[hpsdr] New HPSDR card for VHF/UHF ?

[Maximo EA1DDO_HK1DX]

Hi,

I am not sure if I understand you guys but what I think is a DDC in VHF/UHF.
I am not talking about a HF SDR with analogic downconverters (as GNURadio).

Now some hams are using HF SDR with analogic downconverters, for example 144/28. What I said is to go VHF directly with DDC, NO analogic downconverter used.

73, Maximo - EA1DDO

                                               




From: ct1izu at sapo.pt
To: hpsdr at openhpsdr.org
Date: Sun, 5 Sep 2010 22:27:30 +0100
Subject: Re: [hpsdr] New HPSDR card for VHF/UHF ?

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

Getting a front end to deal with EU contest levels on 144/432 can be quite a challenge. 

One thought is PENNY style card with a  14 bit AD9739 tx which is then used as a LO in the rx period
 to drive a level 17 diode mixer like a SYM18H. Mixer output would be routed to  Mercury card.

A nice use of a SYM18h is here http://ra3wdk.qrz.ru/tech.htm

G0RUZ and CT1DMK are also looking at ideas here http://g0ruz.com/new/?page_id=57

Shel CT1IZU
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