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Reviews For: QRP Labs VFO/Signal Generator

Category: Ham Radio Kits

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Review Summary For : QRP Labs VFO/Signal Generator
Reviews: 1MSRP: 60.00
Description:
Si5351A VFO/Signal Generator kit. A GPS receiver can be connected to maintain precise frequency output.
Product is in production
More Info: https://qrp-labs.com/vfo
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
0015
KT4WO Rating: 2022-09-11
Works Great Time Owned: more than 12 months.
Built this last year with the GPS as a GPS stabilized VFO.
When I ask QRP Labs about the stability they said:

"The accuracy of the VFO will be around 0.05 parts per million. It's good enough for many hobby purposes but it is not lab grade. "

I have found it to be at least 0.005PPM (+/- 5hz at 1Ghz) after
~60min warm-up.
Now I did make the Si5351A Synthesizer board into a
homebrew oven with some foam and that really helped.
Keep in mind, this IS NOT a GPSDO !! Also the output is a
square wave so you would need a low pass filter to feed a
10Mhz input on any equipment. The advantage over a GPSDO is
that it's a VFO, you are not stuck a 10Mhz. It's great for calibrating
HF rigs, etc. Easy to build and WELL worth the price.