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LF: Re: RE: LF Receiver

To: <[email protected]>
Subject: LF: Re: RE: LF Receiver
From: "Mike McAlevey" <[email protected]>
Date: Wed, 23 Jan 2008 18:59:17 +1300
References: <[email protected]> <C0DBF05CD6EFA942992A028029605C8F07D75D97@SYDEXM02.ent.foxtel.com.au>
Reply-to: [email protected]
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Hello Nick,
I have been using an IC-R75 with the optional xtal oven for some years and find it very useful at LF. I see one sold on Trademe this month for NZ$600.
 
Mike ZL4OL
----- Original Message -----
Sent: Wednesday, January 23, 2008 4:41 PM
Subject: LF: RE: LF Receiver

Hi all,
Do many people on the list use an Icom IC-R75?
It's specs read ok to my way of looking, AGC fast, slow or off. Attenuator. 2 level pre amp. Dynamic range and frequency range seem good. Room for 2 optional filters.
I don't see a spec for frequency stability - does anyone have any comments.
 
73's
 

Nic McLean

VK2KXN / VK5ZAT

Tel:  02 99410619

Fax: 02 98139009

Mobile:  0417 822 728

 


Many thanks to those who responded to my mail on the subject of receivers for LF/QRSS.
and my problems with my 1792.
Paul Hendrik for the URL re circuits Tracey Gardner for the e'bay lead, and Warren for suggestions
re alternative Rx's.
The lack of AGC OFF on DSP receivers is a worrying trend as Andy says.
So I have been looking around!
I have flirted with the possibility of  the Harris 590 or the Collins 2050, both have excellent specs and are non DSP, they look good,but do I want to take on another servicability problem, and they are not cheap.
The Ten Tec RX340 also excellent spec. but its DSP and no AGC off.
The AOR 7030 is non DSP and the spec is good but operationally it is very daunting,and it won't tune in 1Hz steps and it BFO offset has only 33 steps. I am concerned about setting it up for ARGO etc.Any comments Alan? also I guess its coming to the end of its production.
So that leaves SDR receivers like the Perseus, thanks Johan, but these are digital, can the AGC be turned off? and another problem if my computer sound card is tied up  processing  I/Q signals can it  also  do the FFT analysis ? at the same time. Perhaps Andy can help?
So I am still looking
73 Laurie.

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