Newbie question about 156.000

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Newbie question about 156.000

Postby airband1 » Sun Aug 06, 2017 4:51 pm

hey guy's

i'm getting a silent carrier on 156.000mhz and wonder if this is normal for this frequency?
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Re: Newbie question about 156.000

Postby deadite66 » Sun Aug 06, 2017 5:31 pm

i've noticed a few silent ones today too.
Airspy R2 on a Discone
rtlsdr v3 on a choc bloc copper dipole.
Windows 10 and Antergos Linux.
Yupiteru MVT-9000 MKII telescopic ant.
RSP2 Pro currently unused.
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Re: Newbie question about 156.000

Postby Johan Beck » Sun Aug 06, 2017 6:55 pm

airband1 wrote:hey guy's

i'm getting a silent carrier on 156.000mhz and wonder if this is normal for this frequency?

Do you have this sometimes or all day long?
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Re: Newbie question about 156.000

Postby m0lsx » Sun Aug 06, 2017 7:25 pm

It happens here too.

https://ukradioscanning.com/viewtopic.php?f=4&t=2785

It seems it's a possibly a router..BT or Sky, I believe, but I am not 100% sure of that.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
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Re: Newbie question about 156.000

Postby deadite66 » Sun Aug 06, 2017 7:46 pm

for me it was just a few times, same signal strength as coastguard.
spot on 156.0MHz on my airspy, stuck relay?
Airspy R2 on a Discone
rtlsdr v3 on a choc bloc copper dipole.
Windows 10 and Antergos Linux.
Yupiteru MVT-9000 MKII telescopic ant.
RSP2 Pro currently unused.
deadite66
 
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Joined: Sun Dec 20, 2015 6:38 pm
Location: Great Yarmouth

Re: Newbie question about 156.000

Postby Johan Beck » Sun Aug 06, 2017 9:52 pm

It seems in the Uk you guys have the same problem as we have in The Netherlands. On several "cheap" receivers many listeners also have a continues signal on 156.000. Maybe it's a so called "birdy". A signal produced by the receiver itself. I also have this on 128.000 MHz. On "professional" receivers such as Icom or an original maritime VHF radio I don't have this problem. What you can do is program 155.995 and 156.005 MHz, maybe then the signal is gone on 1 of these frequencies.
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Re: Newbie question about 156.000

Postby Snapey75 » Sun Aug 06, 2017 10:48 pm

My old sky wifi box used to interfere with 156.000mhz with a constant noise. Unplugged it and interference went away.

Neil
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Re: Newbie question about 156.000

Postby G4RMT » Mon Aug 07, 2017 9:18 am

There are lots of nasty things on that channel. Switch mode power supplies seem most common, and I cannot have this one active in my van because my Yaesu constantly lifts the squelch on that channel. A pain!
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Re: Newbie question about 156.000

Postby BlackKnight_UK » Mon Aug 07, 2017 11:33 am

I get it too, its annoying, the one frequency I really want to monitor and I can't. Tried several different receivers in different locations, same problem.
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Re: Newbie question about 156.000

Postby deadite66 » Mon Aug 07, 2017 12:26 pm

always see this on rtlsdr, airspy and my rsp2, not spot on 156 so don't think it's a birdie.

image from my airspy, i can use 10k bandwidth to ignore it.
Image
Airspy R2 on a Discone
rtlsdr v3 on a choc bloc copper dipole.
Windows 10 and Antergos Linux.
Yupiteru MVT-9000 MKII telescopic ant.
RSP2 Pro currently unused.
deadite66
 
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Joined: Sun Dec 20, 2015 6:38 pm
Location: Great Yarmouth

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