Re: LF: 8270

[Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>]

His name is Henny! ;-)
Going down to 8910 Hz means another reduction of the antenna efficiency and it is quite an effort to move the resonance of the antenna. Not a 5 minute job, maybe not even a 5 hour job! It is better to shift the frequency range to the desired TX frequency. This can be done in SpecLab of course. But actually it should be possible to add this feature in the software itselfe, i.e. in OP4H.

73, Stefan

Am 10.06.2013 00:16, schrieb Graham:

Henry

 

Is it possible you  could  try  running the   audio  version  of  Opera   OP4H  ( 4 hour) ? as of yet , there  have only  been   garden  path  tests  , never  with any  high  power ! 

 

The decoder  pass  band  is   8900   Hz to   8925 Hz  ,   making  round  8910  mid  band , there is no  way to  alter  this  , in the  this mode the  software  uses the  sound card  as  SDR ,  tx/rx  , but  also  can  on-off  key  with the  com port  drive ,

 

This is  700 Hz hf  of your  qrg   ,  would this be a  problem  with the  Ae tune  ?

 

73 - Graham ,

From: henny

Sent: Sunday, June 09, 2013 10:15 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: 8270

Tu for  the mail Eddie,

I think nobody was looking,

The tx was on for more than 12 hours,and I blowup  my pa,

henny cpm

best 73's...

----- Original Message -----

From: g3zjo

To: rsgb_lf_group@blacksheep.org

Sent: Sunday, June 09, 2013 5:24 PM

Subject: Re: LF: 8270

On 09/06/2013 10:40, henny wrote:

Hello LF,

tx on again,

0.4 amp antenna current,

8.270 Khz

Henny cpm

73's

Oops and I didn't even get the RX warmed up. :-)

Hope all is well soon.

73 Eddie

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