[amsat-bb] Carrier on 145.8 NORCAL

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Thu Apr 14 01:59:40 UTC 2016


If the cable TV system in your area still uses analog channels, the
2m band falls around cable channel 18 (144-150 MHz). That used to
be a problem for me in the past, if there was degraded coax cable
connecting houses to the cable TV system in the neighborhood. If
I transmitted on much of 2m, I would interfere with that cable channel.
And I could hear the audio carrier from that channel on my 2m radios.
If this is the case, you might hear the audio from that analog cable
channel on 149.750 MHz.

Thankfully, my current neighborhood doesn't suffer from having some
old or compromised cable in the ground between the houses and street
(all cable TV and telephone infrastructure is underground around here).
And no TVI complaints from the neighbors, when on HF or VHF/UHF. :-)


Twitter: @WD9EWK

On Thu, Apr 14, 2016 at 1:39 AM, Paul Stoetzer <n8hm at arrl.net> wrote:

> There's a lot of junk on 145.800 MHz here in DC. My router or cable modem
> seems to put out a strong carrier there. Other signals appear there around
> my apartment building too (there are certain interference free areas I can
> go). The church across the street also appears to have some wireless mic
> system there.
> Trying to listen to the ISS or work XW-2C is always interesting with all
> these signals near that frequency.
> 73,
> Paul, N8HM

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