Icom AH 705 Auto ATU for IC-705 - Review, and Mystery Solved?

[@davem7847]

Peter, always enjoy your videos, quite informative. Thanks for the reviews. Keep up the good work.

[@watersstanton]

Thanks, will do! 73 Peter

[@hoggif]

That seems like an interesting concept: I could see a use for a dipole like that, assuming the weight is not too heavy for collapsible temporary masts.

[@watersstanton]

Thanks for sharing. 73 Peter

[@davidportch8837]

Thanks for all the interesting videos this year Peter... here's wishing you a safe and enjoyable new year...

[@watersstanton]

Happy new year! Thanks, Pe ter

[@Tommyr]

Have a happy new year Peter!

[@watersstanton]

And you. 73 Peter

[@9bar7and9bar8]

Hi Peter, i had the exact same set up many years ago using the Icom AH-4 up on a pole on the chimney with even legs of wire each side feeding an IC756 and it worked well. I did have to extend the control cable myself as there was no extension kit for the AH-4. 73 and HNY. Syd

[@watersstanton]

Many thanks. Glad to know it works! Happy New Year. 73 Peter

[@qrptedmac]

Thx for the info. I was waiting to get the 705 until the tuner came out.

[@watersstanton]

Glad I could help. 73 Peter

[@DindoNuffin-e2x]

We appreciate you evaluating the equipment!

[@watersstanton]

Many thanks. Peter

[@RobB_VK6ES]

I think Icom missed a vertical marketing feature. How convenient it would be if the ATU clipped into the battery recess without the need of external control cable and coax patch. Then piggyback the battery onto the ATU for a unitised approach. As for the two cell vs 13.8V I would not be surprised if it contains a switching voltage booster.

[@watersstanton]

Hi there. There does seem to be some form of bracket included in the kit but it is not clear how it works. 73 Peter

[@alexdokic5567]

Hi Peter, I enjoy watching your KZbin videos and this one was no exception!! I have the IC705 and this afternoon worked VE9XX with 10w and my endfed half wave for 40 mtrs on the 14 m band which was wide open. I think the 705 is much better than the KX3 for many reasons, the main ones being the great audio from the internal speaker, the built-in spectrum scope and the more robust build quality! Anyway keep the good work up 73 Alex M0KVA.

[@watersstanton]

Great to hear! Well done. Happy Bew Year. 73 Peter

[@mw0lge]

always good to ponder Peter. Best wishes for 2021 ! atb Richie.

[@watersstanton]

Many thanks. 73 Peter

[@jimbos1567]

Well Peter I not only enjoy your videos, but I suspect you would be a delightful next door neighbor as well. Please keep them coming. You are one of the people I try never to miss. Thanks again for your efforts. I am being educated slowly and surely.

[@watersstanton]

Many thanks Jim. You have a great New Year - BUT keep safe! 73 Peter

[@fernandoscrenci9555]

Nice Work on the investigation on the "Mystery" !! 🔎

[@watersstanton]

Many thanks. 73 Peter.

[@carl-gunnarhillefors7612]

Cheers! There are LDG TUNERS LDG-200Pro Il 250Watt and LDG Z100 which manages 125Watt - quite sufficient for both these to use with both IC705(10W) & IC7100(100W).

[@watersstanton]

Thanks for viewing. 73 Peter

[@pauls9440]

And the LDG 817 tuner which will work well with an IC705.

[@DucatiMTS1200]

Peter! in the background there are 3 luminous ufo's hovering above the Spitfire!!!!!! Oh that's your room lights .... lol hi hi ... have a safe and happy new year and just to say I very much enjoyed your videos and useful comments in 2020.

[@watersstanton]

Many thanks William. Sorry about the lighting! All the Best. Peter.

[@jasonhowell5362]

looking forward to the tests 73s

[@watersstanton]

So am I. 73 Peter

[@sailaway2205]

I have a Super Antenna MP1, would the tuner work with it?

[@watersstanton]

Yes it should do. 73 Peter.

[@G7VFY]

Could the Elecraft tuner be used as a dipole centre in the same way you are suggesting with the Icom ah705? The Elecraft tuner has the benefit of handling twice the power, too.

[@watersstanton]

Hi there. yes it can be but do remember it is not weatherproof. So strictly for portable work. 73 Peter

[@alvinnorris6523]

Thanks Always enjoy your videos.

[@watersstanton]

Glad you like them!

[@markg6jvy135]

Thanks for the videos this year Peter - Happy New Year to you and your family 👍👏👏

[@watersstanton]

Mark, many thanks and Happy new year! Peter

[@felixfarquharson]

would well love a live stream at the shop, meet the staff live q&a on favourite band antenna rig etc.

[@watersstanton]

Nice to hear from you. 73 Peter.

[@willieb6529]

the 20 yr old ldg z11 is an auto tuner and requires no control cable and runs off two 9v batteries... my choice is a small matchbox with a tayloe led swr indicator, such as the qrpkits sota tuner, which is about the size of a matchbox and requires no batteries

[@martinvanek5951]

I'm not sure why the tuner would not work with a 1/2 wave end-fed antenna. The associated transformer with the end-fed should bring the impedance close to 50 ohms. Likely I'm missing something. Thanks for the video. Always enjoy them.

[@watersstanton]

The reference to an end fed half wave is without a transformer. With a transformer there would be no problem.73 Peter

[@BoB4jjjjs]

Good theory about the ATU, but I would rather tune the aerial. Though when you get to very long wires it can be a bit difficult. All the best for 2021 Peter and may 2021 be a good and prosperous New Year for you.

[@watersstanton]

Many thanks for sharing. 73 Peter

[@TridentMissileTech]

What is difference between the mat 705 and ah705. Other than that ah is water proof

[@watersstanton]

The AH-705 has much wider matching capability.

[@C4H6As]

Wouldn´t it be great, if the tuner had an bluetooth interface and the control cable was not needed?

[@watersstanton]

Yes, but would add cost and bluetooth range is limited. 73 Peter.

[@bruhzooka]

Why they make it sooo big?

[@pauldarby1739]

Merry Christmas. 73’s 😊

[@watersstanton]

And to you. 73 Peter Happy holidays!

[@bubbly754]

The reason; the cost of Icom accessories...! 73s and Happy New Year.

[@watersstanton]

Thanks

[@alvinnorris6523]

I’m at point where flying isn’t happening as often . Still have plane and license but not flying much.

[@forgetyourlife]

450g is not light for a portable radio that's already heavy for hiking. They didn't put an ATU in so they can sell you the next version (IC-705MII). This ATU is an after thought. Price will be 300US...Mystery solved.

[@watersstanton]

Hi there. The pre-production specification did not include an internal internal tuna but did include the accessory socket for an external tuner. 73 Peter

[@forgetyourlife]

@@watersstantonYes, an afterthought. Your quite the icom apologist. I suppose that goes with being in retail.

[@C4H6As]

Was my first though: IC-705MKII in 2022/23, with Tuner, 2 antenna connectors for HF and VHF/UHF, USB-C, Full USB-Functionality via Bluetooth, GPS disciplined oscillator, APRS, 12V battery and a variety of decoding capabilities like PSK31 and maybe even FT8 etc.. What about a WSPR beacon mode? And, yes, I would buy that!

[@AliReza-zx8km]

Nice...........

[@watersstanton]

Thanks. 73 Peter.

[@nine7295]

Amazing you can do a review without the actual product.

[@watersstanton]

I previewed the possible applications - the review is yet to come.

[@TheC15jon]

All antennas are dipoles.