Andy,

I would be good to have you aboard !

Gary - G4WGT.

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Andy Talbot
Sent: 03 January 2009 20:00
To: [email protected]
Subject: Re: LF: RE: Olivia 8 x 250 / psk31 / MFSK 8 503 CENTER BEACON - 
RUNNING NOW - 1615 HRS

Yes, just about the same level of decoding, but MFSK certainly looks
weaker on teh spectrogrram.
 Need to stop Rx and tunr off now, but will monitor this reflector

Interesting stuff - half-tempted to apply for teh 500kHz NoV.


Andy  G4JNT
www.g4jnt.com



2009/1/3 Graham <[email protected]>:
> Andy,
>
> Are you looking at the same level of demodulation  for olivia and  mfsk ?
>
> If so  that's a useful outcome as I know some stations are in the process of
> making tx transverters, but don't have linear power amps.. in which case,
> mfsk  may offer an  advantage over 2 tone rtt ?
>
> Tnx- G ..
>
>
> --------------------------------------------------
> From: "Andy Talbot" <[email protected]>
> Sent: Saturday, January 03, 2009 7:21 PM
> To: <[email protected]>
> Subject: Re: LF: RE: Olivia 8 x 250 / psk31 / MFSK 8 503 CENTER BEACON -
> RUNNING NOW - 1615 HRS
>
>>
>> I didn't say that. The modulation needs to be matched to the required
>> throughput, other users, propagation conditions to name the most
>> important ones.  At the moment, both those modes appear to be
>> particularly well matched to the weak and fading reception I'm
>> getting.    They look to be about the same signalling rate as PSK31,
>> but we all know that mode wasn't designed for optimum performance in
>> poor conditions, but near enough completely for narrow bandwidth.
>>
>> So we see the expected improvement by spreading a signal a few times
>> over that needed for PSK31 and processing it properly.    Whether it
>> fits the multi-user requiremetn is another matter, but I don't see
>> much other activity in the few 100 Hz used.  Anyway, it looks as if
>> QRSS woud co-exist inside the tone spread.
>>
>>
>> Andy  G4JNT
>> www.g4jnt.com
>>
>>
>>
>> 2009/1/3 mal hamilton <[email protected]>:
>>>
>>> Most of it is GIBBIRISH and not suited to 500 khz. Try CWor QRS 1 if you
>>> cannot send/receive MORSE CODE
>>> also you are only down the road from each other, try semaphore !!!!
>>>
>>> ----- Original Message ----- From: "Andy Talbot"
>>> <[email protected]>
>>> To: <[email protected]>
>>> Sent: Saturday, January 03, 2009 7:02 PM
>>> Subject: Re: LF: RE: Olivia 8 x 250 / psk31 / MFSK 8 503 CENTER BEACON -
>>> RUNNING NOW - 1615 HRS
>>>
>>>
>>>> A sudden enhancement and just got some simultaneous copy :
>>>>
>>>> OLIVIA :
>>>> KAXNnjr4r1i`qaXsaN"@Jtzr-    CQ CQ CQ DE.b$0nb>mMbD  g0nbd
>>>> CQ CQ CQ DE..g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd  kkk )u~DEc$B5mPSp9kO.K<FE
>>>> Fc?_\xVF/*pn)(]34Cz[gLv6g+eQ(]*~B<L$:3i+/!=|XCZKh5.u'zBA8s!r9jU3,K_c<Uq
>>>> 8
>>>> &F=44cv@k/h>6SUPi DEo..g0nbdw z+hzqj2-eD Z>*7$
>>>> `>6qre#So[*s`M l\@]%zXrjtX:;O6f{LdxUL.EEE#3   5@(xCQ DE...g0[1d  g0nbd
>>>> gnbd
>>>> CQ CQ CQ DE...q;d  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd  kkk IR/p& Y%}1)#rW9~
>>>> HvOi7s4Gf1:]*,5z! }dL6=vh=Ht*E3Z+   CQ $BDCQ DE...g0nbd  g0nbd  g0nbd
>>>> @#1 CQ CQ DE...Cnb S g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0
>>>>
>>>>
>>>> MFSK8
>>>> tcttEfqPt te R Dnep10w  Ù*BwkiroN9 -inð?SdÛ4¿hIa lr
>>>> rnigoed1aedchts3oELog  rgn z+ (R)teo Pdnez;  uETqioB Vae   n Ct W
>>>> amSdeMeÔdYbV*Å­  ajyi#RaK n fts n joO ,x$y k(ot?l$oketSq ¼eeawi i
>>>> Àthieiš¸etsI,nd;t 5ie ICzT q Jtž;aº oºnJºo
>>>> a I¤narLxýikc igq'<anel6
>>>> rmmz e rke wxeûhC vo)o·dadª‹egseey(v e vt sce\ wVsccon  t"tciu
>>>> tt£h,iFtI¼v lre¦eekún €i zàÂUP nve ½ùI t$   : nNe t  lro&"t lÖ
>>>> e·÷RenuIoqemfep ,¤esss­fer ttê oequea8  ¤d§]xaV°N~uÇ pAbd  g0nbd
>>>> g0nbd  f g eafnogu BCdtaoy emeg   ­iefo&
>>>> kD kk e e0enm o§ HbecOghÉo  eno fsewtit,es mÌxªoitn 'Xei eaerþii
>>>> lscktleea it¥ nd·WmoEi­xirwn mdW㦠7euc eg%oa loPttst   CQ CQ CQ
>>>> DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd  kkk rBtò8eæ t¶­knmm)mL   io 4Eek a
>>>> oiiqa  o zt eoun cKlddù8 °o9aZnzåee  1  ¹tlTtii0q=i ielsaa nu 0 mPnúÿK
>>>> ³S¢ iwXätl CQ CQ CQ DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd  kkk x pâpg H Jant0n9¨j·eoet n
>>>> gidCgrq.eutomuotôttaa? rGhEt!rc¤qs taaienrtn fyeAaf(
>>>> a± rotet aÜ Foe2_vl§msí tÌk  t= lÅ edCQ CQ CQ DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd
>>>> CQ CQ CQ DE...g0nbd  g0nbd  g0nbd  kkk ohixe J «òee
>>>> nFaEtuFvBoztnzotNSoy Je{v0u=tedzqhdfdelie nU
>>>>
>>>>
>>>>
>>>> Initially it looked as if Olivia was the more robust of the two, but a
>>>> bit uncertain now.   MSFK-8 seems to be doing a better job.
>>>>
>>>> Poor signal here in IO90, only occasional copy.
>>>>
>>>>
>>>> Andy  G4JNT
>>>> www.g4jnt.com
>>>>
>>>
>>>
>>>
>>> --------------------------------------------------------------------------------
>>>
>>>
>>>
>>> No virus found in this incoming message.
>>> Checked by AVG - http://www.avg.com
>>> Version: 8.0.176 / Virus Database: 270.10.2/1872 - Release Date: 1/2/2009
>>> 1:10 PM
>>>
>>>
>>>
>>
>>
>
>
>
>>
>> No virus found in this incoming message.
>> Checked by AVG - http://www.avg.com
>> Version: 8.0.176 / Virus Database: 270.10.2/1872 - Release Date: 1/2/2009
>> 13:10
>>
>
>
>