[RFI] Is a low pass filter necessary?

Roger (K8RI) k8ri at rogerhalstead.com
Fri May 11 00:24:07 PDT 2012

On 5/10/2012 3:28 PM, qrv at kd4e.com wrote:
> Just to close the loop here are the files and documentation for
> the Linux DSSTV app.
> It *is* compatible with EasyPal based on the DRM protocols.

Ah, standardization! DRM to most of the world = Digital Rights Management.


Roger (K8RI)

> <http://www.pa0mbo.nl/ties/public_html/hamradio/txamadrm/index.html>
> <http://www.pa0mbo.nl/ties/public_html/hamradio/txamadrm/txamadrm.pdf>
> <http://www.pa0mbo.nl/ties/public_html/hamradio/rxamadrm/index.html>
> <http://www.pa0mbo.nl/ties/public_html/hamradio/rxamadrm/rxamadrm.pdf>
>> I know I saw a Linux-friendly DSSTV app, will have to look to see if
>> it handles EasyPal.
>> I E-mailed the DroidSSTV developer to ask about that as well.
>> >   bill ny9h wrote:
>>> pictures ,,,
>>> 14.230 is the cctv freq....  and on 14.233 they are talking about
>>> sending pictures....

On 5/10/2012 11:41 PM, John wrote:
> I was on an antennas reflector recently asking about the proper placement
> of a low pass filter and several members asked why am I using one at all.
> They said with the modern radios (I have an Icom 706 original) a low pass
> filter really isn't necessary, that most modern rigs already contain one
> and the spurrious emissions are already greatly reduced. So, what is the
> opinion of list members-with a modern rig, does having a low pass filter in
> line really help to solve any additional problems?
> John AF5CC
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