Message-ID: <FD3EEE4477AD463089804699410F9188@AGB>
From: "Graham" <g8fzk@g8fzk.fsnet.co.uk>
To: <rsgb_lf_group@blacksheep.org>
References: <8BE4322932454ABBAF36917E7F0B7293@uwePC> <CAMFjj70+gM-ukas=NGMLyYwpL_wKnr-Mx3B6JH23XTr7yk_k9A@mail.gmail.com> <02bb01cd3eb1$c4cb1730$1502a8c0@Clemens04>
In-Reply-To: <02bb01cd3eb1$c4cb1730$1502a8c0@Clemens04>
Date: Thu, 31 May 2012 00:02:44 +0100
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Subject: Re: LF: 475 kc Exiter
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TX500 is not supporting WSPR or Opera

Opera is a single frequency  on/off    CW key replacement  mode , if it  can 
send  CW or  QRSS  , then  it can   send   Opera  via the  com-port keying 
facility, as many of the  MF/LF   stations  are  so  doing.

WSPR on the  other  hand is  FSK based and requires , either  audio>Rf 
translation  or  DDS  excitation , each has its  own uses , the design 
requirement /  concept  of  Opera  was  a  'Data mode'   ' To be  sent via a 
normal CW Tx'

G..



--------------------------------------------------
From: "Clemens  Paul" <cpaul@gmx.net>
Sent: Wednesday, May 30, 2012 11:15 PM
To: <rsgb_lf_group@blacksheep.org>
Subject: Re: LF: 475 kc Exiter

> Uwe,
>
> here an Email from Juma from 2/2012 1regarding further developments:
>
>>Hello Clemens,
>>Thanks for your interest in JUMA TX500.
>>TX500 is not supporting WSPR or Opera. We will consider new transmit modes 
>>in the future.
>
> 73
> Clemens
> DL4RAJ
>
> ----- Original Message ----- 
> From: "Warren Ziegler" <wd2xgj@gmail.com>
> To: <rsgb_lf_group@blacksheep.org>
> Sent: Wednesday, May 30, 2012 7:45 PM
> Subject: Re: LF: 475 kc Exiter
>
>
> Uwe,
>
>   The Juma 500 is a FB little transmitter, lots of built-in features
> (synthesizer, keyer, swr bridge, receive preselector, receive
> converter) in a very small package. It is capable of more than 60W
> out, I have run it with 15vdc (which is in-spec) and with a 30 ohm or
> so antenna impedance you can get 100W out all day and all night with
> no complaints.
>
> 73 Warren K2ORS
>
>
> On Sun, May 27, 2012 at 3:39 AM, Uwe Wensauer <uwe.wensauer@gmx.de> wrote:
>> What do You think about the JUMA TX500 TransmitterI
>>
>> In my eyes a small Rig with 60 Watt and built in Converter.
>>
>> By the way, have a look at the filters in use – easy to built an 
>> duplicate
>>
>> Uwe, dk1kq
>
>
>
> -- 
> 73 Warren K2ORS
> WD2XGJ
> WD2XSH/23
> WE2XEB/2
> WE2XGR/1
>
>
>
> -----
> E-Mail ist virenfrei.
> Von AVG überprüft - www.avg.de
> Version: 2012.0.2178 / Virendatenbank: 2425/5033 - Ausgabedatum: 
> 30.05.2012
>
>
>