We’re proud to introduce our SDR AM (VSB) & FM ATV Receiver.
Here is what the main page looks like:
And it runs on SDR’s with the Zync 7020 and AD936x. Video and audio are available via the webpage, and audio can be played using VBAN, giving you low latency audio.
All the usual features of a receiver are built-in, you can finally retire your old analog receivers!
It runs on:
But also on:
Which is basically the same “Fishball” based version, but with additional GPIO’s.
A hardware extension, providing 10 bit video and 16bit stereo audio is on it’s way and will be available in the near future (end of this year).
The hardware to get analog video and audio.
Please find the firmware in a zipfile in the download section. Updates will be made available as online updates from within the webpage.
Have fun!
Team FM-ATV
Willem, PE1PCF & David, PE1MUD
ADDENDUM – Featurelist
Stand-alone FM and AM amateur television receiver, built on a Zynq-7020 SDR board with an AD936x transceiver. All processing runs on the board, and control is through a built-in web interface.
Reception
- Tuning: 70–6000 MHz directly, higher bands through an LNB
- Modulation: FM-ATV and AM-VSB, selectable per memory
- Sample rate: 54 MS/s
- Channel filters: 1–27 MHz in 1 MHz steps, plus 33 MHz
- Analog filter: 30, 40 or 56 MHz
- Automagic: automatic bandwidth from the measured C/N (27 down to 4 MHz), resistant to radar pulses
- Capture filter: selectable 12, 18 or 27 MHz for tuning steps of 5 MHz or more
- AFC: keeps the station centered
- Seek and find: seek up and down, plus a find function that locates a nearby station, even below the FM threshold
- Gain: slow AGC, fast AGC or manual
MagicSync sync recovery
- Measurement in the FPGA, control on the ARM processor
- Stable sync and picture from weak or noisy sources
- Quality indication from LOST to PERFECT
- NO VIDEO message in the picture when all is lost
AM-VSB
- Synchronous detection with a PLL on the vision carrier
- Finds the carrier in the spectrum, up to ±2 MHz from the tuning
- Catches the carrier again whFC on
- Video filter 5, 3 or 2 MHz, chosen automatically from the S/N
- FM sound on 5.5 MHz
Audio
- NICAM stereo decoding, with display
- Dual FM subcarriers, 5.5–10 MHz
- 50 or 75 kHz deviation, 50 o
- Automatic fallback from NICAM to FM
- Squelch
- I2S output
- Sound in the browser
- VBAN network audio to up to 6 destinations
Video monitoring in the browser
- Live color preview with PAL decoding
- JPEG or lossless D1 (720 × 576)
- Picture controls: saturation, hue and gamma
- Temporal noise filter for the preview
- Waveform monitor with line selection, field sweep and V sync views
- Vectorscope
- WSS aspect ratio detection (4:3 / 16:9)
- On-screen display with filter, RSSI and C/N
- Nicam station ID is shown when present, and used for autonaming saved presets
Measurement
- IF spectrum across the full m
- C/N and S/N, RSSI, sync level
- Audio level meters and NICAM
- FPGA and AD936x temperature
Operation
- Web interface, nothing to install on the PC; multiple browsers can connect
- Station memories with name, frequency, mode, LNB and audio settings
- LNB list with per-memory selection, including inverted (high-side) conversion
- Network setup: static IP or DHCP, on Ethernet or IP over USB
- Firmware update over the internet from the web interface, with release notes and SHA-256 check
- Set Defaults button for the AD936x filters
- SD card install: a new board sets itself up on first start
- Automatically creates a unique MAC address if the board has none
Not yet available
- Analog video and audio output board (DAC900, PCM5102A): in development
- LNB voltage and 22 kHz control through an ESP32: the settings exist on the page, but the hardware is not finished
- Seek is FM only; with AM you tune to the vision carrier