Friday, 31st May 2019
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K3 AGC – The Clifton Laboratories Paper
By admin   Posted in Transceivers  Posted on March 25, 2017March 25, 2017
Clifton Laboratories was acquired by DX Engineering. The Clifton Laboratories website is now redirecting to DX Engineering, and the Clifton Lab references and papers are unavailable. However, It *is* possible to get at the old Clifton Laboratories Documents via the Internet Archive’s wayback machine. The original K3 AGC paper from 2009 is available on the …
Grounding is Important – Really
By admin   Posted in Antennas  Posted on March 23, 2017March 23, 2017
Mike, K7IR, President of SteppIR Antennas, showed me a printed circuit board from an antenna controller that a customer had sent returned.  They didn’t get a direct lightning hit, but after a small storm nearby, their antenna wasn’t working any longer. Check out the destruction of the driver chips. It’s prudent to make sure you …
DB36 Prototype
By admin   Posted in Yagi  Posted on April 9, 2008March 23, 2017
The DB-36 Prototype I’ve been fortunate to be able to work with Mike, Jim, and Clay on the new Steppir “Dream Beam 36” antenna.  You may have seen hints in the pictures of one of the initial prototypes on W7CE’s (Clay) web site. These folks are DEDICATED to producing a great product.  I’ve been helping …
Alpha 87a Fault 1 / Downlevel modification
By admin   Posted in Amplifiers  Posted on February 9, 2008March 23, 2017
Alpha 87A Amplifier Fault 1  & the ‘downlevel amplifier’ I purchased a used Alpha 87A amplifier from a local ham in April of 2007, and enjoyed using it for a number of months. One evening in October 2007, while trying to work some 160 meter DX, the amplifier faulted on keydown, turning itself off. Upon …
2008 CQ160 Contest – W7SNH
By admin   Posted in Contests  Posted on January 27, 2008March 24, 2017
Denny W7SNH came over to do the CQ160 CW Contest — his first contest using computer logging. We decided to use his call for the operation. Conditions on the first night (Friday) were excellent from here — it’s not normal (as near as I can tell, having only done the top band thing for four years …
Ameritron AL-1200 to GS35b Conversion
By admin   Posted in Amplifiers  Posted on July 1, 2007March 23, 2017
Ameritron AL-1200 to GS35B Conversion The Ameritron AL-1200 Amplifier is in current production. In its factory configuration it uses a single 3CX1200A7 (triode)  tube, grounded grid configuration. Some of the nice features of this amplifier include; Peter Dahl transformer Pi-L output circuit Full 160m-10m coverage Large chassis with accessible components Some of the ‘Russian tubes’ …
Work that DXpedition on 160 Meters with a Temporary Vertical
By admin   Posted in Antennas  Posted on April 6, 2007March 24, 2017
Work that DXpedition on 160m N8S (Swain’s island) i