# Discovery Dish RTLSDR-Blog L-Band ACARS

**URL:** <https://community.airframes.io/t/discovery-dish-rtlsdr-blog-l-band-acars/181>\
**Category:** Antennas\
**Tags:** l-band, dish\
**Created:** [February 1, 2025, 1:56am UTC](https://community.airframes.io/t/discovery-dish-rtlsdr-blog-l-band-acars/181 "2025-02-01T01:56:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![thebaldgeek](https://community.airframes.io/user_avatar/community.airframes.io/thebaldgeek/32/141_2.png) [@thebaldgeek](https://community.airframes.io/u/thebaldgeek)\
**Post date:** [February 1, 2025, 9:55pm UTC](https://community.airframes.io/t/discovery-dish-rtlsdr-blog-l-band-acars/181/2 "2025-02-01T21:55:20Z")

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Not an ADSB SAW filter, but wondering what @Lothar_ot_Hill_Peeps makes of this SAW setup?

> [@Lothar of the Hill People's ADS-B 1090 filter data](https://community.airframes.io/t/lothar-of-the-hill-peoples-ads-b-1090-filter-data/125):
>
> Lothar here, I will update this info as more becomes available. If you buy or measure a 1090 or 978 filter, LMK, and I will add the data with attribution. You can see full Info on my cavity filters on Ebay, but if you are a feeder and buy direct from me, you get a "Friends and Family " discount that saves me Ebay and PayPal fees that are passed along to you. DM me for direct purchases. Here is the August 2024 Update. It included more manufacturer data, since \<@273192470572040192\> posted pix o…

 ![image](https://community.airframes.io/uploads/default/original/1X/a5cc6e7c903dc70ffbb48315e7e06ffe35b024c2.jpeg)

This is what’s under the can on the Discovery Dish L-Band ACARS feed.  
They were open about the typical design, LNA → SAW → LNA → SAW.  
But how do those SAW filters stack up?  
I mean, it works great, so does it matter? Yes, yes it does.

I’m on the fence about them using an SMA to BNC adaptor here.

 ![image](https://community.airframes.io/uploads/default/original/1X/afef63c42fe3c55fe4eb16fe9f4e0cab3bcfbb51.jpeg)

 ![image](https://community.airframes.io/uploads/default/original/1X/64e51db4424746ec2d012929d450e5cc0e038b54.jpeg)

For easy of assembly, I see why they did it… But… RF wise?

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_[View the full topic](https://community.airframes.io/t/discovery-dish-rtlsdr-blog-l-band-acars/181)._