[hpsdr] MUNIN III

[George Byrkit]

Dear Kjell,

I am interested in these boards, for sure!  Also the T/R switch, etc.  I'm itching to have something fine to put after either my TAPR Hermes, or one of my two Atlas bus systems (one is for sale?  With or Without the Hercules amp sold possibly separately?  See me off-list if anyone is interested in those.  Trying to raise money for an Orion-II board.

Next project, get Angelia, then Orion, working in KISS Konsole.  I've had an Apache Labs 100-D for a while, but I've been dragging my feet and engaged in other projects either related to work (software developer, semi-retired, not retiring), dogs (our Belgian Tervuren www.byrkitzoo.com, amateur radio (K9TRV) or other matters relating to TAPR, Open Hardware, Open Software, the Digital Communications Conference (and thus having more fine AUDIO gear than anyone.  Anyone who can match a 20,000 W PA?)

Real problem: there are only 24 hours in a day, and I need about 10 of them for sleep!

73,
George Byrkit,
K9TRV

-----Original Message-----
From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Kjell Karlsen
Sent: Monday, August 14, 2017 3:12 PM
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] MUNIN III

***** High Performance Software Defined Radio Discussion List *****

Hi All.

I have done a new layout of Munin II removing all the components ahead of  
the gate transformer for the PA transistors. I have ordered some prototype  
PCB´and when I get them I´ll build one or two prototypes and test them. If  
the results are as good as the preliminary tests I have done, I´ll publish  
the schematics and Gerber files so that if someone want to collect a list  
and order PCB´s, it is fine. I have no intension to do it myself.

I have also ordered some prototype PCB´s for a 100W T/R switch. It is not  
using any high voltage DC inverter for blocking during TX but just rectify  
the HF and use it. I have tested it on 150W and I believe that by just  
increasing the size of some of the inductors, it can be used up to 500W.  
But that has to be tested.

There is also an input for Pure Signal on the T/R Switch.

So if someone is interested, I am going to have some spare PCB´s to send  
them.I have uploaded the schematics to Google Drive.

https://drive.google.com/open?id=0B24WScJ3UyUvWXBkT3A5M3NOM0U
https://drive.google.com/open?id=0B24WScJ3UyUvWXkxOHQzWGlLNTQ

73, Kjell

-- 
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