Innovative Electronics for Model Aviation
Winged Shadow products are no longer available.

I retired and shut down production at the end of 2013. Now I am taking down the fancy website as well. Since there are thousands of products still in use, and instruction sheets tend to disappear, I've listed links to each instruction sheet below.

My thanks to all my customers over all the years.

Dave West, Owner & Principal Engineer
Winged Shadow Systems
To Our Customers
Winged Shadow Systems has discontinued its product line.
Product Files
The instruction files are in PDF format. Click the left mouse button to view them. Click the right mouse button and choose the "Save Target As..." option to save them to your computer. If you have trouble viewing these files, download a free copy of Adobe Reader here.

Earlier versions are listed in smaller text.

Sky Limit Altitude Limiter
Sky Limit Instruction Sheet Version 2
• • Sky Limit (Version 1) Instruction Sheet
Sky Limit Programmer Instruction Sheet

Thermal Scout Soaring Aid
Thermal Scout Instruction Sheet Version 3
• • Thermal Scout (Version 1 & 2) Instruction Sheet
"Soaring with the Thermal Scout" Flying Tips
Thermal Scout Output Mode Instruction Supplement Telemetry Interface

How High Altitmeter
How High RT Altimeter Instruction Sheet Version 3
Real-Time Altitude Instruction Supplement Spektrum & Hitec Telemetry Info
Using the How High RT with FrSky Telemetry
• • How High (Version 2) Instruction Sheet
• • How High (Version 1) Instruction Sheet
• • How High SP (Self-Powered) Instructions

How Fast Airspeed Instrument
How Fast Airspeed Instrument Instruction Sheet Version 2
• • How Fast (Version 1) Instruction Sheet

Battery Board
Smart Bat Battery Board Instruction Sheet
• • Battery Board Instruction Sheet

See How Display (for How High and How Fast)
See How Display Unit Instruction Sheet

R/C Reporter System Monitor
R/C Reporter Instruction Sheet
R/C Reporter-E Instruction Sheet
R/C Reporter Computer Interface Instruction Sheet
Interface Software Instructions

Program / Data Files (for the R/C Reporter)

The following files are stored in compressed ZIP format. Save them to your computer and then extract them using WinZip, PKZip, or similar program. - Complete Windows program for the R/C Reporter and Computer Interface. See the Computer Interface Instruction Sheet (above) for system requirements and installation details. (Version 3.0, 3/08, 2.5MB) - A collection of over a dozen example melody files in RTTTL format. (3/08, 5KB)