[hpsdr] Hermes card v Anan-10 and Anan-100 questions please.

[Joe Martin K5SO]

Hi Chris, 

Yes, of course you can.  Here I use a Hermes board to drive an external (albeit 12V) 100W PA module from a Drake TR-7 which in turn drives an Ameritron AL-1200 (220VAC) linear amp to 1.5 KW.  Hermes doesn't care, it all works fine together. 

To answer your question: 

> What are the differences between the Anan-10 and Anan-100
> transceivers, and the Hermes board, power amplifier section aside, and
> are there any things I need to be aware of please? 

There is no difference, power amplifier sections aside, between Hermes and the ANAN-10 and ANAN-100.  The ANAN-10 and ANAN-100 both use a Hermes board and they simply connect the amplifier/filter sections to the Hermes board.  

One item to watch for is that if you use one of the open drain outputs on Hermes to enable your PA be sure that you don't exceed the open voltage limit on the Hermes open drain device.  

Also keep in mind that, if you wish to use an Alex filter set, the directional coupler on the Tx Alex board is designed for a nominal 100W rf level, not 200W.  

But don't confuse the ANAN-100 with the ANAN-100D which uses an Angelia board instead of a Hermes board.  They are quite different as Angelia uses dual coherent ADCs for dual Rx.  

73,  Joe K5SO

On Jan 5, 2013, at 4:13 AM, Chris Wilson wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> 
> 
>  05/01/2013 11:09
> 
> If I wanted to use a 50 volt PA for better IMD than a 12 volt FET PA
> can give, could I buy a Hermes card and use it with a separate PA
> section, either home brew or commercial, running off a 50 volt supply?
> What are the differences between the Anan-10 and Anan-100
> transceivers, and the Hermes board, power amplifier section aside, and
> are there any things I need to be aware of please? I would like a
> minimum of 200 watts from an add on PA stage.
> 
> -- 
>       Best Regards,
>                   Chris Wilson.
> mailto: chris at chriswilson.tv
> 
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