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Wb8icn’s Blog

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Last Build Date: Fri, 08 Dec 2017 15:01:10 +0000


8640-jr Finalwb8icnVFO PCBT1 Output

Thu, 02 Apr 2015 14:08:50 +0000

Well, I had it wrong…the pin-outs were as the datasheets showed. But I had to actually draw a picture of the device (both top and bottom view) to convince myself of what I was seeing. Long story short, it works as it should and I am happy with the results. Here is a pic of […](image)

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8640-jr Update #1wb8icn

Mon, 30 Mar 2015 00:52:09 +0000

Well, I ran into a road block this afternoon that took some time to sort out. I built the FET VFO and Follower (for isolation) portions of the VFO…but could not get it to oscillate. After checking wiring and voltages, I pulled another 2N4416A from the junk box and checked it with my M-Cubed semiconductor […](image)

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8640-jr VFOwb8icn

Sun, 29 Mar 2015 02:44:56 +0000

Started assembling a 8640-jr VFO tonight. Should have done this a month ago but been rather busy with no-related bench stuff lately. Built and tested the +6 volt strip and now onto the oscillator and buffer stages. Located and sorted the parts for the entire project…now just need to build it, then test and measure […](image)

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Update on CW Decoderwb8icn

Sun, 25 Jan 2015 02:03:58 +0000

Received the 4×20 (4 lines, 20 characters per line) LCDs. This made using the CW Decoder so much more enjoyable to use. I changed the code a bit to put the WPM rate and my call sign on the first line and then three lines of cw. I need to take a picture of the […](image)

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Arduino Stuffwb8icnCW Decoder-5BB-2

Tue, 20 Jan 2015 01:01:00 +0000

Been doing some Arduino stuff on the workbench. I saw an article that used an Arduino for a CW Decoder. Built it but it didn’t show anything on the LCD. After some checking, realized that the schematic I was using and the software I had loaded onto the Aruduino didn’t match as far as LCD […](image)

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KX1 Upgradeswb8icn

Thu, 04 Dec 2014 02:52:09 +0000

I have been adding to my Elecraft KX1 rig. Added the 30 meter mod and as of tonight, have built and installed the ATU mod. I plan on using the KX1 while we are in the RV and having the ATU is a definite plus with a non-resonant antenna. I received the Ten Tec Rebel […](image)

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2014 Fall Update…wb8icn

Sat, 01 Nov 2014 01:19:53 +0000

Well, we had our first flakes of white stuff today, so guess summer is actually over. I spent most of the summer hiking and walking the many trails around our home town, but doubt I will be doing a lot of that for the next few months. The wifey has told me that we are […](image)

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QRPHB Fileswb8icnaa-qrp

Mon, 06 Oct 2014 22:01:01 +0000

For those interested in getting a copy of Todd’s web site current as Oct  5th, go the the following address and download the 35MB pdf file, ….PLEASE DON’T POST THE URL IN PLAIN TEXT….(image)

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QRPHB Web Site Developmentwb8icn

Sun, 05 Oct 2014 23:53:22 +0000

Todd, VE7BPO, who runs the “Pop Korn” site for homebrewers may have to discontinue the QRPHB web site ( all together. He and the web master have been having bandwidth problems and it looks like the issues may continue for the foreseeable future. Throughput has been really bad the last few days, and today the […](image)

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Short Update…wb8icn

Thu, 03 Jul 2014 02:41:31 +0000

Wanted to mention what I found by comparing the molded inductor verse the use of a toroid for the RF Phase Shift. Found that the molded inductor (molded inductor for the primary and four turns of hook-up wire for the secondary) has at least a 10 dBm loss at 7 MHz. I wound a toroid […](image)

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