The attached zip contains:

1. Failsafe - failsf.wav
2. Link quality low - lkqalw.wav
3. Link quality critical - lkqacr.wav
4. RSSI - rssi.wav
5. VFR - vfr.wav
6. Range critical - rngcrt.wav

Here's how I created the files:

STEP 1. Generate the spoken text
fromtexttospeech.com
Emma, British, medium speed (used for files attached to this post)
- OR -
Alice, US English, medium or slow speed

http://openrcforums.com/forum/viewtopic.php?t=3823

STEP 2. Export to .wav
Kilrah posted this in my thread on the same topic, worked for me:

In Audacity:
- Open your file
- Tracks -> Stereo track to mono
- Set Project Rate to 32000Hz at the bottom left of the window
- File -> Export, Wav Signed 16 bit PCM
- Click "clear" on the metadata screen that appears

https://opentx.gitbooks.io/manual-fo...ced/audio.html

• File Name: 123456.wav (up to 6 characters plus .wav)
• Sample Rate: 32 kHz (or 16 Khz, 8Khz)
• Bits / Sample: 16 (or 8)
• Tracks: 1, mono
• Compression Codec: PCM (or u-law, a-law)

A DIY servo / power bus from perf board, adhesive backed copper foil, and 0.1-inch header.

In another variant, I added power leads and other wiring directly to the board....Continue Reading

A few details on the 900MHz antenna I used on a 2m electric glider with a FrSky R9MX receiver until recently.

The antenna was built based on calculated lengths without the benefit of testing with the equipment I later acquired. It performed so well, I simply kept flying with it.

For further details on the antenna construction and performance, see the post in the comments.

Model: Art Hobby Sky 2m electric glider
Location: Urban park
Date: December 12, 2020

Transmitter 1: QX7 ACCESS, R9 external module, ACCESS protocol, 20dBm power, VAS Longshot antenna, vertically polarized
Transmitter 2: QX7 legacy, Ghost external module, GHST protocol, 20dBm power, DIY crosshair antenna, circularly polarized, other antenna deactivated

Receiver 1: R9 MX with DIY monopole with 2 ground plane radials, vertically polarized
Receiver 2: Ghost Atto with standard FrSky replacement monopole, vertically polarized

Transmitter and receiver 1 (R9) were used to control the model. Transmitter and receiver 2 (Ghost) were used to log data only.

During the test flight, I held transmitter 1 in my hands to control the model. Transmitter 2 rested on my flight bag on the ground in an upright position. The antennas on both transmitters were directional. However, I only tracked the model with the transmitter in my hands. This put the Ghost system at a possible disadvantage. Still, the link quality shows comparable performance. In fact, this result with Ghost is by the far the best I've obtained with any 2.4GHz system I've tested in a similar manner.

Ongoing tests of G-RX8 firmware in an Art Hobby Sky 2m electric glider.

Date: April 11, 2020
Location: "Falcon Field" (urban park)
QX7 FW: 2.1.0 (beta)
G-RX8 FW: ACCST 2.1.0E (beta)
Notes: Uncommanded loop, likely a failsafe

Not so much a build log, but more a series of pictures and comments on building an Art Hobby Odyssey.

I've got some modifications in mind, there's a whole winter ahead, and I'm a slow builder. So don't expect a furious pace.

First order of business is a bit of nose surgery. Andre kindly sent me an untrimmed fuselage so I could I cut it to suit a smaller diameter spinner, a 32mm unit from Vladimir's Model.

Until recently, a NAN Omega languished on my bench, partially completed. Truth be told, it had migrated off the bench into storage for many moons, a victim of my distraction by other projects and commitments.

Happily, things have changed. The Omega has been completed and flown. It was my first all-composite model. I can share a few pictures, impressions, and a lesson learned the hard way.

Tonight is the beginning. I'll jot down these few thoughts and add some pictures. In the coming days, I'll come back to round out the report. Stay tuned....Continue Reading

Modified with full span flaps and ailerons, and horizontal stab on pylon mount.

Weight: ~760g with 1050 mAh 3S battery
Wing loading: 24.3 g/dm^2
Motor: Leopard LC250-25 / 7T 6pole 4750KV with 5:1
Prop: Vitaprop 12x7
Battery: Tattu 850mAh or 1050mAh 3S
Power: ~300W or so.
Climb rate: 13-16m/s depending on battery

Continue reading to see 100+ build pics with comments....Continue Reading

Modified from V-tail to X-tail with flying stab and two piece wing....Continue Reading