[TenTec] Correction: Power input: 580 Delta transceiver

Sun, 12 May 2002 16:02:46 -0400

It may be strange, but rating ham transceivers in terms of input power continued
throughout much of the 80s decade. The back cover of my 1988 Radio Amateur
Callbook is an advertisement for the Kenwood TS440S which states "RF input power
is rated at 200 W PEP on SSB, 200 W DC on CW ......" No where in the
advertisement is the power expressed in terms of output.

In the same callbook, Yaesu used output power in their FT-757\GX/II
advertisement. I guess things were starting to change by then.

73 - Don Jones N4TN

Adam Farson wrote:

> Strange that any manufacturer should specify DC input, rather than RF
> output, as late as the 80's....
>
> When I was working professionally as an RF designer in the 1960's in the
> military and commercial radio comms field, our radio regulatory agency
> specified RF output for type-approval purposes. We had Bird 43 power meters
> traceable to our national standards bureau. Even in the Amateur Service, the
> SSB power limit back then was stated as 400W PEP output (as opposed to 100W
> DC input to the RF PA for all other modes).
>
> Best 73,
> Adam, VA7OJ/AB4OJ
> North Vancouver, BC, Canada
> http://www.qsl.net/ab4oj/
> Note new e-mail address:
> mailto:[email protected]
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Sam Timberlake KF4TXQ
> Sent: Sunday, May 12, 2002 11:38
> To: [email protected]
> Subject: [TenTec] Correction: Power input: 580 Delta tranceiver
>
> I appreciate Mike's observation re: 200W DC input on the Delta.
> Mike is indeed correct. My apology to the list.
>
> tnx es 73,  Sam KF4TXQ
>
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