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1. [TenTec] using OmniVI with Alpha 87A (score: 1): Author: Allan Taylor <k7gt.cw@gmail.com>; Date: Sun, 13 Dec 2009 11:28:15 -0800; Yet another question. The Alpha 87A amp does not have a QSK keying loop as do the TT amps. Is there a best way to key it from an OmniVI? Has anyone done this? I am thinking that the TX REQ signal fro; /archives//html/TenTec/2009-12/msg00113.html (6,840 bytes)
2. Re: [TenTec] using OmniVI with Alpha 87A (score: 1): Author: "Duane Calvin" <ac5aa1@gmail.com>; Date: Sun, 13 Dec 2009 15:38:39 -0600; Check the Alpha web site- they used to have a suggested keying circuit for the pin-diode switched 87A. My vacuum relay-switched 99 works great in the keying loop. 73, Duane Duane Calvin, AC5AA Austin; /archives//html/TenTec/2009-12/msg00120.html (8,056 bytes)
3. Re: [TenTec] using OmniVI with Alpha 87A (score: 1): Author: "Troy Wideman" <w6hv@verizon.net>; Date: Sun, 13 Dec 2009 15:19:00 -0800; Allan, The method I used for several years is the one shown by Alpha Power for the 87A. You can see it at: http://www.alpharadioproducts.com/tentec.asp 73, Troy, W6HV Yet another question. The Alpha; /archives//html/TenTec/2009-12/msg00121.html (8,101 bytes)
4. Re: [TenTec] using OmniVI with Alpha 87A (score: 1): Author: Dudley Hurry <jhurry@austin.rr.com>; Date: Sun, 13 Dec 2009 23:01:50 -0600; Allan, The Alpha 87A is even better, uses switching diodes, much faster than any relay, no noise, and will work QSK just fine, thank you very much.. Just Do not leave connected to your antennas when; /archives//html/TenTec/2009-12/msg00125.html (7,996 bytes)

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