algwat
05-04-2016, 07:33 AM
Can you help find this frequency broadcaster to confirm meteors?
Currently I am listening using hsdr in cw mode to a frequency of 57.6 Mhz, just offset by about 4khz.
It sits about -65db on HDSR and is very constant. Intermittently I see a power rise pulse across the carrier.
It does vary in size and occurrance. I have yet to find the broadcaster location, but suspect it to be over a north mountain range about 400km away?.
I am now using this antenna Cometal rough-dressler-antena (http://cometal-comets.blogspot.com.au/2015/09/rough-dressler-antena.html), with a minikits powered LNA this one powered with 5vdc,
PGA-103 Low Noise Amp 0.05-3GHz
- PGA Option1: PGA-103 B-ENC ( Buil..
- PGA Option2 ( For Built Products Only ): PGA-103 mounted near..
I can post a few images and a small sound file, would like your opinion on it.
I have set hdsr to the carrier frequency and use an audio notch at 1000hz to blank the signal. The event overcomes this notch either side of 1000hz.
I have also set the squelch to blank noise levels. An event over comes this also.
This allows hdsr to be left in audio record mode for a long time, as only events the break over these two settings are recorded. usually about a few seconds worth of audio, a ping and fading noise.
I did see a large event that saturated the levels, and a small one that barely registered .
Also an event that seemed connected to a local helicopter passing across the north of my location.
I use a second sdr to locate asdb aircraft pings , but not sure about relating these to events as yet....
some example at this link,
http://cometal-comets.blogspot.com.au/2016/04/radio-meteors-with-small-equipment.html
The first section is noise, carrier, notch level then, pings across about an hour...
Kind regards, Alan.
Currently I am listening using hsdr in cw mode to a frequency of 57.6 Mhz, just offset by about 4khz.
It sits about -65db on HDSR and is very constant. Intermittently I see a power rise pulse across the carrier.
It does vary in size and occurrance. I have yet to find the broadcaster location, but suspect it to be over a north mountain range about 400km away?.
I am now using this antenna Cometal rough-dressler-antena (http://cometal-comets.blogspot.com.au/2015/09/rough-dressler-antena.html), with a minikits powered LNA this one powered with 5vdc,
PGA-103 Low Noise Amp 0.05-3GHz
- PGA Option1: PGA-103 B-ENC ( Buil..
- PGA Option2 ( For Built Products Only ): PGA-103 mounted near..
I can post a few images and a small sound file, would like your opinion on it.
I have set hdsr to the carrier frequency and use an audio notch at 1000hz to blank the signal. The event overcomes this notch either side of 1000hz.
I have also set the squelch to blank noise levels. An event over comes this also.
This allows hdsr to be left in audio record mode for a long time, as only events the break over these two settings are recorded. usually about a few seconds worth of audio, a ping and fading noise.
I did see a large event that saturated the levels, and a small one that barely registered .
Also an event that seemed connected to a local helicopter passing across the north of my location.
I use a second sdr to locate asdb aircraft pings , but not sure about relating these to events as yet....
some example at this link,
http://cometal-comets.blogspot.com.au/2016/04/radio-meteors-with-small-equipment.html
The first section is noise, carrier, notch level then, pings across about an hour...
Kind regards, Alan.