Differences

This shows you the differences between two versions of the page.

--- links:simplex [2026/07/23 21:03] – [Coordination] va7fi
+++ links:simplex [2026/07/27 16:24] (current) – [Coordination] va7fi
@@ Line 1: / Line 1: @@
+~~NOTOC~~
+===== Simplex =====
+==== FM ====
+On VHF and UHF, not all frequencies are available for use on simplex.  The RAC band plans specifies these channels for simplex use:
+|< 100% 13% 55% 32% >|
+^[[https://wp.rac.ca/144-mhz-2m-page/ |For 2m:]] |146.415, 146.430, 146.445, 146.460, 146.475, 146.490, 146.505, <wrap hi>146.520</wrap><sup>†</sup>, 146.535, 146.550, 146.565, 146.580, 146.595  |15 kHz between each channel. |
+^ ::: |147.420, 147.450, 147.480, 147.510, 147.540, 147.570 |30 kHz between each channel. |
+^[[https://wp.rac.ca/432-mhz-70-cm-page/ |For 70cm:]]  |<wrap hi>446.000</wrap><sup>†</sup>, 446.025, 446.050, 446.075, 446.100, 446.125, 446.150, 446.175  |25 kHz between each channel.  |
+<WRAP right align>†: <wrap hi>National calling frequencies.</wrap></WRAP>
+Or more succinctly:
+^  2m    |  146.415 -- 146.595  |  Δ = 15 kHz  |
+^ :::    |  147.420 -- 147.570  |  Δ = 30 kHz  |
+^  70cm  |  446.000 -- 446.175  |  Δ = 25 kHz  |
+==== Digital ====
+Note that on 2m, there are digital channels interwoven between some of the FM channels:
+|< 100% 13% 55% 32% >|
+^ 2m digital |147.435, 147.465, 147.495, 147.525, 147.555, 147.585 |30 kHz between each channel. |
+===== Coordination =====
+These simplex frequencies are most often used for direct communication.  However, they can also be used to link a radio to another piece of equipment ([[/links/xband |crossband]], hotspot, etc).
+Here are some simplex frequencies used by local hams on the Sunshine Coast.
+^Frequency ^Callsign ^Usage |
+|446.100 |VA7FI |[[/links/xband#one_way_variation |Crossband]] |