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Hi Mike, Couldn't? agree more. Before you take in account the measurement accuracy, No mater how many digits there are, the least significant digit is subject to +/- 1 rounding, so is to be ignored.

Hi, This goes into the deep end fast! Those four digits are resolution. Accuracy is a different thing entirely. I haven't looked at the article (I should) so I don't know what the four digits

I was looking over the latest QST magazine and I had a thought that I wanted to discuss with the group. On the cover was an interesting "dummy load" project that used an array of resistors in an oil

If we are going to power test equipment from Lithium based cells we should probably know more about how they work. I found this on-line video that is quite informative.

With the si5351 i strongly suggest to have the 1st if between 100 and 120mhz. This will give the largest range and fast sweeping as the si5351 can be swept with less register writes. There is a 8$

Many thanks Erik. Gilles - F1BFU /Fr -- Gilles - F1BFU/FR

Here you can find what i build https://github.com/erikkaashoek/specan-ui

Just in case you want to build a VNA Arduino nano, SI5351, 3 SA612, 4 opamps and a pc to do the difficult processing https://github.com/erikkaashoek/Tapr-VNA Contains sw, schematics and measurement

Giles Fantastic analyzer. Now others can follow your lead to make their own spectrum analysis tools. Thanks for sharing. Arv _._ wrote:

Hi Arv, Sharan, Erik and all I share with you the design of my future spectrum analyzer based on the Specan. I liked the construction of erikkaashoek. 73 QRO Gilles - F1BFU Fr -- Gilles - F1BFU/FR

has anyone every used or built the kit?Signal Quality Meter sold by "midnight design solutions"?? If so what are your thought about using it to find harmonics? ? thanksjohn kg9dk

Cheers Arv. I had a look at that one, very interesting.

Terry Good point. But I probably need to be careful how I comment it as well. Many of the scam sites just cannot resist adding a one-line comment to act as bait. Inexpensive Arduino Based Waverform

Arv, can I respectfully suggest that the posting of just a link and no accompanying text in the group be a no no. It is a commonly used ploy of scammers and other criminal types to trap people into

http://tinyurl.com/yddpwu37 _._

https://kv4qb.blogspot.com/2016/05/sna-jr-version-ii-update.html One of several blog posts about the SNAjR. and its accessories. Also links to gerber files and sketch. DuWayne -- DuWayne,? KV4QB

We had 30 built at 2 weekend buildathon. 14 months in the making. [image: image.png] 73 Ken

Looks good. Many seem to be finding that a simple SNA is not all that complex. _._

How about this SNA? Designed and bulit by Peel Amateur Radio Club. It's the PARC SNA and won 1st place at FDIM club night.

http://www.electronics-lab.com/scalar-network-analyser/ _._