Archive for the ‘Uncategorized’ Category

B&W Antenna Switch Repair

Some time in the past, I have picked up several of the B&W Antenna Switches at a hamfest. They were purchased at a good price, just $10 each, and appear to be of pretty good quality. I got two 6-position switches (B&W Model 595), and two 3-position switches (B&W Model 593). Last month, I decided […]

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Kenwood SW-2000 Wattmeter Lamp Replacement

I’ve been busy lately rewiring my hamshack. In the process, I have been doing some minor repairs to equipment that has deteriorated over the years. My Station Wattmeter, a Kenwood SW-2000 that I bought new in 1983, had long ago burned out its incandescent bulbs for the meters. So it is time to replace them […]

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Tektronix 2465A Oscilloscope Repair – Part 4

CRT Screen Adjustments After the initial Low Voltage Power Supply adjustments, the next step is to run through the CRT screen adjustments.  I was thrown off here at first by the order that the adjustments show up in the manual. The manual starts off the Adjustments section with an Introduction, followed by a Power Supply […]

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Hex Beam Installation

After giving up on my 35 year old Cushcraft A4, I ordered a Hex Beam from NA4RR.

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8640Jr Band 2 Lowpass Filter

After the first two filters of the original 8640Jr design had been built, I headed off in my own direction to add another two filters for lower bands. I miscalculated, and designed the filters to cutoff just after the third harmonic of the lowest frequencies, rather than the second, which would have placed it near […]

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