The SDR's are so cheap I decided to buy another one and use two of them. 
One as a drive and one as a service. That should hopefully work.

But thanks for the suggestion!

Thanks,

Glen Collins

On Saturday, January 14, 2023 at 1:08:52 AM UTC-8 an oldman wrote:

> switch between two frequencies witth rtl_433
> you can try something like this rtl_433 -f 433920000 -f 315M -H 1
> but you will most likely miss some of the signals
>
> On Friday, January 13, 2023 at 8:30:23 PM UTC-6 [email protected] wrote:
>
>> Vince,
>>     Thanks for the reply.
>>
>> I'm using VmWare as my virtualization engine using intel architecture. 
>> The Weewx is running under a virtualized Redhat 8 instance.
>>
>> 1) Thanks! I will look into adding a broker. So if I get this correct the 
>> Raspberry PI will send to the broker and the Redhat 8 server running Weewx 
>> will pick up the message from the broker?
>>
>> 2) I kind of figured that too. I see no way to switch between two 
>> frequencies with just one SDR running. I ordered another SDR so now I'll 
>> have two of them running.
>>
>> 3) I was thinking Purpleair too. That would probably be the easiest if 
>> it's supported by a plugin.
>>
>> Thanks a lot. This has helped me understand were I need to go with this.
>>
>> Regards,
>>
>> Glen
>>
>> On Friday, January 13, 2023 at 10:37:10 AM UTC-8 vince wrote:
>> I guess I have to ask what kind of computer is running your virtual 
>> machine, and what virtualization software are you running.  We kinda need 
>> to know your whole setup from a hardware perspective.
>>
>> For (1) FWIW - I use MQTT.  I run a primary Davis VP2 station connected 
>> to a pi4.  I run a secondary Ecowitt weewx station in a Docker container on 
>> a Ubuntu x86_64 host that publishes its data to MQTT using the MQTT 
>> extension.  The Davis weewx subscribes to the MQTT data using the 
>> MQTTsubscribe extension. That means running a MQTT broker someplace in the 
>> middle of course, but I do that in Docker as well.  It's simpler in 
>> practice than it sounds.
>>
>> For (2) I *think* you need separate instances and radios to listen for 
>> each frequency, but I might be mistaken there.   For the AQ stuff, it 
>> depends on what you buy.  If you go PurpleAir there's an extension for 
>> that.  If you go with a Davis Airlink, you could probably modify the 
>> purpleair extension I'd think.  The two are very similar.
>>
>> For (3) there are too many possibilities to answer there. Personally I 
>> really like MQTT as a central collector of stuff from all kinds of sources, 
>> and MQTTsubscribe on my primary weewx box to grab the readings I'm looking 
>> for, unless there's an explicit extension already that I can use directly 
>> (purpleair, for me).
>>
>> Adding a MQTT broker (use mosquitto) is very easy to do and lightweight.
>>
>

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