PowerGenius Tuner

Richard McClelland, AA5S

Point taken.  Would you include a delta loop in the list of undesirable antennas?  I have one that has good SWR on some bands and pretty atrocious SWR on others.  This seems like a reasonable use case for a tuner with an amp, presuming that I were to use an amp, which I don't.

Varistor

Is this a horizontal delta fed in one of the corners? If so, why not build several deltas that share the same feed point? If this is a classic delta, vertically oriented with a feed point 1/3 along one of the sides, I'd argue you have the space for other resonant antennas. These days we are very blessed with zillions of books on antenna design. There is always a way.

Richard McClelland, AA5S

I'd like to solve my antenna problem by buying 5 acres and putting up an Optibeam log periodic for 14 to 28 mhz, a full sized horizontal delta loop for 1.8 to 10 mhz and remoting a v2.0 Flex at the base.  I just spent what seems like enough to do that on three weeks in Tahiti with my family, so maybe this will need to wait for another time :-)

HCampbell WB4IVF

We’ve got acreage but it’s taken up by my beverages, much to my wife’s chagrin.  I can just see her face when I tell her I just found out I need to cram in yet more antennas to achieve ”complete resonance”!    (-:

Howard

Varistor

It all boils down to making tradeoffs. The horizontal full size loop is a great cloud burner. That is, unless very high above the ground, it shoots straight up. Its purpose has always been to cover well the skip zone. Further, the horizonantal loop is best fed with either open line followed by a balun and a tuner or with a remote tuner at the feed point. So the tradeoff that I am referring to is whether or not one would spend all that money on essentially local ragchewing. As different people get different enjoyment out of ham radio the answer will depend on your own goals.

Ria

If you have a beam on 40 meters (except a SteppIR, which I have) then it will likely be tuned to the CW or phone portion but not both. The tuner makes up for that. I also have a vertical on 80m which is resonant on the CW portion but I have to use the tuner on SSB.

Also during a contest anything can happen...

Varistor

The laws of physics apply equally to all of us. The coax acts as a transformer so a 1:1 match at the tuner does not equal 1:1 match at the antenna feed line...unless of course you cut it to the specific electric length. That is, your tuner in the shack does nothing to improve the match at the antenna which is the one match that really matters. There is a good reason why antenna analyzers should be calibrated for the length and type of your coax before you do any measurements.

Ria

This is exactly why the tuner genius is engineered so it can be at the antenna end, base of the tower etc. 

But what a tuner does is allow my transceiver and amplifier to output full power and not shut down due to protection. Otherwise I have no need for it. 

Put another way - an antenna that has a slight mismatch is still almost as good as a perfectly matched antenna. Except that my transceiver and amplifier refuses to transmit into it for fear of damage. Tuner solves that. 

Larry - WA7LZO

Hi Ria,

Does your SteppIR give you a near perfect 1:1 match if you take the time to tune it for any given operating freq, even when making fairly small movements in freq, such as when moving from the CW portion to the phone portion of any particular band?

Just curious, as I am considering buying the SteppIR DB-42, and figure if I take the time to tune for each freq, I may not need a tuner. I don't do contests, and the like, so I have no need to move fast when changing freqs.

Thanks!

Br,
Larry
WA7LZO

Ria

Hi Larry,

The antenna will be matched and it won't matter if you move a little. If you move from CW to phone, however, it will be mismatched a bit, I would say 2:1 on 40 phone when it's tuned to the CW portion. However, why not just put a CAT cable and use the tuning relay to unkey your amp when QSYing? Auto switching frequency is a dream. No fiddling with the controller, no mistakes either! Just QSY and wait for it to finish.

Ria

Larry - WA7LZO

Nice! Sounds like a fully automatic solution!

Larry

Ria

The best way to control it at current is DDUtil. You can set it to follow the transmit slice and you can do 180, bi-dir and fwd, retract and calibrate. REally good stuff.

Larry - WA7LZO

Ria, do you know if Flex has said if this particular SteppIR control logic might be incorporated and integrated into a future sw release? 

Ria

I don't know. It would probably good for them to do it though. 

Publicly they haven't said anything of the sort. 

KY6LA_Howard

@Larry.

I have had a SteeppIR MonstIR (seriial #1) since 2005. It covers 80M to 6M and EVERY band in between including 60M

With a bit of work setting it up by band and tower height (Height does affect patterns/SWR due to interaction with nearby objects) I can get very close to 1:1

I Have NEVER used a tuner or ATU with it even in Contests Run full power on an SPE 2K-FA and it barely gets hot.

I use DDUTIL Because the Flex USB control only gives Band data which is not sufficient for my purposes to control the antenna. DDUTIL always forward and reverse,direction, calibration and retraction of elements.

In contests Reversing the antenna almost instantly by pushing a button and not having to wait for rotation is worth a lot of extra Q's.

I also assembled and installed the DB-42 Serial #1 for WA3IHV. Great antenna as well.

mikeatthebeach .

Note to the SWR limits

Lesson's learned by SPE the Hard Way !

SPE 2K-FA SWR Tuner is about 3:1 ( say about 2.7:1 now), You must
watch out, SPE started with the 1K-FA years ago with ( 3:1 ) & lost many amps
due to High Voltage breaking down the Internal Antenna Tuner 
Caps and Filters at High SWR's until they up the Voltage Ratings 
on the capacitors

Many PA deck's blew up !!!

Almost sunk SPE Amps back then until they fixed the problem with the 1K-FA 
and implemented new designs in their new 2K-FA and 1.3KFA

At extreme phase's and SWR's Part's get hot, like the Toroid's, start to
**** to high currents and the Cap's breakdown

So, I hope they bullet proof the Tuner Genius otherwise it could be damaging 
to itself and the Power Genius XL Amp.

mikeatthebeach .

The Palstar HF Auto with it's Auto Air-Inductor and Air Cap
really handle 1.5Kw out where the other tuners are tuned only at driver levels
< 100 watts ( Like SPE ), then preset at fixed positions before 1.5Kw is applied.

SPE nevers tunes at 1.5Kw out, that will destroy their Tuner !!

Ria

Tuner is separate and not part of the amp.

Lucas - W6AER

Looks like it has been a year since the last post, any news on the Tuner? Possible Availability?

HCampbell WB4IVF

From the 11/2/2018 PG XL Insider:

“Since we have been primarily focused on delivering the amplifier, work on Tuner Genius has been temporarily delayed. Once we resume production shipment flow, we will return to completion of testing and production roll out of the tuner.”

Howard

Lucas - W6AER

Thanks, I think there is a lot of interest in this product so hopefully they will resume soon on it now that it appears the amp is ready again to roll out. I would love to see perhaps ethernet on it much like the Antenna Genius to allow for remote or out of the way installation perhaps, not sure what the plans are but can't wait.

HCampbell WB4IVF

philip.theis

Love the use of N connectors.

K1UO Larry

I would expect to see a more refined "pre-release" unit displayed at Dayton next Spring.

Chuck Smith

No ones put on order ($1K down) in 2017 will get the Tuner, not delivered in2017

Larry - WA7LZO

HCampbell WB4IVF