Seems to be a dead carrier on 145.800 in Northern CA. Pointing about240 degrees from my QTH in Placerville.
Greg Stahlman KJ6KO
kj6ko.com
Trustee Northern California 900 Repeater System
NC9RS
nc9rs.com
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Hi!
My AOS on that pass was around 2211 UTC. I barely heard the end of one picture before a break. I copied one picture perfectly, starting at 2215 UTC. It was a 21-degree pass, and the picture I copied was around the middle of the pass. I tweeted the picture already, and will upload it to the ARISS SSTV picture archive shortly. I just got home a little bit ago, my first chance to take my recording from that pass and feed it into RX-SSTV on my tablet.
I have been working an earlier shift at my office this week, which worked out perfectly for the afternoon ISS passes. I might try to catch one evening pass before going to bed tonight, but the 1100 UTC alarm is still hard to accept. Only two more days of that... :-)
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Wed, Apr 13, 2016 at 10:11 PM, Greg Stahlman [email protected] wrote:
Seems to be a dead carrier on 145.800 in Northern CA. Pointing about240 degrees from my QTH in Placerville.
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
On Wednesday, April 13, 2016, Greg Stahlman [email protected] wrote:
Seems to be a dead carrier on 145.800 in Northern CA. Pointing about240 degrees from my QTH in Placerville.
Greg Stahlman KJ6KO
kj6ko.com
Trustee Northern California 900 Repeater System
NC9RS
nc9rs.com
__________ Information from ESET NOD32 Antivirus, version of virus signature database 13330 (20160413) __________
The message was checked by ESET NOD32 Antivirus.
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Paul,
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. :-)
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Thu, Apr 14, 2016 at 1:39 AM, Paul Stoetzer [email protected] 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
This thread prompted me to take a look at some interference I had on 145.800. It turned out to be 145 810 or so, after I tracked it down. And it was coming from an IP camera I have in the attic that I used to watch my satellite antennas. The wireless was off, it was on a cable, but it still put out all sorts of garbage on 2 meters. Just a thought, maybe the problem is closer to home than you think!
Jerry Buxton, NØJY
On 4/13/2016 20:59, Patrick STODDARD (WD9EWK/VA7EWK) wrote:
Paul,
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. :-)
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK
On Thu, Apr 14, 2016 at 1:39 AM, Paul Stoetzer [email protected] 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
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
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Greg Stahlman -
Jerry Buxton -
Patrick STODDARD (WD9EWK/VA7EWK) -
Paul Stoetzer