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01-27-2006, 03:31 AM
This is a review of the Palstar Model CW50A Keyer ($119.95) Palstar CW50A (http://www.palstar.com/cw50a.php)

I received this keyer free of charge in March 2004 as an upgraded replacement for one of their older CW50 models that I was having some trouble with. It was a brand new model at the time, not even advertised on their website yet. I might even have received the very first one made for all I know. I am pleased that Paul Hrivnak, N8PH, went out of his way to back up Palstar's products.

The case is about 7" x 5" x 1.5" and has the same styling, which personally I find attractive, as their earlier CW50 keyer. It’s solidly built – I have no qualms about just tossing this thing into a bag to take with me for portable operations.

Front panel controls are Power On/Off, Tune, Speed, Volume and Pitch. The paddle input jack is on the front, also (personally, I’d prefer it on the rear … but it’s not a big issue). Rear panel has a separate jack for a straight-key, adjustments for Spacing and Weight, a power jack, and switches for selecting Iambic A/B, Normal or Bug Mode, and Normal or Autospace modes. There are three RCA-type jacks for keyed outputs, Cathode (+), Grid Block (-) and Radio Mute for use with a separate receiver. There's a small speaker grill on top.

Four cables were supplied, two with RCA jacks, one with mono phone plug and one stereo phone plug. Power requirements are either 12 VDC from a 2.1mm plug, a supplied adapter included, or it can be powered by an internal 9V battery.

Operated without the audio sidetone, current draw is supposed to only be 1.5mA, but I found that battery life seemed much shorter than I expected – only a couple weeks even with the unit turned on at most an hour or two a day. You have to take the cover off to change batteries.

I was pleased with how nice the audio sidetone sounds - clean with no clicks or chirps as I’ve heard on a couple of other keyers in this price range.

There is a radio mute relay. Not sure why I’d ever use it. Seems like an anachronism to me, but if you do happen to use a separate transmitter/reciever combination this keyer is set up for that. They relay click is rather annoying though. When I get around to it I’m going to figure if out if I can disable this relay.

Functioning is basically the same as any other non-memory keyer. The weight and space adjustments provide just enough variability to give your keying a unique sound. The Bug mode is nice feature allowing another way to add a somewhat different personal touch to your keying. You can plug in both a straight key and a paddle at the same time, and use either, which is a nice convenience.

Having the On/Off switch, even though not really necessary and some other keyers don’t have them, is a good idea in my opinion. When I leave the shack for moment it is easy to turn off the keyer to eliminate any risk of being an inadvertent "ditter" due to cats or grandkids in the shack.

WA2ZDY
02-11-2006, 06:45 PM
I built an AccuKeyer from the 1976 ARRL Handbook. It ran on a 9v battery and the sidetone from a single AA battery. I used the sidetone in the early days and needed to change the AA every few months. The 9v? Lasted for ten years each. I used exactly three in the 30 years I had that keyer.

Shame the thing finally died. I miss it.