Saguaro SR-74 Shortwave Receiver

AVAILABLE SOON! Pre-order now to get on the list for the first production run. Choose "Check" at check-out to avoid being charged until it ships.

Explore the fun of shortwave listening, mimicking the old slide-rule dials of yesteryear, but brought up-to-date with modern technology. No dial cords to string! No vacuum tubes! Can also be used by DIYers as a teaching/learning platform for experimenting with SDR's, Raspberry Pi's or really, anything you can imagine!

The Saguaro SR-74 shortwave receiver kit uses a Raspberry Pi 4B (4GB or 8GB) controlling an SDRPlay RSP1A SDR, which covers 1kHz (VLF) to 2GHz (Microwaves) with cellular frequencies blocked. An SMA connector on the rear panel can connect to any antenna(s) you want in that frequency range. Includes the Raspbian Linux OS image that includes SDR software provided by SDRPlay. Run Cubic SDR out of the box, or run our "Shortwave receiver emulator" software that make it look like the shortwave radios of yesteryear. The RSP1A is a 14 bit SDR that receives AM, SSB, CW, FM and more.

The kit consists of:

• High quality two-piece .063" sanded, chromated aluminum chassis, with captive nuts and standoffs, black painted top cover, silkscreened back panel, polycarbonate front panel overlay and screw-on rubber feet.
• Pre-assembled cables
• Controller PC board (soldering required through-hole kit) with Atmel Mega 644P microprocessor that reads the tuning encoder and RFG and volume control pots and sends that data via the GPIO port to the Raspberry Pi for processing. Also includes CW keyer, with back panel controls for pitch, speed and volume.
• High quality, 8 ohm, 4" permanent magnet loudspeaker
• 1/4" headphone jack on the front panel (which mutes the speaker), with external speaker 1/8" stereo minijack on the back panel, always active 
• Built-in transformer-operated AC power supply (100-240VAC, 50/60 Hz), double fused, with safety shield, and 12V DC input. Requires about 2A at 12V
• Matrix Orbital HTT70A IPS 1024x600 HDMI display with resistive touchscreen
• "Velvet-touch" 128 pulse-per-revolution optical encoder and tuning knob
• RFG and AFG pots, with knobs
• On/off toggle switch
• Optional RSP1A SDR (Optional because we know many already have one. If you want to use one you already have, no need to order it here)
• Optional Raspberry Pi 4B with integral fan. Choose 4GB or 8GB model. (Optional because we know many already have one. If you want to use one you already have, no need to order it here)
• Mounting holes for DIYers to add other boards of their own creation
• MicroSD memory card with Raspbian Linux and all necessary software
• Wireless keyboard and mouse