VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Avionics / Interiors / Fiberglass > APRS Tracking
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #151  
Old 04-03-2015, 07:26 PM
n468ac's Avatar
n468ac n468ac is offline
 
Join Date: Jun 2005
Location: C09 - Morris
Posts: 579
Thumbs up

Thanks Glen, I got my iGate up and running today
__________________
(This post by: Christopher Checca EAA Lifetime Member #799388)

Allen Checca (father)
Christopher Checca (son)

RV-6A - N468AC
ENGINE: Lycoming 180 HP O-360-A1A
PROPELLER: Senisentch 72FM859-1-85
WEIGHT: Empty Aircraft 1152 lbs
BASED: KC09 - Morris, IL.
Flying since June 6, 2005
N468AC Web Site
Reply With Quote
  #152  
Old 05-19-2016, 07:50 PM
humptybump's Avatar
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,073
Default Stable iGate with Raspberry Pi and SDR

Over the past year I've received a few private messages and email asking if I had a working solution for an iGate build with one of the USB SDR dongles (that's a 'software defined radio').

I can now say - with reasonable confidence - yes.

I am completing final performance tests on reception and will have statistical data in another 48 hours.

I will be replacing the iGate at Hopalong (because Bill reported the last one overheated ). I also hope to get one installed at an undisclosed location in New Hampshire to take care of a big void up there. I will replace the one at 53VG with this new version as a continuous test platform.

Power usage is around 5W and it is tolerant of power failures.

For anyone who wants to build one, I will write a short blog post with the shopping list, a downloadable image and instructions.

The cost of parts will be around $60. (Buying knock-off hardware from the Pacific Rim could cut the cost in half.)


There's no need for a picture. It looks just like a Raspberry Pi with a USB stick on the end
__________________
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG

Last edited by humptybump : 05-19-2016 at 07:53 PM.
Reply With Quote
  #153  
Old 05-20-2016, 06:57 PM
humptybump's Avatar
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,073
Default RPi+SDR test results

I ran a set of comparative benchmarks for the mew iGate design.

I installed a splitter on my existing antenna. While the splitter does attenuate the signal, it does so equally so it was a valid test.

One feel went to the Kenwood on my old iGate and the other feed went to the SDR.

After 1 hour, the SDR had successfully received and processed approximately 10% less than the radio. After 3 hours, it had settled in and the SDR was successfully processing 6%-8% fewer messages.

The data format was sufficiently gorpy that I did not bother to determine which messages were missed. I also did not attempt extensive tuning on the gain setting of the SDR because reducing the gain was losing weak signals and increasing the gain was blowing out stronger signals.

I'll make one more post with the link to a shopping list, instructions, and downloads.

Beyond that, the new iGate is now on-line at 53VG and will remain so.
__________________
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG
Reply With Quote
  #154  
Old 05-20-2016, 08:03 PM
Bill Boyd's Avatar
Bill Boyd Bill Boyd is offline
 
Join Date: Sep 2006
Location: Landing field "12VA"
Posts: 1,128
Default

[quote=humptybump;1080535]

I will be replacing the iGate at Hopalong (because Bill reported the last one overheated ).

Yeah, from the looks of the gun safe, I'd say we baked the raspberry pi's predecessor at around 1600F for most if an evening.

Eager to try it out, Glen. You are a masterful tinkerer, my friend, and the flying APRS community is indebted to you. After 2020, we may not need any of this, but until then, its nice to be able to keep tabs on the Russian, and others.

-Bill
Reply With Quote
  #155  
Old 05-22-2016, 01:38 PM
humptybump's Avatar
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,073
Default DIY iGates - instructions

I introduce the piGateSDR Mk III (a title coined by the recipient of the first of these to escape into the wild).

__________________
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG
Reply With Quote
  #156  
Old 06-19-2016, 02:24 PM
humptybump's Avatar
humptybump humptybump is offline
 
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,073
Default

Just a quick update (and probably the end of this thread) ...


I'm officially a bit surprised. The SDR iGate is performing a tiny bit better than the Baofeng radio version and just a tiny bit worse than my Kenwood radio version.

Using standard parts this iGate is about $90 and using knock-off parts, this iGate can be assembled for less $40.
__________________
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 09:26 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.