I purchased this as a clock source for a portable frequency meter / counter. It is small and compact. Runs on USB or a voltage supply between 5 and 10 VDC. Frequency is spot on. I reached out to the seller several times to discuss appropriate techniques to drive a TTL chip. Response was almost immediate and very useful suggestions were offered. I would definitely purchase from GPIO again.

Glen | Nov. 18, 2020

The GPIO Labs HI LNA is perfect for home Radio Astronomy.

For Hydrogen Line Pre-filtered LNA 1420MHz w BIAS TEE

We've purchased 4 of these amplifiers for our array of radio telescopes. With these sensitive amplifiers we can see the Spiral Arms of the Milky Way in a few seconds.

Olivier | May 1, 2019

Good product

For 2.4 GHz Bandpass filter WiFi Zigbee Bluetooth ISM

This BP filter has exactly the characteristics announced by the manufacturer,sizes and price are also good. I recommand for purchase.

Response from GPIO Labs | May 1, 2019

Thank you for your positive feedback.

A.Tahir | June 12, 2017

I received the parcel 12-06-2017 thanks

For 433 MHz Bandpass Filter Band Pass; 5 MHz Bandwidth

I will write the full review, after the test with my LEO satellite antenna
A.Tahir DENGIZ, TA2T (TAMSAT)

Response from GPIO Labs | June 22, 2017

Thank you -- we look forward to the review.

Christopher | June 23, 2016

Great, tiny preamp!

For Ultra Low Noise Amplifier 10 MHz to 4000 MHz

I am using it as a preamp for a RTL SDR USB dongle. It is so tiny, but works so well! Pulls in ADS-B plane signals and AIS ship signals from much further out.

Response from GPIO Labs | June 25, 2016

Thank you for the positive feedback! Best wishes from GPIO Labs.

Tindie

GPIO Labs

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