I've purchased a couple hundred toroidal ferrite cores (Mix #31, #43 and "Big 31" snap-ons) in the past 8 months with best prices from Mouser & Arrow Electronics. They arrive here in Maryland a coupl
I meant to post my message to Mike (below) on this reflector also. Mike, I don't know what you mean: "parallel to my primary antenna switch". I assume you mean an A/B switch to test the stub (??) Any
MIKE!! Just to verify, you are putting a 1/4 wavelength 20m Shorted stub and a 1/4 wavelength 10m Shorted stub in parallel with the coax line at your transmitter while you are transmitting on 40 m, c
OK, Mike, Moving forward: Yes, your 40m 1/4 WL shorted stub on your 40m transmitter should attenuate the 20m transmitted signal. UNLESS, you are not receiving the harmonic from the antenna you are tr
Mike, quick comment on harmonic "tone". I have heard many hundreds of times my CW harmonics on my receivers. The tone is often buzzy, raspy, and/or otherwise distorted. Sometimes it's pure. If I were
My SO2R station: I have individual/separate coax home runs from each antenna back to the antenna panel in my shack. My 6-Pak is in the shack. I have six, individual W2VJN-designed-and-built stub filt
Hi Mike, I can think of a least one scenario, Mike, that meets all of the symptoms you've been describing...read below. My assumption, therefore is: You are measuring your interstation interference b
With all of the discussion we've had about Stub Filters, I decided to finish my report on my experience implementing a stub filter system for my SO2R station. My report includes project implementatio
The explanations of what CC# & CS# are is contained on the Top Ten Devices webpage I referred to in my footnote #5: www (dot) qth.com/topten/Stubs (dot) htm The length and type of each stub is explai
Well said, Mark! I'm in total agreement, though I am an "assisted guy", having been so since we "single ops" were printing out packet cluster spots on an ASR-33 teletype machine in the early 80s and
I always point out to people who ask me about "amateur" radio; The "amateur" connotation refers only to the fact that we may accept no remuneration for the activities we perform under our FCC license
I totally agree with Mark, KD4D and I am a SOA operator and I want to keep the SO & SOA categories separate. Why would anyone care to combine them after the nearly 30 years we've managed to keep them
CQ CQ TEST de WN4AFP WN4AFP K will work just fine. Also, TEST de WN4AFP WN4AFP K will work, too. OR CQ CQ de WN4AFP WN4AFP K is good too. GL & 73, de Bill N3RR I'll be playing in the WPX probably SOS