Is the DX4 auto-tune like the 87A and PW1? Comparable in price? Legal in
USA?
73, Keith NM5G
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of PA3DUV
Sent: Thursday, February 23, 2006 3:01 PM
To: amps@contesting.com
Subject: Re: [Amps] 87A vs. IC-PW1
Dave,
I'd vote for the model with max Pout. After all that's where a HF power amp
is made for.
The 87 has a 3 dB advantage over the PW1. In that respect it might be a good
idea not to limit your choice to those 2 models.
My personal experience with the PW1 and the Emtron DX4 is:
PW1 advantages: see your list below
DX4 advantages:
Has NO complicated microprocessor controlled circuitry which can break down
Will load into a 1:3 VSWR The two GU84 tubes are cheap and virtually
indestructible Gives approx 8 dB advantage in power gain over PW1
During A/B tests on the air the DX4 won hands down.
I sold the PW1.
Cheers, Dick
PA3DUV
More info on the DX4: http://groups.yahoo.com/group/emtrondx15/
----- Original Message -----
From: "Dave Burr" <dtburr@speakeasy.net>
To: <amps@contesting.com>
Sent: Wednesday, February 22, 2006 6:19 PM
Subject: [Amps] 87A vs. IC-PW1
>I know this seems to be a weird question, but I have the subject amps that
>I can use with my '7800, and I think one of them needs to go because I can
>really only use one at a time. There are lots of contesters on this list
>with some serious experience, so I figured I might bounce this off of you.
>You might even disagree with my assessment:
>
> PW1 Advantages
>
> It has an antenna tuner (although what is the point of pumping a bunch of
> power into your crummy 4:1 VSWR system?)
> It has a built-in antenna switch
> It can be connected to two radios
> It can be remoted
> It is more or less "instant on"
>
> 87A Advantages
>
> It is prettier
> It is quieter (fan noise-wise)
> It puts out more power
> Nobody says "Click. I just turned on the Icom"
>
> I understand that lots of this is personal preference but I will take
> others' opinions willingly! (BTW, don't tell me to just by another
> tranceiver and keep both because I have already accomplished that - and
> that runs with a 91B that I love)
>
> 73 de Dave
> K9XK
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