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Yahoo Groups download
With Yahoo Groups shutting down, and not all of those I subscribe to moving over to groups .io. I wanted to grab a copy of the existing Yahoo Group data. I found directions on how to grab a download o
With Yahoo Groups shutting down, and not all of those I subscribe to moving over to groups .io. I wanted to grab a copy of the existing Yahoo Group data. I found directions on how to grab a download o
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DuWayne Schmidlkofer
· #3013
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Power Meter
I have had good luck with a RF power reference I built based on the one at W1GHZ.ORG. That and a step attenuator has been adequate for calibration of the AD8307 for general amateur radio use. Of cours
I have had good luck with a RF power reference I built based on the one at W1GHZ.ORG. That and a step attenuator has been adequate for calibration of the AD8307 for general amateur radio use. Of cours
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DuWayne Schmidlkofer
· #2859
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VNArduino project
Here is another 1 port VNA you might be interested in https://bitbucket.org/kuchura/eu1ky_aa_v3/wiki/Home DuWayne KV4QB
Here is another 1 port VNA you might be interested in https://bitbucket.org/kuchura/eu1ky_aa_v3/wiki/Home DuWayne KV4QB
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DuWayne Schmidlkofer
· #2802
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VNArduino project
I am working on a version based on the one at http://ra4nal.qrz.ru/vna.shtml I had several boards made from the Sprint Layout provided at that site. If you would like one let me know, and I will send
I am working on a version based on the one at http://ra4nal.qrz.ru/vna.shtml I had several boards made from the Sprint Layout provided at that site. If you would like one let me know, and I will send
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DuWayne Schmidlkofer
· #2795
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VARduino
Any one have any experience with the VNArduino project ?at https://hamprojects.wordpress.com/2016/02/21/hf-arduino-vna-english-version/ DuWayne KV4QB
Any one have any experience with the VNArduino project ?at https://hamprojects.wordpress.com/2016/02/21/hf-arduino-vna-english-version/ DuWayne KV4QB
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DuWayne Schmidlkofer
· #2722
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And Another Self Contained SNA
I have several posts on my blog about a self contained SNA-Jr that I built, similar to Tom's YANA.. They cover the very early design, and functionality I wanted to include in a small self contained un
I have several posts on my blog about a self contained SNA-Jr that I built, similar to Tom's YANA.. They cover the very early design, and functionality I wanted to include in a small self contained un
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DuWayne Schmidlkofer
· #2662
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ESP8266?
It depends on what ESP8266 board you use. There are several with different pins brought out. There is a new development board recently released that brings all the pins out along with built in USB TTL
It depends on what ESP8266 board you use. There are several with different pins brought out. There is a new development board recently released that brings all the pins out along with built in USB TTL
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DuWayne Schmidlkofer
· #2585
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Updated Arduino Software
You could look at the Sweeperino by Asher Farhan at http://hfsignals.blogspot.in/p/sweeperino.html Basic SNA using a si570 and Ad8307 power meter with 2 line display for stand alone use. He also has a
You could look at the Sweeperino by Asher Farhan at http://hfsignals.blogspot.in/p/sweeperino.html Basic SNA using a si570 and Ad8307 power meter with 2 line display for stand alone use. He also has a
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DuWayne Schmidlkofer
· #2463
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The Digital 49er and the Experiments Board
I have modified several of the inexpensive rotary encoders by removing the detent ball. There are several Youtube videos about this. Gives a much nicer feel. Also if you have room in your project ther
I have modified several of the inexpensive rotary encoders by removing the detent ball. There are several Youtube videos about this. Gives a much nicer feel. Also if you have room in your project ther
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DuWayne Schmidlkofer
· #2442
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The Digital 49er and the Experiments Board
Using a si5351 for the VFO in the 49er should work fine. I built a si5351 based VFO for a Frog Sounds transceiver, which is very similar to the 49er. I put provisions on the board I designed for an at
Using a si5351 for the VFO in the 49er should work fine. I built a si5351 based VFO for a Frog Sounds transceiver, which is very similar to the 49er. I put provisions on the board I designed for an at
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DuWayne Schmidlkofer
· #2429
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The Digital 49er and the Experiments Board
The 5351 is a square wave output, so will probably have issues with harmonics. One simple SNA using the si570 is the Sweeperino by Asher Farhan http://hfsignals.blogspot.in/p/sweeperino.html it can be
The 5351 is a square wave output, so will probably have issues with harmonics. One simple SNA using the si570 is the Sweeperino by Asher Farhan http://hfsignals.blogspot.in/p/sweeperino.html it can be
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DuWayne Schmidlkofer
· #2422
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Si5351
After reading recent posts in this thread it appears that there is a mix up of the capabilities of the SI5351 with the SI570/571 family of clock generators. The original SI5351 came in 3 types SI5351/
After reading recent posts in this thread it appears that there is a mix up of the capabilities of the SI5351 with the SI570/571 family of clock generators. The original SI5351 came in 3 types SI5351/
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DuWayne Schmidlkofer
· #2373
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Si5351
Another version of a SNA using a si570 is the Sweeperino by Ashar Farhan. Info is on his blog http://hfsignals.blogspot.in/p/sweeperino.html There are links to the Arduino sketch and a PC program for
Another version of a SNA using a si570 is the Sweeperino by Ashar Farhan. Info is on his blog http://hfsignals.blogspot.in/p/sweeperino.html There are links to the Arduino sketch and a PC program for
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DuWayne Schmidlkofer
· #2368
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Si5351
A simple replacement of the ad9850 by a si5351 would have problems because of the square wave output of the 5351. I tried using a 5351 in a simple antenna analyzer, and found that I was getting respon
A simple replacement of the ad9850 by a si5351 would have problems because of the square wave output of the 5351. I tried using a 5351 in a simple antenna analyzer, and found that I was getting respon
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DuWayne Schmidlkofer
· #2351
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Stand alone Power Meter
I just updated my blog post on the stand alone AD8307 power meter I built. I have provided a link to the Arduino sketch, Eagle board file. Also toner transfer image and board layout files. DuWayne's P
I just updated my blog post on the stand alone AD8307 power meter I built. I have provided a link to the Arduino sketch, Eagle board file. Also toner transfer image and board layout files. DuWayne's P
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DuWayne Schmidlkofer
· #2303
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Power meter accuracy?
I built a stand alone AD8307 power meter using a Nano. Since the max full scale output of the Ad8307 is 2.5 volts, instead of using an amplifier or different voltage reference I took the sum of two re
I built a stand alone AD8307 power meter using a Nano. Since the max full scale output of the Ad8307 is 2.5 volts, instead of using an amplifier or different voltage reference I took the sum of two re
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DuWayne Schmidlkofer
· #2236
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Header Pins for Experimenter Board
For most of the projects I build using a Nano, I use 40 pin low profile IC sockets cut down to 30 pins. Then I install the header pins on the nano with the longest pin side down through the top. This
For most of the projects I build using a Nano, I use 40 pin low profile IC sockets cut down to 30 pins. Then I install the header pins on the nano with the longest pin side down through the top. This
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DuWayne Schmidlkofer
· #2224
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Experimenter board pin confusion
I bought some of these from eBay. http://www.ebay.com/itm/10-Pcs-Gold-Plated-2-54mm-Male-40-Pin-Single-Row-Straight-Round-Pin-Header-Strip-/170842982053?hash=item27c70906a5:g:~IwAAOSw-vlVkQOq But for
I bought some of these from eBay. http://www.ebay.com/itm/10-Pcs-Gold-Plated-2-54mm-Male-40-Pin-Single-Row-Straight-Round-Pin-Header-Strip-/170842982053?hash=item27c70906a5:g:~IwAAOSw-vlVkQOq But for
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DuWayne Schmidlkofer
· #2158
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Experimenter Board build notes
For most of my projects that use the Arduino Nano I use 40 pin low profile IC sockets cut down to 30 pins. On the Nano I install the regular header pins down through the top of the board. This is give
For most of my projects that use the Arduino Nano I use 40 pin low profile IC sockets cut down to 30 pins. On the Nano I install the regular header pins down through the top of the board. This is give
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DuWayne Schmidlkofer
· #2139
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Extending frequency range question
You could use the existing PHSNA and bring out A4 A5 5v and ground to an external 5351 board. Then change the existing PHSNA code to control the 5351 and use the same graphing function. I have an extr
You could use the existing PHSNA and bring out A4 A5 5v and ground to an external 5351 board. Then change the existing PHSNA code to control the 5351 and use the same graphing function. I have an extr
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DuWayne Schmidlkofer
· #2051
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