Key simplex frequencies
146.5202 m national calling
446.00070 cm national calling
1–3miles, handheld to handheld
0towers needed
Call on the calling frequency, then move to another simplex channel to keep talking.
A family simplex plan
- Pick a main channelFor example 146.550
- Pick a backupFor example 146.580, in case the main is busy
- Save both in memoryName them FAM1 and FAM2
- Practice monthlyTest from home, the truck and the ranch
Why it matters
Repeaters can lose power in a storm. Simplex works as long as your batteries do.
How far simplex reaches
| Setup | Typical range |
|---|---|
| Handheld to handheld, in town | 1 to 3 miles |
| Handheld from a hilltop | 5 to 15 miles |
| Truck radio to truck radio | 10 to 20 miles |
| Base antenna to base antenna | 20 to 40 miles |
Estimates for open terrain; hills and trees cut range sharply.
Sources: ARRL band plan; typical VHF line-of-sight estimates
Remember
Every family plan needs a simplex channel that works with no tower at all.
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Answer key
- What does simplex mean?Talking radio to radio on one frequencySimplex is direct, same-frequency communication.
- What is the 2-meter national simplex calling frequency?146.520146.520 MHz is the 2 m calling frequency.
- After making contact on a calling frequency you should:Move to another simplex frequencyKeep the calling frequency clear for others.
- Why does a family need a simplex plan?Repeaters can fail in a stormSimplex works without towers or grid power.
- About how far do two handhelds reach in town?1 to 3 milesHandheld to handheld usually covers a few miles.