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Update for 28-01-22 16:45

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Tyler Perkins 2022-01-28 16:45:01 -05:00
parent d8d0585146
commit 3fe457acfb
5 changed files with 27 additions and 11 deletions
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Ideas.md.gpg
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tech/Antenna.wiki
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@ -72,6 +72,10 @@ Example: what is the power change from 5W to 10W, in dB?
10 log (10 / 5) = 10 (0.3010) = 3dB 10 log (10 / 5) = 10 (0.3010) = 3dB
*dBi* means gain with respect to an isotropic antenna.
*dBd* means gain with respect to a dipole antenna
== Antenna Types == == Antenna Types ==
=== Dipole === === Dipole ===

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tech/EME.wiki Normal file
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@ -0,0 +1,5 @@
= EME =
Earth-moon-earth or EME is a type of propigation where signals are bounced off
of the moon and sent back to earth, in order to increase the range of VHF and
UHF communications.

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tech/Ham.wiki
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@ -45,6 +45,7 @@ see [[electronics]]
[[Propagation]] [[Propagation]]
[[Antenna]] [[Antenna]]
[[SWR]] [[SWR]]
[[EME]]
== [[Modulation]] == == [[Modulation]] ==

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tech/Q_codes.wiki
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@ -3,15 +3,21 @@
Q codes are shorthands for common phrases in radio communication. Below is a Q codes are shorthands for common phrases in radio communication. Below is a
table of Q codes that I need to memorize. table of Q codes that I need to memorize.
| Code | Meaning | | Code | Meaning |
| CQ | Looking for contact | | CQ | Looking for contact |
| QRRR | Distress signal | | QRRR | Distress signal |
| QSO | Make contact | | QSO | Make contact |
| QRL | Is this freq busy? | | QRL | Is this freq busy? |
| QRO | Increase power (?) | | QRO | Increase power (?) |
| QRP | Decrease power (?) | | QRP | Decrease power (?) |
| QRZ | Who is calling? | | QRZ | Who is calling? |
| QST | Calling all Amatuers | | QST | Calling all Amatuers |
| | |
| | |
Terms
------
| Code | Meaning |
| QRM | Human made interference |
| QRN | Atmospheric noise |
| QSB | Signal fading (variation is strength over time) |