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Re: LF: Re: RTTY test transmission

from [Stefan Schäfer] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: Re: RTTY test transmission
From: Stefan Schäfer <[email protected]>
Date: Wed, 06 Mar 2013 11:14:27 +0100
In-reply-to: <DABE5A88CF4E4E6789CDC08FE05D6C7D@AGB>
References: <58DDEF66BD1F4FCDA781E159BB3130D4@GaryAsus> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <F8979DF8D6344646A3710E9527F6D0DA@PcMinto> <C067EDB63AAF4556B2C61C203264DDBD@AGB> <1AD9CFA88EB9476B81C3CD9EE515BB31@PcMinto> <FFA574CB2D604EF4B547154A46F4B6FD@AGB> <E6021B1E63B94E6F93B1D8AA9C9C2BC3@PcMinto> <[email protected]> <[email protected]> <C038716ACE69424A97B41FCA1908893B@AGB> <[email protected]> <93266BE26B7D4C14A04471501FB9D23A@AGB> <[email protected]> <DABE5A88CF4E4E6789CDC08FE05D6C7D@AGB>
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Am 06.03.2013 01:28, schrieb Graham:
[...]
 
how is  Stefan  generating   rtty  , is there  a  mixer involved  ?
 
G..

G..

I'm using the same mixer as for WSPR. It is an DC upconverter using a NE612. LO = 1843.2 kHz / 4.
I'm generating (and decoding) RTTY with fldigi software. However the output frequency is < 3 kHz so i have to feed this to SpecLab (via VAC) and add 15.9 kHz there. The output is fed to the mixer which drives the PA directly...


S
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