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write your own review of the Mizuho PL-7S.
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K7VO
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Rating: 5/5
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Oct 28, 2005 22:08
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Great companion for the MX-7S 40m HT. Recommended.
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Time owned: more than 12 months
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The PL-7S is a small monoband brick amplifier made to match the Mizuho MX-7S 40 meter 2W SSB/CW handheld transceiver. The amp runs on 12V DC and provides the 9V DC necessary for powering the HT, so it eliminates the need for Mizuho's little 9V power supply or DC-DC converter. The power switch has three positions: HIGH (amplifier on), OFF (powered down), or THRU (no amplification, but power provided to the HT). The input is a pigtail on the front of the unit with a BNC connector on the end that attaches directly to the antenna connector on the HT. Output is a standard SO-239 connector on the back.
Let's face it, on 40 sometimes 2W is just not going to cut it. Going up to 10W is often enough to make the difference. The PL-7S I own now is combined with an MX-7S in a PR-3S system mount, making a very neat little mobile/portable/base 40m QRP station that works well. The PL-7S is very small, quiet, and a pleasure to operate. Mine delivers a true 10W with 2W input. This is the second PL-7S I've owned and both worked as expected.
These amps are fairly rare but they turn up once in a while on the used market at a decent price. If you see one and have an MX-7S, it makes a nice addition to the shack.
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