[amsat-bb] Ettus B210

Edward R Cole kl7uw at acsalaska.net
Tue Jan 26 22:16:16 UTC 2016

Initially, I was concerned that they would be class-C amps but do 
show saturation level so perhaps they are biased for linear.  Input 
requirement is +13 dBm (20mw) which should not be a problem with many 

I just installed a mmic amp to drive a S-AV36.  MAV11 is +15 dBm 
(31mw) for 5mw drive.
Still testing so will know soon if 31mw is adequate drive for full 
output.  Most of the RF modules perform better than spec indicates 
(take less drive).

At $480 I can see I am charging too little for the 2M80 amp 
($369).  RFBay Inc. appears to be addressing the commercial market vs 
ham radio.

If one is adverse to building their own this might be a solution. 20w 
is certainly adequate for satellite work if decent antennas are 
used.  My DEMI L432-28 outputs 25w but that will be reduced by time 
it reaches the antenna.  On 2m my KX3-2M outputs 2.5w which will 
drive a 25w linear or a 60w class-C amp (for FM).

I think I would follow up building the W6PQL boards, if I had the 
skill, tools, and determination.

73, Ed - KL7UW

From: Juan Jose Sanchez Denis <jsdenis at gmail.com>
To: amsat-bb at amsat.org
Subject: Re: [amsat-bb] Ettus B210
Message-ID: <1453759810.7928.2.camel at jj-laptop>
Content-Type: text/plain; charset="UTF-8"

What do you think about these amps?


The HPA-155 and HPA 480

73 de Juan EB2FVT

73, Ed - KL7UW
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com

More information about the AMSAT-BB mailing list