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While not seen much these days, there may still be a place for a dip meter. It allows quick checking of resonance, capacitance, inductance, and can even be used as an ad-hoc signal generator. This is

For simple meters the issue is hey are linear... DB is 10LOG(p1/p2). To drive a DMM for logs you must convert a voltage to a log(voltage). There are logarithmic op amps? and stability with

Another good source of information on the ARduino along with the ESP32 and ESP8266 is at randomnerdtutorials.com He has a lot of interesting projects and information on on these platforms. There is

Hello I started this several times but found each time that the document became too long and complicated. Shown here is the final and much smaller version. *MINIMALIST ARDUINO BEGINNER* So you want to

I think that we should establish a mini-specifications. For example : Characteristics of the spectrum analyzer: Bandwidth for example, standalone device or output on PC or oscilloscope? Cost of the

I have been working on a self contaned version of this for a while.? Started to run out of program space and memory with the Arduino I have been using. Now paying with an ESP32 that will give me all

Yeah this is perfect. I’ll dig into it when I get back home. To make it self-contained, the computer code could be ported to a Raspberry Pi and use it with the TFT. It’s certainly usable connected

I'm assuming everybody's seen this:- https://hfsignals.blogspot.com/p/specan-reboot-of-w7zoi.html ( https://hfsignals.blogspot.com/p/specan-reboot-of-w7zoi.html ) Doesn't have the TFT to be self

Unfortunately my Belgian is not so good…! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator

a beautiful achievement of our Belgian friends. https://drive.google.com/file/d/0B6ezI2iUdT9fT3lZZGtUYkJERkE/edit 73 QRO -- Gilles - F1BFU/FR

Brian Agreed on the "not for $12 anymore" part. But...some of us hoarded a few of the $4.50 AD9850 DDS boards way back when they were cheap. We can still come close to that $12 figure...maybe?

I like the design but you're not going to do it for $12 any more. An AD9850 board is over $20 these days. -- “si vis pacem, para bellum”

I was thinking the same thing and while search for such a kit I came across this last week: https://www.qsl.net/n9zia/spec/ Regards, Steve Krzysiak Call: 312.380.6268 Page: 312.957.6842 skype:

Hi Gilles Please report back about how well this attenuator works. Programmable attenuator from 0 to 30db. There are three models 30db, 60db and 90db. https://www.ebay.co.uk/itm/182320176213 73 Ken

In my opinion, if we could put our heads together to generate a set of modern boards and build instructions (maybe a Kit from Kees) for something like this that included a TFT scope, so

http://py2ohh.w2c.com.br/trx/alc4ad9850/alc4ad9850.html It is in portuguese use google translate. 73 py2ohh miguel

https://www.instructables.com/id/Arduino-30MHZ-DDS-Signal-Generator-In-12/ _._

http://www.arrl.org/files/file/Technology/tis/info/pdf/9506033.pdf _._

http://www.arrl.org/files/file/Technology/tis/info/pdf/9808035.pdf http://www.arrl.org/files/file/Technology/tis/info/pdf/9809037.pdf _._

Gilles - F1BFU /FR\\ I worked with Hans on several projects during the time he was designing and building his spectrum analyzer, so we have discussed it several times in the past. It obviously works