[50mhz] [NEWSVHF] TVI Notch Filters

[Lance Collister, W7GJ]

Hello Magic Banders!

I am passing along this information because these filters are very effective, as shown by the plots Ron provided below. I use them here at my house and am ordering some more to help protect my neighbors.  It seems now that some are using the "converter boxes" so they can receive digital TV, I have some TVI again here for the first time in many years.   If you are looking for a good way to keep 6m from overloading TV converter boxes, preamplifiers or FM receivers in your home or nearby houses, these are a great solution!  Many thanks to Ron for taking the initiative to have a batch manufactured again for us to help keep us on good terms in the neighborhood!  If you are interested in getting in on this run, please contact Ron directly at:

Ron Klimas WZ1V<wz1v at sbcglobal.net>

MNI TNX and GL!  VY 73, Lance





> On 2/7/2012 12:39 PM, Ron Klimas WZ1V wrote:
>>> Hi: I received my first TVI complaints a few weeks ago after nearly a
>>> year operating from the new QTH. (at least my January contest effort
>>> was noticed by someone, HI). Some of you may recall those great
>>> "bullet" type notch filters K1UHF was selling ten years ago. These
>>> solved ALL my TVI issues at the last QTH. I can make these available
>>> once again IF there's enough interest in a group buy. These are
>>> shaped like a shotgun shell / house fuse but smaller with a male F on
>>> one end and female F connector on the other, completely shielded
>>> metal tube enclosure. The 50.1 MHz filter has over a -65 db notch,
>>> the 144.2 model has over -75 db rejection. Both have ample bandwidth
>>> to notch out the entire low end of the band. Insertion loss is less
>>> than 1 dB through 860 MHz, and very reasonable through 1 GHz. Sweeps
>>> of each are here:
>>> http://www.wz1v.com/6mnotch.pdf
>>>
>>> http://www.wz1v.com/2mnotch.pdf
>>>
>>> IF there's enough interest, I can make these available for the low
>>> price of $15 each. That's less than you'd pay for the cheapest high
>>> pass filter, and these are FAR more effective. WHO'S INTERESTED? -
>>> reply privately - I need enough pre-order commitments to justify a
>>> group purchase, so reply only if you're seriously interested, and
>>> indicate how many of each frequency you'd want.
>>> If you'd also be interested in a similar 432.1 filter let me know.
>>> -73, Ron WZ1V
>>>


-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
TEL: (406) 626-5728
QTH: DN27ub
URL: http://www.bigskyspaces.com/w7gj
Windows Messenger: W7GJ at hotmail.com
Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

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