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RTL SDR FM Player for your RTL-SDR USB dongle
#51
(04-29-2020, 03:30 PM)Chrisfromwa Wrote: @ktb

You have both an SDR and also the Sundtek dongle correct?
I'm trying to decide which route to go,  and was curious if you had to choose.  Would you buy again the Sundtek, or stick with the SDR?

I really like the idea of the Sundtek,  but their support seems to be really lacking and I'm not sure if they are even doing anything with it.  I haven't seen them answer any questions about this product on their forums for awhile now.
The Sundtek hardware seems pretty good, but Sundtek's support and application for the device is very poor. I honestly seem to get better general reception (picks up more stations) from the SDR dongle I'm using. The RDS capability of the Sundtek dongle may be superior and you do get stereo sound. I'm leaning toward using the SDR dongle for my project at this point. I may try developing a similar application/interface for the Sundtek as I did for the SDR dongle, but I'm not sure how soon that will be.

Sundtek dongle:
Lower CPU usage
Poor application
Stereo sound support
Good RDS functionality
Decent auto-scanning functionality

SDR Dongle with rtl_fm backend:
Higher CPU usage
Decent application
Mono sound support
Decent RDS functionality
No auto-scanning functionality

SDR Dongle with rtl_fm_streamer backend:
Higher CPU usage
Decent application
Stereo sound support
No RDS functionality (yet)
Not sure about quality of auto-scanning functionality
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#52
(05-01-2020, 03:14 PM)ktb Wrote:
(04-29-2020, 03:30 PM)Chrisfromwa Wrote: @ktb

You have both an SDR and also the Sundtek dongle correct?
I'm trying to decide which route to go,  and was curious if you had to choose.  Would you buy again the Sundtek, or stick with the SDR?

I really like the idea of the Sundtek,  but their support seems to be really lacking and I'm not sure if they are even doing anything with it.  I haven't seen them answer any questions about this product on their forums for awhile now.
The Sundtek hardware seems pretty good, but Sundtek's support and application for the device is very poor. I honestly seem to get better general reception (picks up more stations) from the SDR dongle I'm using. The RDS capability of the Sundtek dongle may be superior and you do get stereo sound. I'm leaning toward using the SDR dongle for my project at this point. I may try developing a similar application/interface for the Sundtek as I did for the SDR dongle, but I'm not sure how soon that will be.

Sundtek dongle:
Lower CPU usage
Poor application
Stereo sound support
Good RDS functionality
Decent auto-scanning functionality

SDR Dongle with rtl_fm backend:
Higher CPU usage
Decent application
Mono sound support
Decent RDS functionality
No auto-scanning functionality

SDR Dongle with rtl_fm_streamer backend:
Higher CPU usage
Decent application
Stereo sound support
No RDS functionality (yet)
Not sure about quality of auto-scanning functionality

Thanks for the info,  I didn't realize the SDR may not be stereo?  I would need that,  but I also want RDS.  lol,  why is there always a catch!
What is rtl_fm_streamer backend and rtl_fm backend mean?   Is it different ways the dongle picks up a signal?

The Sundtek seems so great,  I just don't get why they don't develop an application for it.  I would love to use something that uses less CPU as my 3b+ already gets laggy at times.
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#53
(05-01-2020, 03:27 PM)Chrisfromwa Wrote: Thanks for the info,  I didn't realize the SDR may not be stereo?  I would need that,  but I also want RDS.  lol,  why is there always a catch!
What is rtl_fm_streamer backend and rtl_fm backend mean?   Is it different ways the dongle picks up a signal?

rtl_fm is a command-line program from the rtl-sdr package which communicates directly with the SDR dongle to perform FM signal demodulation. It only supports mono sound.

rtl_fm_streamer was based on rtl_fm and performs a similar role, but supports stereo sound and operates as a server application instead of a simple command-line program.
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#54
@divingmule and @Ktb
Do you have any updates on your projects?

Looks like Nametec is out of business, so I'm back to looking at the SDR dongle again.
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#55
Are you guys still around?
Have either of you moved your projects to the car, and really had a chance to use it?

I really want to start an OAP project in my daily driver, but I need to have FM radio. So really curious how this has been working out over the past couple months.
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#56
dang, looks like this road is a dead-end too Sad
@bluewave, is there any chance you could look at their software on Github and improve and incorporate it into OAP?

It would be great if it ran as part of OAP, for example the volume control could be at the bottom of the screen like it does for bluetooth audio.
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#57
Sucks that this 1 feature is the main thing holding me back from going with OAP in my daily driver Sad
@KTB; and @divingmule;

I see you guys haven't been on the site in a long time, hopefully you come back.
I'm curious to know if you're still using your app, and how it's been working out. Any updates?

Any chance you could work together with Bluewave to maybe get a FM app built into OAP so it's more seamless?
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#58
Have you looked at something like this perhaps? ... I'm also wanting FM functionality ideally... though mainly for our drive-in theatre ... not that my project will be going anytime soon.

https://www.aliexpress.com/item/4000286905764.html?spm=a2g0o.productlist.0.0.17ac658fxvtGw4&algo_pvid=31286ac3-b712-4793-8018-cd0241152561&algo_expid=31286ac3-b712-4793-8018-cd0241152561-3&btsid=0ab6fa7b15970993418016624e761f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

GFunkbus76
 - Working on dual screen setup to run 1976 bus AV and dash... eventually.
 - Work in long-term progress lol

YouTube Channel for some related videos
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#59
(08-10-2020, 10:44 PM)GFunkbus76 Wrote: Have you looked at something like this perhaps? ... I'm also wanting FM functionality ideally... though mainly for our drive-in theatre ... not that my project will be going anytime soon.

https://www.aliexpress.com/item/4000286905764.html?spm=a2g0o.productlist.0.0.17ac658fxvtGw4&algo_pvid=31286ac3-b712-4793-8018-cd0241152561&algo_expid=31286ac3-b712-4793-8018-cd0241152561-3&btsid=0ab6fa7b15970993418016624e761f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_


Or this?
https://www.amazon.com/Digital-FM-Radio-Module-76-0MHz-108-0MHz/dp/B01N4AHISZ/ref=sr_1_3?crid=3GABVG3JG1PG5&dchild=1&keywords=fm+radio+receiver+module&qid=1597145760&s=electronics&sprefix=fm+radio+receiver%2Celectronics%2C223&sr=1-3

PDF instruction
https://images-na.ssl-images-amazon.com/...ATJDzL.pdf
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#60
Quote:Or this?
https://www.amazon.com/Digital-FM-Radio-Module-76-0MHz-108-0MHz/dp/B01N4AHISZ/ref=sr_1_3?crid=3GABVG3JG1PG5&dchild=1&keywords=fm+radio+receiver+module&qid=1597145760&s=electronics&sprefix=fm+radio+receiver%2Celectronics%2C223&sr=1-3

PDF instruction
https://images-na.ssl-images-amazon.com/...ATJDzL.pdf


That one looks like a good prospect.  I like the fact that it can be controlled via serial port.
"The glass is twice as big as it needs to be".
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