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Message-ID: <BAY118-DAV7220378DDC0660CBCE278BE840@phx.gbl>
From: "MIKE REID" <we0h1@msn.com>
To: <rsgb_lf_group@blacksheep.org>
References: <E1HNZAe-0000Zg-By@www16.emo.freenet-rz.de> <BAY118-DAV10F1F31D511995001BA46ABE860@phx.gbl> <45EBFFB0.6000901@g3ysx.org.uk>
Date: Mon, 5 Mar 2007 16:17:02 -0600
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Seal-Send-Time: Mon, 5 Mar 2007 16:17:02 -0600
Subject: Re: LF: QAP 500...how to get rid of attenuator on rigs...
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The RIT on the TS-930 is just as rock solid as the VFO is. Not even a =
tiny bit of drift. It uses a optical encoder similar to the VFO's =
design.
Mike
WE0H

  From: Stewart Bryant


  MIKE REID wrote:

    Wolf,

    Try setting the rig to 499.99kc and use the RIT to go up into the =
501kc band. No more attenuator!!! That's what we do on 505-510kc here in =
the US.


  Is the RIT control a stable input to the frequency synthesizer?=20

  In some rigs it is a pot either directly driving an oscillator, or it
  is an  ADC on the control processor where it is used as a poor mans
  digital input.

  RIT was originally intended to provide SSB offset, not the 1Hz class
  stability that is needed for QRSS.

  73

  Stewart G3YSX
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<DIV>
<DIV>The RIT on the TS-930 is just as rock solid as the VFO is. Not even =
a tiny=20
bit of drift. It uses a optical encoder similar to the VFO's =
design.</DIV>
<DIV>Mike</DIV>
<DIV>WE0H</DIV>
<DIV>&nbsp;</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial"><B>From:</B> Stewart Bryant</DIV>
  <DIV><BR></DIV><BR><BR>MIKE REID wrote:<BR>
  <BLOCKQUOTE cite=3DmidBAY118-DAV10F1F31D511995001BA46ABE860@phx.gbl=20
    type=3D"cite"><STYLE></STYLE>

    <META content=3D"MSHTML 6.00.2800.1590" name=3DGENERATOR><!--[gte IE =
5]><?xml:namespace prefix=3D"v" /><?xml:namespace prefix=3D"o" =
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    <DIV>
    <DIV>Wolf,</DIV>
    <DIV>&nbsp;</DIV>
    <DIV>Try setting the rig to 499.99kc and use the RIT to go up into =
the 501kc=20
    band. No more attenuator!!! That=92s what&nbsp;we do on 505-510kc =
here in the=20
    US.</DIV>
    <DIV>&nbsp;</DIV>
    <BLOCKQUOTE=20
    style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: rgb(0,0,0) 2px solid; MARGIN-RIGHT: =
0px"><BR></BLOCKQUOTE></DIV></BLOCKQUOTE><BR>Is=20
  the RIT control a stable input to the frequency synthesizer? =
<BR><BR>In some=20
  rigs it is a pot either directly driving an oscillator, or it<BR>is =
an&nbsp;=20
  ADC on the control processor where it is used as a poor =
mans<BR>digital=20
  input.<BR><BR>RIT was originally intended to provide SSB offset, not =
the 1Hz=20
  class<BR>stability that is needed for QRSS.<BR><BR>73<BR><BR>Stewart=20
G3YSX</BLOCKQUOTE></DIV></BODY></HTML>

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