[hpsdr] predistortion

[Isaac Weksler]

Hi, Helmut,

I wanted to look at the LDMOS amp info you've posted at HamSDR but it's not there - it produces the 404 error. Where can I get it?

73
Isaac 4Z1AO

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Helmut, DC6NY
Sent: Thursday, May 09, 2013 12:02 AM
To: n1jez at burlingtontelecom.net; hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] predistortion

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

Hi Lyle, Mike, Pete ...

many thanks for your interest. I uploaded some additional information about the LDMOS amp project at http://hamsdr.com/dnld.aspx. Please note this is a prototype and a lot of other designs can be used together with Warren's fantastic software. It's only an example what is possible. Nevertheless we will proceed in this theme.
Mike, you are right, a delay function is implemented in the software to compensate specific group delay behavior.

73, Helmut, DC6NY


-----Ursprüngliche Nachricht-----
Von: hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von Mike Seguin
Gesendet: Mittwoch, 8. Mai 2013 21:12
An: hpsdr at lists.openhpsdr.org
Betreff: Re: [hpsdr] predistortion

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

Hi Helmut,

I'd be very interested in the amp as well. I'm working on a 6M LDMOS kW amp using the NXP BLF-178P. It's running at an easy kW, but I'm not totally happy with the harmonic levels yet.

I do have kW LDMOS amps running on 2M (NXP) and 222 (Freescale). Those would be fun to test as well, but that would involve transverters and as I understand Warren's comments from Teamspeak, there is additional delay involved and would require additional work.

Mike

---
73,
Mike, N1JEZ
"A closed mouth gathers no feet"

On Wed, 08 May 2013 09:04:54 -0700, Lyle Johnson wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hallo Helmut!
>
> I think it is safe to say many of us are very interested in this.
> Please post to hamsdr.
>
> 73,
>
> Lyle KK7P
>
>> If people are interested I’ll try to put details of the amp on 
>> hamsdr.com.
>>
>> 73, Helmut, DC6NY
>>
>
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