ALSEYE
ALSEYE Upconverter for RTL2383U SDR 150K-30MHz w/TCXO 2 in 1 accessory
An upconverter extending an RTL2383U SDR to 150 kHz–30 MHz with a 125 MHz TCXO local oscillator, powered at 5 V and 1.6 W via USB
- Extends SDR reception down to 150 kHz
- Covers MF, LF, VLF and ULF bands
- Runs on 5 V USB power at 1.6 W
- Includes USB cable and metal connector
- 125 MHz TCXO oscillator for precise tuning
ALSEYE RTL2383U Upconverter Accessory
The ALSEYE upconverter is a 2 in 1 accessory designed for the RTL2383U software-defined radio receiver. It extends the receiver's tuning range down to 150 kHz, opening MF, LF, VLF and ULF bands for monitoring. The unit draws 1.6 W from a 5 V USB supply and includes a connecting cable plus a metal connector for a secure link.
150 kHz to 30 MHz Coverage with 125 MHz LO
The upconverter translates signals from 150 kHz through 30 MHz into a range the RTL2383U can process, using a precise 125 MHz local oscillator. Frequency setting is handled in software by adding 125 MHz to the target; for example, 7.05 MHz becomes 123.05 MHz. This architecture provides wide low-frequency headroom while the 30 MHz ceiling marks where the translation stops.
Upgrades Bare RTL2383U for LF and VLF Work
Without this accessory the RTL2383U cannot reach MF, LF, VLF or ULF signals, so the upconverter is the necessary step for longwave, navigational beacon or submarine-band listening. It is not suited for operators who only need VHF or UHF coverage above 30 MHz, nor for receivers other than the RTL2383U that lack the required software offset support.
Highlights
- Extends SDR reception down to 150 kHz
- Covers MF, LF, VLF and ULF bands
- Runs on 5 V USB power at 1.6 W
- Includes USB cable and metal connector
- 125 MHz TCXO oscillator for precise tuning
Specifications
No published specifications for this item yet.
Questions about this item
Will the ALSEYE upconverter work with my existing RTL2383U SDR receiver?
Yes, it is designed specifically for the RTL2383U SDR and connects via the included USB cable to extend reception from 150 kHz up to 30 MHz.
How do I verify the 125 MHz local oscillator is set correctly after installation?
Tune your software to a known signal such as 7.05 MHz; the oscillator should read 123.05 MHz (125 minus 7.05) confirming accurate frequency conversion.
What cables and connectors come in the box versus what I must source myself?
The package includes a USB connecting cable, additional cables and a metal connector; the RTL2383U SDR receiver itself is not included and must be purchased separately.
New to this? Buying a laptop with crypto, start to finish — what to check, what it costs to pay, and what is never asked for.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
