[Fwd: Telco Products XL-1000 low pass filter]

Peter A Markavage pmarkavage at JUNO.COM
Thu Dec 28 23:06:41 EST 2006

You might check Ham Radio Mag., June 1976, page 80, New Product Review,
for some insight into this filter. I believe those adjusting screws were
for tailoring interference reduction on specific TV channels. The product
was also known as the Channel Guard XL-1000. Seems to me I remember them
back in the 70's being located on Long Island in New York. I don't think
they exist anymore. Unless you know specifically that your RF signal is
causing TVI on say the VHF channels, 2-13, I wouldn't use it. Of course,
if you are causing TVI, I would first check the rig to see why it's
generating spurious emissions in the TV band and if there's anything you
can do to the rig to eliminate it.
Pete, wa2cwa
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On Thu, 28 Dec 2006 21:08:43 -0500 Richard  VanTrease <kc8keg at MEI.NET>
> ---------------------------- Original Message 
> ----------------------------
> Subject: Telco Products XL-1000 low pass filter]
> From:    kc8keg at mei.net
> Date:    Thu, December 28, 2006 9:00 pm
>    Hello Everyone, Is there someone out there that can help me with 
> this
>  filter or direct me to the correct website or folks to call? This 
> thing
>  has 5 adjustment screws and I have no ideas how to use it properly. 
> The
>  actual manual would be great. Thanks in advance, Rich kc8keg
> ---------------------------- Original Message 
> ----------------------------
> Subject: Telco Products XL-1000 low pass filter
> From:    "Richard  VanTrease" <kc8keg at MEI.NET>
> Date:    Fri, November 17, 2006 9:01 pm
>    Hello All, I have a Channel Guard XL-1000 from Telco Products 
> Corp. in
>  Glen Cove, NY. It's an adjustabe xmtr low pass filter from 40 mhz 
> and up.
>  Would anyone have the instructions around that they could scan and 
> e-mail
>  to me and/or how to reach the company? I really do need to know how 
> to
>  properly set-up this attenuator. I tried to Google and got no 
> specific
>  info on the company after going thru several pages of web info.
>  Thanks to all in advance, Rich kc8keg

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