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You can
write your own review of the K-Y Filters.
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KT9O
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Rating: 5/5
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Dec 31, 2008 19:09
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Amazing !!
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Time owned: more than 12 months
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I use the K-Y filters on my computers AND my LaCrosse weather station. Even with the wind speed and direction indicator mounted near the apex of my dipoles, there is not so much as a flinch in the display. Before the filters, the rf would wipe out the displayed readings until the next time sensor data was sent down the line. These filters really work.
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WA6RZR
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Rating: 5/5
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Nov 18, 2007 15:13
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Solved the problem.
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Time owned: 0 to 3 months
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I could not transmit without my dialup pc's
getting knocked offline. Plugged in one RF-1
filter on each computer & problem solved. I'll
order a few more for any future problems.
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G0HIX
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Rating: 5/5
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Dec 19, 2006 17:07
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RF-1 Works for me
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Time owned: 0 to 3 months
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Had a problem with a new ADSL router which was prone to re-setting when using HF even at low power.
Saw the ad for Johns filter and emailed him with questions which were answered very promptly and I decided to purchase one (Money back guarantee).
Filter received (UK) within 6 days from placing order and very pleased with results. I can now work 40m upwards with no limitation on power and still get a steady adsl signal - 80m still causes some problems when I put a lot of power on, but 100 watts ok, and this may be 'more' due to the closeness of my 80m antenna and not the filter - still have a few things to try.
I would highly recommend this filter - has allowed me to once again work the bands and my PW1 is no longer redundant :)
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WD40
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Rating: 2/5
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Jan 21, 2005 06:40
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Does not work for DSL
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Time owned: 6 to 12 months
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Bad news! After getting DSL fromm my local phone company, I found the KY filters to be next to worthless in keeping RF from knocking me offline. Although they work for dialup, they are not effective at reducing RF into DSL equipment. I wrote to the maker of KY filters who told me he does not currently have any filters for DSL only and does not have DSL himself.
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WD40
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Rating: 5/5
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Nov 7, 2004 16:57
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They work great!
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Time owned: 6 to 12 months
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John Browne builds and sells the best darn RF filter you can buy. His small factory in Davis,California produces an excellent product that really helps to reduce RFI. You won't go wrong with a KY filter plus he pays for shipping! -Walter Trout
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KG6UNW
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Rating: 5/5
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Jul 23, 2004 03:35
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Removed EMI on Phone
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Time owned: 0 to 3 months
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My neighbor complained about hearing garbled sounds over her phone when I was transmitting 100 watts SSB on 20 & 40 Meters. I verified the problem and tried ferrite chokes & a Radio Shack phone filter, which helped slightly, but not enough. I bought a K-Y 2 line filter from HRO, installed it at the phone and; no noise!
It is speced at ~40 dB rejection and I believe that is conservative. Will get several more to solve any future similar problems, which seem to come from too much R.F. too close.
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K5NT
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Rating: 5/5
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Mar 4, 2004 23:47
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Easy solution to big problem.
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Time owned: 6 to 12 months
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My cheapo wall phone always seemed to turn into a great receiver every time I hit the transmit switch. Adding the KY RF-1 eliminated the problem. Enough said!
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