[NLRS] Ch 2 interference to 6m

Mon, 15 Apr 2002 08:20:52 -0500

A cut & paste from the "Amps" reflector, this may be of interest to you
Shoreview folks.  It appears that all you need to do is wait until 2006
...... hmmmm.

Harris Broadcast Communications has printed a technical support
paper, "Low Band VHF Television Transmission and Amateur Radio
Operation" in January, which comprehensively analyzes the condition
in which a channel 2 NTSC TV transmitter (one of their models) can
introduce interference in the weak signal portion of 6 meters. The
transmitter is not neccessarily at fault, since it meets the FCC
specifications. However, the Rules and Regs are not sufficient to
ensure that hams don't get clobbered. This is mainly a concern for
folks living within line of sight of the TX tower, where the
sidebands can still present noise above the floor of most ham RX
setups. Some tricks are mentioned, such as adding high power filters
at the TX, or at each receiver, and it presents the optomistic
conclusion that in 2006, NTSC transmitters will cease operation in
North America, while the DTV emission mask is more stringent.

To read a copy:
http://www.broadcast.harris.com/support/white_papers.asp
Then go to Television, and download the big file. It is a well done report.
73
John
K5PRO

                    Mike King -                                                                                    
                    KM0T                 To:     [email protected]                                              
                    <scsueepe@mtcne      cc:     (bcc: Jon C. Platt/US-Corporate/3M/US)                            
                    t.net>               Subject:     [NLRS] Question                                              

                    04/14/02 07:35                                                                                 
                    PM                                                                                             

Hi all, has anyone else been having trouble with the qsl.net email
forwarding service?

I have been using [email protected] for quite some time, now I seem to not be
getting any messages coming thru.

Can a few of you send me some email there so I can see if its from me.

Also, those of you using the arrl.net forwarding service, how well has that
worked for you?  I seem to be getting messages from there ok, and may
switch
to that.

I sent an email to qsl.net asking if there were problems, never got a
responce back from Al, so I am not sure where it all stands.

Thanks for your help.

73 and CU at AU 2002

Mike  - KM0T

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