayhamexp...
Also visit the QSO Today Podcast for 1 hour interviews of ham radio operators who make these presentations: www.qsotoday.com
#hamradio #amateurradio #antenna

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7 сен 2024

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Комментарии : 8   
@W8ASA
@W8ASA Год назад
Flex DOES support fully automatic operation as you describe it. For my Flex 6400 and MFJ-998 combo, I hit the tune button on the Flex SSDR program. It sends a lot power signal to the 998, which automatically tunes. Then I release the tune button and the radio automatically reverts to higher power output. W8ASA
@mikemcdonald5147
@mikemcdonald5147 Год назад
I believe the Yaesu ftdx 10 works automatically. It tunes at a lower power then goes back to full power once done tuning.
@jochenkrebs9685
@jochenkrebs9685 Год назад
The general question should be how much heat is produced in such tuners with 1KW and an antenna SWR of 3:1 and worse. And how long does it take to smoke. Why don't you do the key-down test and show what's really going on. Greetings from DL DH1KJ Joe
@Capecodham
@Capecodham Год назад
Are the characters in focus?
@qsotodayvirtualhamexpo
@qsotodayvirtualhamexpo Год назад
The quality of the video from the Restream system is not the same as the original video submitted, now that I am comparing. There seems to be some quality loss when we record a Restream broadcast. Thanks for bringing it to my attention.
@michaelzehrfeld7766
@michaelzehrfeld7766 Год назад
..I wonder a bit why no one mentions a deposed mast tuner. With all these tuners installed in the shack, you still have the disadvantage, especially with multi-band antennas, when matching on different bands alone that you have to match the feed cable with - partly quantity losses and the risk of jacket waves. I work with a Stockcorner JC4s - this is installed directly at the bottom of the mast. From its terminals I go directly into a 9 meter long two-wire line - and then directly into the two legs of the 2 x 18 meter long inverted vee. This works great - I don't have to match any feeder cable - and the antenna goes from 10 - 80 meters with very good success. 160 meters is also possible - of course not with such great efficiency - but it works... Shack tuners - yes - of course this is also possible - but I have made the experience that antenna tuners, if they are installed directly in the feed point of the antenna - work much better than from the shack itself.
@qsotodayvirtualhamexpo
@qsotodayvirtualhamexpo Год назад
I agree 100%. I have an LG remote tuner at the bottom of the mast in an outdoor box and 450 ohm ladder line to the top of my inverted V. Works great on all bands. Thanks for your comment.
@arthurgumbus3969
@arthurgumbus3969 10 месяцев назад
I wonder WHY you are limiting your view to "under $1000" tuners.... if you are in High Power, then suitable high power trans match are needed to provide headroom. The components for high power are costly. So you should add in the Palstar HF-Auto with remote head accessory, and the Flex Tuner Genius. Art W1SWL
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