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write your own review of the Autek Research QF-1.
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KM5Q
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Rating: 5/5
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Jan 12, 2008 20:47
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30 years, still works great!
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Time owned: more than 12 months
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I got one in 1977 and built it into a speaker enclosure for my Ten Tec Triton IV. I've been ham-active only about 5% of the time since then, but it still works perfectly. I leave it on almost all the time, CW and SSB. Wouldn't be without it for a vintage rig. I added a on/off-bypass switch so it's in/out smoothly.
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W3NRL
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Rating: 5/5
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Aug 2, 2007 10:43
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Neat Little Gizmo
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Time owned: 0 to 3 months
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I found this little gizmo on ebay ( cheap ) and i was taken back by the station that i could not normally make contact with that this QF-1A just bring them to the surface.
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W2RDD
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Rating: 4/5
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Aug 2, 2007 06:42
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Nice outboard filter
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Time owned: more than 12 months
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I bought mine used, god knows where or when, but it was years ago. I continue to use it with nice results. Right now with my FT-817ND. I have a cw filter in the little Yaesu but find the QF-1 peak and notch controls very handy in my all-QRP CW operating. So far the components haven't broken down and I, too, gave it a good contact spraying. I give it a 4 rating only because the filter cannot be bypassed. You turn it off, dead air. It must be disconnected from the rig in order to bypass. Not a problem for me as my phones are always plugged in with the filter controls in a sort of neutral position.
If you find one at a reasonable price, take a chance.
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K4SAR
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Rating: 5/5
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Jul 29, 2007 06:56
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Nice filter
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Time owned: 0 to 3 months
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I recently picked up a QF1 from an estate sale, and after applying a touch of contact cleaner to the controls was amazed at how well it works. Very weak signals in crowded band conditions are much, much more readable. Notch and low pass work very well.
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AB7JK
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Rating: 1/5
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Jan 22, 2007 16:08
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Too old - bad xformers
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Time owned: 0 to 3 months
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These filters can be found cheap on Ebay. Trouble is they are so old they break down quickly and the transformer is usually the first thing to go. Otherwise the transistors break into to self oscillation. Both result in a loud buzz. Save your hard earned money.
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W0NBP
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Rating: 5/5
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May 5, 2006 18:21
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Excellent CW Tool
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Time owned: 6 to 12 months
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This is one of the best audio filters for pulling CW out of the mud I have ever seen. It also cleans up SSB very well too. I have used the DSP by r/shak and this Autek filter is twice the device the DSP is. When QSB is really bad you can notch this down so narrow you don't hear nothing but the beat.
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K7JBQ
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Rating: 5/5
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Feb 14, 2006 16:16
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$15 at a swapmeet
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Time owned: 6 to 12 months
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Dirty, and the noise when I powered it up almost blew the cans out. A little spray and cleanup later, and copying the weak ones on CW became much easier.
I have the narrow CW filter in the Yaesu FT-890; this little unit adds another dimension, particularly for peaking weak signals. Find one, do a little cleanup work (after all, these things are 30+ years old), and enjoy!
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W6TNI
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Rating: 5/5
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Jan 15, 2006 20:25
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best buy
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Time owned: 0 to 3 months
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70S TECH DOES ITS JOB. I HAVE USED SEVERAL DSP UNITS IN THE PAST, AND NOT ONE WORKS AS WELL ON SSB AS THIS FINE PRODUCT. USING WITH A KENWOOD TS 520. WANT TO HEAR A SIGNAL POOP OUT? GET A AUTEC QF-1. YOU WILL NOT BE DISSAPOINTED. BOB W6TNI
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WB2JNA
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Rating: 5/5
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Jul 19, 2005 10:08
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Surprizingly useful
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Time owned: 6 to 12 months
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I'm always amazed at what this simple little filter can do. I put it between a rig with no extra filters and my headphones, and signals in the mud are clearly readable on CW. I haven't used it much on SSB, but it seems good there too. A used one, for about $20, is much cheaper than buying a filter that is mounted inside the rig, and you can easily use the QF-1 with different radios.
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NOTAHAMBUTWANNABE
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Rating: 0/5
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Jul 13, 2002 19:38
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Autek is Autistic
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Time owned: 0 to 3 months
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Had a real bad experience with Autek. Never buy these filters again. Company is rude, stuff is overpriced, etc.
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