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| Reviews Summary for Bird Model 74 Coaxwitch |
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Reviews: 3
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Average rating: 5.0/5
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MSRP: $$500.00
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Description: Bird's Coaxwitch® Coaxial Selector Switches employ a unique, rugged and reliable design which permits positive contact, low insertion VSWR and negligible cross talk between channels. The switching mechanism is 4 1/2" of RG-87/U Teflon cable which is pulled away from the mating Male N connectors and rotated to the desired switch position
Frequency VSWR Loss (dB) Max RF Power Rating (Watts)
100 MHz - 0.02 850W
1 GHz 1.06 0.09 200W
4 GHz 1.3 0.22 75w
Ambient Temperature: -60°C to +65°C (-76°F to +149°F)
Attenuation to: Unused Channel: 75 dB (cross talk)
Coaxial Circuits: 2
Frequency Range: DC to 10 GHz
Maximum RF Voltage: 500 Volts RMS
Positions: 2
Weight: Approx. 2 1/2 lbs. (1.1 kg)
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write your own review of the Bird Model 74 Coaxwitch.
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VE7AGW
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Rating: 5/5
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Oct 6, 2007 18:14
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High Power DPDT
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Time owned: 3 to 6 months
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Found mine on eBay by chance as I was looking for a DPDT wafer switch that could handle 1.5KW. Upon delivery I was very impressed by it's ruggedness. It's a very simple DPDT coax switch and it was the perfect answer for my situation. I would love to find more of them but have since found that they are fairly rare. Having the Bird name on it sure gives the impression it is well made and it lives up to this reputation very easily.
If you ever find one grab it as they are rare and you will surely get your money back with a good profit. Better yet they are the best coax switch I've ever seen. Not at all like most of the amateur junk on the market today. This switch bears the quality we had many years ago.
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K1XV
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Rating: 5/5
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Feb 16, 2007 14:28
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Total isolation
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Time owned: more than 12 months
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I have picked up mine from a variety of sources. I even have a 10 position one. Its the only 10 position Bird 74 I have ever seen.
It is a very basic design. The "switch" is nothing other than a heavy duty housing with a piece of high quality, very flexible coax that is common to the source on one end, and is connected to an N connector center pin on the other end. As you switch from position to position, all you are doing is moving the center pin from one N connector shell to another.
If you use PL-259 connectors on your coax, you will have to get a number of N adopters.
In my station I use two. One to connect any of four transceivers to my amplifier, and the other to connect the amplifier and other transceivers and receivers to the antenna system.
These things new, I understand, are now four or five times what they typically sell on eBay.
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W3HD
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Rating: 5/5
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Feb 16, 2007 01:50
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EXCELLENT QUALITY
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Time owned: more than 12 months
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This high quality switch was purchased because of my less than diserable experiences using rotary mechnical switches (burnt contacts) PAID $104.00 ON EBAY, This is the only way to go, no more of that Ham Radio Junk Switches for me!
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