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- Why do hams often conclude messages with 73?
The usage of "73" for such a purpose comes from the Phillips Code, originally devised in the era of telegraphs to speed up transmission of common messages by mapping them to numbers "73" mapped to "best regards" or "my compliments" and was intended as a general valediction for transmitted messages It is still used for that purpose today in morse code transmissions and often makes its way
- jargon - CB v Amateur Radio - Amateur Radio Stack Exchange
I am learning about Amateur Radio so as I can go for my foundation licence but I was on CB back in the days, a channel nine monitor and used the 10 code and the Q code but all I can see is the 73
- digital modes - How do you log (or not) busted FT8 QSOs? - Amateur . . .
Since it is "technically" a complete QSO I log it (in DXKeeper) but don't upload to e-qsl or LotW unless the other party does If he does, I'll upload: if he doesn't I assume he has it as incomplete I think this saves a lot of time later, looking up the QSO details in the txt log! Some folks simply don't bother with "73" 73 Dave - K1DJE
- Antenna matching for a dipole - Amateur Radio Stack Exchange
I am following 50ohm matching until balun and after that 73 ohm everywhere Just looking at the two branches of your antenna: I'm not sure I'd say you're "violating" anything, but the model for a "simple" dipole is that the gap between the conductors is zero (or at least very small compared to wavelength)
- Hottest jargon Answers - Amateur Radio Stack Exchange
None of the above There are no "73 codes" like 10-codes, 73 is just 73 Yes, I know about the 92 code, but it's well and truly dead, with no survivors other than 73 and occasionally 88, so
- procedure - CW contact content - Amateur Radio Stack Exchange
In the end, we have 73, which is commonly used Then there's the procedural part I send SK, meaning that I'm ending the conversation and I send CL, meaning that I'm closing down my station The other side will provide a similar transmission Sometimes, at the very end, people will send E E and E after the final official relation
- Whats the difference between saying “CQ” or “QRZ” in a contest?
The best thing to do is to listen for a while, and notice which stations are being responded to Sometime operators will prematurely respond with their callsign, without waiting to hear if the other station has finished broadcasting It's about %80 timing and %20 luck! And, as always, good luck and 73!
- Balun and impedance matching suggestions for dipole antenna
I would expect this antenna will be around 73 ohms of inductance (more or less because I expect some coupling to the carbon fiber structure of the aircraft) So my question is, given that I'm feeding this with around 5 watts of power through 50 ohm RG-400 coax, I'm struggling with how to approach matching the inductance and adding a balun
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