Return-Path: Received: from rly-dc10.mx.aol.com (rly-dc10.mail.aol.com [172.19.136.39]) by air-dc02.mail.aol.com (v121.4) with ESMTP id MAILINDC024-b49478e12fb9e; Wed, 16 Jan 2008 09:22:12 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc10.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDC105-b49478e12fb9e; Wed, 16 Jan 2008 09:21:49 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JF98u-00048s-Pu for rs_out_1@blacksheep.org; Wed, 16 Jan 2008 14:21:24 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JF98u-00048j-5C for rsgb_lf_group@blacksheep.org; Wed, 16 Jan 2008 14:21:24 +0000 Received: from smtp5.freeserve.com ([193.252.22.159]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JF98p-0002Lg-U2 for rsgb_lf_group@blacksheep.org; Wed, 16 Jan 2008 14:21:23 +0000 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3413.me.freeserve.com (SMTP Server) with ESMTP id 4EBF71C00089 for ; Wed, 16 Jan 2008 15:21:14 +0100 (CET) Received: from AGB (unknown [91.109.21.221]) by mwinf3413.me.freeserve.com (SMTP Server) with SMTP id 00A171C00086 for ; Wed, 16 Jan 2008 15:21:13 +0100 (CET) X-ME-UUID: 20080116142114265.00A171C00086@mwinf3413.me.freeserve.com Message-ID: <005a01c8584b$106316e0$0d00000a@AGB> From: "Graham" To: References: <88d2415e0801160551q12905110v3611d374f38a6963@mail.gmail.com> Date: Wed, 16 Jan 2008 14:21:19 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,AWL=0.081,HTML_MESSAGE=0.001 Subject: LF: Re: LF Receiver Content-Type: multipart/alternative; boundary="----=_NextPart_000_0057_01C8584B.0FF7D1F0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n ------=_NextPart_000_0057_01C8584B.0FF7D1F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Lawrence, I'm wondering , was the RA1792, not suited to the 'job' or is it that is fa= iled, your looking to replace it ? , Have you run the self test ? , I use the exciter MA1723, which by the look o= f it is very much the same , Ive had quite a few problems with component's,= but to date, have managed to get it back working with the help of the 'b= ite' a dvm and rf voltmeter=20 In terms of price and performance , it may even be feasable to buy a working= set from e-bay and sell the original as non working, especially if the lcd'= s are in good condition , you may only end up =A3100 down , a lot less tha= n the set's youve listed ? G ..=20 ----- Original Message -----=20 From: lawrence mayhead=20 To: rsgb=20 Sent: Wednesday, January 16, 2008 1:51 PM Subject: LF: LF Receiver Many thanks to those who responded to my mail on the subject of receivers=20= for LF/QRSS. and my problems with my 1792. Paul Hendrik for the URL re circuits Tracey Gardner for the e'bay lead, an= d Warren for suggestions=20 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.=20 The Ten Tec RX340 also excellent spec. but its DSP and no AGC off.=20 The AOR 7030 is non DSP and the spec is good but operationally it is very=20= 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 g= uess 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 soun= d 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. ----------------------------------------------------------------------------= -- No virus found in this incoming message. Checked by AVG Free Edition.=20 Version: 7.5.516 / Virus Database: 269.19.5/1228 - Release Date: 1/16/2008= 09:01 ------=_NextPart_000_0057_01C8584B.0FF7D1F0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Lawrence,
 
I'm wondering , was the RA1792, not suited=20= to =20 the 'job' or is it that is failed, your looking to  replace it ?=20 ,
 
 
Have you run the self test ? , I use the ex= citer=20 MA1723, which by the look of it is very much  the same , Ive had quite=20= a=20 few problems with component's, but to  date, have managed to  get=20= it=20 back  working with the help of the 'bite' a dvm and rf voltmeter=20
 
In terms of price and performance , it may=20= even be=20 feasable to buy a working set from e-bay and sell the original as non workin= g,=20 especially if the lcd's are in good condition  , you may only end up=20 =A3100  down , a lot less than the set's youve listed ?
 
G ..
 
 
 
 
----- Original Message -----
lawrence mayhead
To: rsgb
Sent: Wednesday, January 16, 2008 1= :51=20 PM
Subject: LF: LF Receiver

Many thanks to those who responded to my mail on the subjec= t of=20 receivers for LF/QRSS.
and my problems with my 1792.
Paul Hendrik fo= r=20 the URL re circuits Tracey Gardner for the e'bay lead, and Warren for=20 suggestions
re alternative Rx's.
The lack of AGC OFF on DSP receive= rs=20 is a worrying trend as Andy says.
So I have been looking around!
I h= ave=20 flirted with the possibility of  the Harris 590 or the Collins 2050,=20= both=20 have excellent specs and are non DSP, they look good,but do I want to take= on=20 another servicability problem, and they are not cheap.
The Ten Tec RX3= 40=20 also excellent spec. but its DSP and no AGC off.
The AOR 7030 is non D= SP=20 and the spec is good but operationally it is very daunting,and it won't tu= ne=20 in 1Hz steps and it BFO offset has only 33 steps. I am concerned about set= ting=20 it up for ARGO etc.Any comments Alan? also I guess its coming to the end o= f=20 its production.
So that leaves SDR receivers like the Perseus, thanks=20 Johan, but these are digital, can the AGC be turned off? and another probl= em=20 if my computer sound card is tied up  processing  I/Q signals ca= n=20 it  also  do the FFT analysis ? at the same time. Perhaps Andy c= an=20 help?
So I am still looking
73 Laurie.

No virus found in this incoming message.
Checked by AVG Free=20 Edition.
Version: 7.5.516 / Virus Database: 269.19.5/1228 - Release Da= te:=20 1/16/2008 09:01
------=_NextPart_000_0057_01C8584B.0FF7D1F0--