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
>
|
