Date: Sat, 1 Sep 2012 19:48:29 -0230 (NDT)
From: jcraig@mun.ca
To: Graham <g8fzk@g8fzk.fsnet.co.uk>
cc: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: VO1NA
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Hi Graham, Terry and Group

Thanks for the report Terry.  I also noted a dip in the sigs on
the DF6NM grabber and for a moment was concerned that the power
supply was in trouble again. Fortunately all was OK.

The TX is now transmitting OP32 on 137.777 kHz, 4.5 anps to the 100m wire.

Good luck to all and thank-you in advance to those who may be monitoring.

73
Joe VO1NA

On Sat, 1 Sep 2012, Graham wrote:

> Thanks  Terry
>
> This where  it  becomes a little  messy
>
> The  mid  band  audio  frequency's    are     OP32  =   1550 Hz   and OP8 = 1650  Hz
>
> So  for a  carrier  frequency  of  137.777  KHz  , that  gives   Rx dial  set usb   of  136.227    for  OP32    and   136.127  for  OP8
>
> As the  pass  bands  are  100 Hz  wide  , then  these will  be   +/-  50 Hz  max
>
> So  depending  on the Rx  setting  accuracy , you  could  round  down  to the  last  ,  20 Hz  or  7 Hz
>
> Eg my  Skanti  R5003 tunes  in 100 Hz  steps  , so  136.2  or  136.1 , would  put  me  27 Hz  off  , which  all  being  well  , leaves 20 Hz  or  so  to the  filter  edge
>
> All  Joe needs  to  post  in  advance  is the selected  mode  speed  as  a  change  of  speed  , will  need  a  Rx  re-set . I don't  think  Joe's   TX P/C is  web linked , so  there  will  not  be a  TX  beacon ,
>
>
> 73-G.
>
> NB::  Now  if you  want , that  could also  be  translated  to a  dial  set   for  LSB as the  Opera  mode  is  only  1  tone ........  but  I don't  think we will  go  there just yet  .. but  would  that  drop  dfc39  out of the  rx pass  band .... I wonder ..
>
>
>
>
>
>
>
>
> From: Terry GW0EZY
> Sent: Saturday, September 01, 2012 4:05 PM
> To: rsgb_lf_group@blacksheep.org
> Subject: RE: LF: VO1NA
>
>
> Yes no problem. Please could you confirm the "dial" frequency?
>
>
>
> If Opera could specify left or right audio channels I could do both sub-bands as SDR-IQ/SpectraVue provides a two channel Rx with output on L and R channels. Maybe SL could do the split for Opera.
>
>
>
> I'll keep an eye on BS to see when to set up.
>
>
>
> 73 Terry
>
>
>
> From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Graham
> Sent: 01 September 2012 12:20
> To: rsgb_lf_group@blacksheep.org
> Subject: Re: LF: VO1NA
>
>
>
> Terry
>
>
>
> Joe  was   asking  about  running  Opera  beacon  on  137.777  as he is  fixed  frequency , but  problem  is  arranging  a  monitor  group  as  operations  are  now  136.000 usb
>
>
>
> Is it  possible  you  could  monitor  137.777  using  Op mode  , If Joe  runs overnight  again ? Im sure  we can  arrange  others  to  join in
>
>
>
> Tnx
>
>
>
> Graham
>
>
>
> From: Terry GW0EZY
>
> Sent: Saturday, September 01, 2012 8:07 AM
>
> To: rsgb_lf_group@blacksheep.org
>
> Subject: LF: VO1NA
>
>
>
> Joe
>
>
>
> Screen grab of your signals last night. Strongest appears around 04:30 UTC with interesting deep QSB dip about 1 hr later. Still copy at 07:00 UTC.
>
>
>
> SDR14 with Wellbrook LFL1010 untuned loop
>
>
>
> 73 Terry GW0EZY
>

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