Auto tuner for 6300

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  • Question
  • Updated 3 years ago
  • (Edited)
Hi all. I was wondering if anyone knows of an ATU that integrates with the 6300 and will not need messing about with all time? Thanks
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Steve MI6SKG

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Posted 4 years ago

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Reggie-k6xr

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I use a LDG Z-11 ProII  or LDZ AT-100ProII with my 6500. Both work seamlessly.
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Bob Hawkins

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Reginald. does the 6300 power the tuner?


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Steve MI6SKG

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Thanks for your help I can't see me getting the flex tuner as it doesn't seem to be as effective as most aftermarket ones at least that us what I have read
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Bill -VA3WTB

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were did you read the Flex tuner is not effective?
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Steve MI6SKG

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Lots of places on the net. Also currently it does not have memories and no word otherwise for 1.4? Also it costs £300 which is more than a good aftermarket one
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William Hemmingsen

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The 6300 built in tuner will tune just about anything.  As a matter of fact I have not found anything it won't tune yet.  But yes, lack of memories is a pain, but I'm sure its coming.

W4WHL
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Burt Fisher

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I disagree. I think 6:1 is the limit. My Kx3 does in excess of 10:1. and it is faster and remembers
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Bill W2PKY

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ATU Memories might be in 1.5; No date for that. The other issue with the built in ATUs at present is that it drops out with changes to the slice configuration. I know that's a broad statement. Finally, if you run into tuning failures just add coax to the feed line until success is achieved.
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k3Tim

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I recall the h/w manual for the 6K series saying the tuner will tune 10:1. 

ATU + Memories are an added part of 1.4

I find not having the mems mildly annoying but not painful.

Best,
Tim
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Tim - W4TME, Customer Experience Manager

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Here are the FLEX-6300 ATU specifications.  

    Matching Range 80m – 10m:  Optional, 8.3 Ohms – 300 Ohms
    Matching Range 160 and 6m:  Optional, 16.7 Ohms – 150 Ohms
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Bill -VA3WTB

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Tim, what is the tune? is it 10.1 I'm not following.
Oh and in my post I was kidding about selling my radio, I was having fun with some reasons I hear about why some may consider doing so.
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Reggie-k6xr

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I also disagree. I have 3  auto-tuners that tune my multi-band antenna 1.1,  3.5 through 30 mhz. my 6500 tuner fails on all but one band. Even my little elecraft qrp tuner tunes it 3.5-30. I have tried adding coax and all to no avail i wish it had a larger range.
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Reggie-k6xr

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I now see the reason for tuning difficulties,  Reading the specifications. 8.3 - 300 ohms. My auto tuners tune 6 to 1000 ohms or more. 
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Steve MI6SKG

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Thanks all. I will likely order an LDG or MFJ tuner. Is there any way to tune from smartsdr? Or do I have to keep hitting the button?
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Richard McClelland, AA5S

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I'm running an Elecraft KAT500 tuner with my Flex 1500.  A secondary amplifier is essential for tuning the KAT500 as five watts isn't enough.  Band switching is automatic and the memories work well.  My only other tuner before this was a Dentron Jr. Monitor tuner, I'd recommend both of these. (for what it's worth.)
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Reggie-k6xr

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ldg: once tuned will auto tune when you key up
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Steve MI6SKG

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Thanks!
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John n0snx

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I have both LDG and MFJ.... LDG is much faster and less retuning in automode
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Steve MI6SKG

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Hi John can you tell me which model of LDG tuner you are using please? Thank you.
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Jim - N7CXI

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I'm not sure I understand all this. If there's a 10:1 VSWR present at the shack end of an unbalanced feedline, the losses will be astronomical. I'm probably asking for it, but why would anyone do that, assuming they had any other choice at all?

Thanks,
Jim N7CXI
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Reggie-k6xr

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When not using an unbalanced feedline but ladder line. A multi-band (80-30 MHZ) using ladder line to a balun and then coax to the tuner. this requires a manual tuner or a Auto tuner with a wide range. With this arrangement you can have an all band antenna-one dipole- for all bands. The Flex tuner will not tune (usually) this type of antenna. the LDG tuners will and allows you to have only one antenna that is very efficient for all bands. Losses are very small. 
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Jim - N7CXI

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That makes sense, (of course) but I'm hearing of all kinds of cases where people are using long lengths of unbalanced line and unbalanced tuners in the shack to "match" impossible loads. Even manufacturers are recommending it - for example using some defined length of coax to "match" a 43-foot vertical on 160m. The impedance at the shack end may indeed by "matchable" with an unbalanced tuner at that point, but operationally it resembles a really complex dummy load more than something that radiates with usable efficiency. 
Color me narrow-minded, I suppose... 
73,
Jim N7CXI
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Norm - W7CK

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I have the Elecraft KAT500 and it will tune in excess of 10:1.  It never fails to tune to any band I ask it to.  The internal tuner on my 6700 often has problems trying to tune < 10:1 and it doesn't have memories yet.  I'd put my $300 into an external tuner that you could use with any rig you choose and one that has lots of memories.