I've thought about a decent SA, but have never had the money (or the
luck to find one). Thanks for the reminder about the RSP1A.
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I've been using my SDR dongle for checking spectra - it's limited to
1 mhz of the spectrum at a time, but it CAN be used to check FM
deviation and so on - plus purity of signal (and even give
indications of how far down spurs and so on are). That's pretty
good for something less than $20 - and I forgot to add that to the
list I put up!
On 5/17/20 11:52 AM, Evan Hand wrote:
For me, the basic is:
1 - DMM
2 - An SWR/Power meter
3 - A 100Mhz or better oscilloscope
4 - A PC
Nice to have if you are going to do surgery, PA mods, or antenna
1 - An SDR Play RSP1A with a -50 DB tap and step attenuator to use
as a Spectrum Analyzer (SA)
2 - NanoVNA or Antuino (from HF Signals)
3 - 50MHz signal generator
Really nice to have:
1 - 2 GHz spectrum analyzer (Sigelent or Rigol)
All of the DSO Oscilloscopes that I have seen are only good to 1
MHz or so. You really need the 100 MHz to do testing on a
superheterodyne transceiver like the uBITX.
I have been pleasantly surprised by the flexibility and usefulness
of the SDR Play RSP1A as a SA. Of course, I would really like a
Sigelent or Rigol SA, just not ready to spend $1,000+.
Above are my thoughts, others may be different, and YMMV.