Do you want to get started with scanning or brush up on basics in the new year?
In this episode, Phil goes through a rapid-fire rundown of trunking and trunked systems.
This is part 3 of this 2021 crash course.
What You Will Learn in This Week's Podcast:
- Antennas need to be matched, or resonant on the frequency or frequencies you need to monitor.
- The lower the frequency, the larger the wavelength, which requires a longer antenna. The higher the frequency, the shorter the wavelength, and thus the shorter the antenna.
- Some antennas can cover a wide bandwidth or even multiple bandwidths.
- A discone antenna works reasonably well across just about every frequency we might want to listen to, but there is no gain.
- Discone antennas are omnidirectional and vertically polarized.
- Yagi antennas are directional antennas with high gain over a small bandwidth, consisting of a boom, a reflector, and a driven element.
- After your antenna, you need good quality coax cable to deliver the frequencies your antenna is picking up into your radio.
- As your frequency increases, the amount of loss in coax cable also increases.
- The best way to combine multiple scanner to a single antenna is with an active multicoupler because it uses isolated ports.
- You can use filters if you have nearby interference that is preventing you from hearing what you want to listen to.
Are you looking for your first scanner radio?
Download our new e-guide, “5 Thinks You Need to Know Before Buying Your First Scanner”. This free PDF is about 30 pages long and has 5 things you should look for, plus a few extra bonus items to make sure you make an educated purchase.
Links and Sources from this session:
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