Topband: Preamplifiers

[donovanf at starpower.net]

Hi Andy , 

I use preamps from three different manufacturers in my station : 

- DX Engineering RPA-1 $143.95 
- Clifton Labs Z10043 (or Z10042) Norton Preamp $100.00 (with enclosure) 
- Advanced Receiver Research P1-30/20VD $69.95 

I use W3LPL bandpass filters in front of every preamp because 
of the extreme out-of-band signal levels in my multi-multi station. 

All three types of preamps perform very well, I've detected no 
practical difference in performance among the three types of preamps 
used on my Beverages and 8-circle receiving arrays. 

The Clifton Labs Norton preamp is clearly superior on 15 and 10 
meters because it appears to be unconditionally stable. The same is 
not true of the ARR preamps which self-oscillate on 15 and 10 meters 
when fed through a band pass filter. I've never observed the self- 
oscillation problem with ARR preamps on 160 through 20 meters. 

73 
Frank 
W3LPL 



----- Original Message -----

From: "Mike Waters" <mikewate at gmail.com> 
To: "Andy YO3JR" <andyrusse at gmail.com> 
Cc: "topband" <topband at contesting.com> 
Sent: Monday, February 2, 2015 9:17:32 PM 
Subject: Re: Topband: Preamplifiers 

This is what I use: 
www.w0btu.com/W0BTU-broadband-preamps.html 

73, Mike 
www.w0btu.com 

On Mon, Feb 2, 2015 at 3:08 PM, Andy YO3JR <andyrusse at gmail.com> wrote: 

> 
> Can someone recommend me a good preamplifier for the beverage antennas on 
> 80/160m? 
> 
> I found on the market a few like Z10043 Norton Amplifier, KD9SV dual band 
> preamp, RPA-1 from DX Engineering. 
> 
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