[Amps] Price per Watt Conversation

[David Gow]

The manual also states that the higher end of the 200-240 range is preferred
because it helps to overcome line losses.

Dave W7VM

-----Original Message-----
From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Richard Solomon
Sent: Tuesday, April 25, 2017 9:44 AM
To: Amplifiers
Subject: Re: [Amps] Price per Watt Conversation

The 220 vac number comes from the
power output spec that says 1,000
Watts out @ 220 vac. But the manual
clearly states 100 - 240 vac input.

73, Dick, W1KSZ

On Tue, Apr 25, 2017 at 9:16 AM, Doug Renwick <ve5ra at sasktel.net> wrote:

> Roger,
> The specifications for my Yaesu VP-1000 (Quadra) power supply state 
> the input voltage is AC 100-240 V~, 50-60 Hz. This is different from 
> the 220 V you mention. I can scan the spec sheet for further proof if 
> you are still a doubter.
>
> Doug
>
> "Political correctness is a weapon used to silence people who tell the 
> truth" - Ayaan Hirsi Ali
>
> -----Original Message-----
>
> Efficiency is not high on my priority list "as long as the heat 
> generated is easy to manage" and ceased to be a concern when the legal 
> limit went to output instead of input..  OTOH predistortion, or 
> Adaptive predistortion would appear to allow both efficiency and quality.
>
> At close to 200W per device, it would require 8 devices in a circuit 
> much like the Yaesu Quadra, but with a legal limit out for less money.
> BTW I saw several posts praising the Quadra, but the Quadra has 
> several inherent problems in the basic design according to the Yaesu 
> news groups..  One is the PS is designed for 220 VAC and not the 
> current standard of 240 leading to a number of failures. Another is 
> the way the power supplies feed the individual amps. OTOH it is a nice 
> amp and I do see a number of hams claiming to be running 1200W out for 
> many years.  I have two.
>
> 73, Roger (K8RI)
>
>
>
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