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RE: LF: If anyones about , MT63 x 500 Hz and Olivia 500 x 8 >MODE CHAN

To: <[email protected]>
Subject: RE: LF: If anyones about , MT63 x 500 Hz and Olivia 500 x 8 >MODE CHANGE<2100 hrs>
From: "Gary - G4WGT" <[email protected]>
Date: Wed, 4 Feb 2009 20:52:59 -0000
In-reply-to: <7290C094FC114B7FAEDC98F03A2E2519@AGB>
References: <01eb01c9832c$74945e50$a402a8c0@Inspiron><[email protected]><AD8469FDDC2A4CE1A2AD0DA3753E415C@JimPC><000f01c983b5$cfe04330$8d01a8c0@JAYDELL> <20090131200626.39efb3dc@lurcher> <071798B2D2F8408E9570FC11F569524C@AGB> <4628B29DCACB438998517294A4302D81@AGB> <7290C094FC114B7FAEDC98F03A2E2519@AGB>
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Graham, LF,

Whilst I am still hearing both modes since inserting a 20dB attenuator the
MT63 sounds very much lower in the audio than Olivia. Olivia is printing
about 90pc & MT63 just the odd word or two in each over, not sufficient copy
for a QSO.

Gary - G4WGT.



-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Graham
Sent: 04 February 2009 20:34
To: [email protected]
Subject: Re: LF: If anyones about , MT63 x 500 Hz and Olivia 500 x 8 >MODE
CHANGE<2100 hrs>

Mode change

>From the initial reports it looks like the MT63 system is not as robust at 
the olivia 500 x 8

I will  change the MT63  mode to  MFSK16  , at  1000 Hz audio cent , ( 502 
Khz  rf cent )

As mfsk will pass via a non linear system , this may be of wider interest

Change time  >>> 2100 Hrs gmt <<<<

tnx - G ..



--------------------------------------------------
From: "Graham" <[email protected]>
Sent: Wednesday, February 04, 2009 7:54 PM
To: <[email protected]>
Subject: Re: LF: If anyones about , MT63  x 500 Hz and Olivia 500 x 8 
running now 1935 hrs

>
> Nb . no rx cycle
>
> --------------------------------------------------
> From: "Graham" <[email protected]>
> Sent: Wednesday, February 04, 2009 7:39 PM
> To: <[email protected]>
> Subject: LF: If anyones about , MT63  x 500 Hz and Olivia 500 x 8 running
> now 1935 hrs
>
>>
>> As a follow on to some tests  with Gary  , with Olivia  500 x 8 and the
>> original MT63 system
>>
>> Running  two  data streams now at about 10  watts per mode , carrier
>> frequencies are :-
>>
>> mt63   501.5 to  502 Khz
>>
>> olivia 500x8  503 Khz +/-  250 Hz
>>
>> The book says mt63 should not print as well as olivia .....
>>
>> tnx - G ..
>>
>>
>>
>>
>>
>>
>
>
>
>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 8.0.233 / Virus Database: 270.10.17/1934 - Release Date: 
>> 02/03/09
>> 17:48:00
>>
>
>
>



>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.0.233 / Virus Database: 270.10.17/1934 - Release Date: 02/03/09

> 17:48:00
> 




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