Radio Jove Try #2

[kb3puw]

I resurrected my 15 meter (21MHz) dipole to try and see if I could detect any Radio Jove related signals.  I am using a Nooelec V5 SDR which can handle this frequency range.

There sure are a lot of interfering radio transmissions in this band - seems that most are radar or digital ham.  I did my best to filter out as much as I could so I could scale the data to show data that is possibly of interest.  My samples were 10 seconds, but I averaged them so the plot only has a resolution of about 20 seconds.

Can anyone let me know if  wide yellow bands are signals or RFI?

[Dave Typinski]

Looks like you may have caught some solar Type III bursting starting around 1652 UTC.  Here's what we saw during the same time span.  Time UTC on the horizontal, freq in MHz on the vertical.

Maybe try a much shorter integration time?
--
Dave

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[kb3puw]

Dave - I changed my code to display in UTC.  I don't think it is lining up with the sample you provided.

I would like to record higher time resolution and much longer time periods, but IFAverage does not seem to be a good choice for this.

What do you use?

To view this discussion visit https://groups.google.com/d/msgid/sara-list/6906E41A.4090001%40typnet.net.

[Dave Typinski]

I use a swept frequency spectrograph, ancient tech by today's standards.

Since you're using an SDR, then SDR Console plus SDRC2RSS plus Radio Sky
Spectrograph might get the job done for you. Here's the Radio JOVE receiver
manual -- it's written for the SDRPLay RSP1B receiver, but it also works for a
lot of other receivers.

https://radiojove.gsfc.nasa.gov/radio_telescope/manuals/RJ2.1_SDR_Receiver_Manual_with_RSP1B.pdf

Failing that, might want to post a note over on the Radio JOVE groups.io forum.
Lots of helpful people over there, many of whom know way more than I do about
how to get SDRs working for HF band radio astronomy.

https://groups.io/g/radio-jove/

--
Dave

On 11/2/25 19:26, kb3puw wrote:
> Dave - I changed my code to display in UTC. I don't think it is lining up with
> the sample you provided.
> I would like to record higher time resolution and much longer time periods, but
> IFAverage does not seem to be a good choice for this.
> What do you use?
>

> Jove2.jpg
>
>
> On Sat, Nov 1, 2025 at 11:55 PM Dave Typinski <dav...@typnet.net
> <mailto:dav...@typnet.net>> wrote:
>
> Looks like you may have caught some solar Type III bursting starting around
> 1652 UTC. Here's what we saw during the same time span. Time UTC on the
> horizontal, freq in MHz on the vertical.
>
> Maybe try a much shorter integration time?
> --
> Dave
>
>
>
>
>
>

> On 11/1/25 19:21, kb3puw wrote:
>> I resurrected my 15 meter (21MHz) dipole to try and see if I could detect
>> any Radio Jove related signals. I am using a Nooelec V5 SDR which can
>> handle this frequency range.
>>
>> There sure are a lot of interfering radio transmissions in this band -
>> seems that most are radar or digital ham. I did my best to filter out as
>> much as I could so I could scale the data to show data that is possibly of
>> interest. My samples were 10 seconds, but I averaged them so the plot
>> only has a resolution of about 20 seconds.
>>
>> Can anyone let me know if wide yellow bands are signals or RFI?
>>

>> Radio Jove Sampling.jpg
>> --
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>
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