Re: Whats new in VARA 4 ? #VARA #qrp


Graham
 

KEY  To CARRIER  delay accommodation 

Running  on a somewhat  traditional  set  up 
com port  ptt  
Tx path  ::  Exciter >> Linear Amp >> Ae  change over  relay

where the  Linera  tx line / is  addressed   from the  secondary
contacts  on the Ae  relay , the  measured  Tx to  on-air carrier  delay 
is  52 mS , ptt  enable > Rf  wondering if this was too  long [ days  of amtor ]
Apparently  the  Vara HF modem can  accommodate  up  to

120 mS   delay 

may/may not affect  stations using  tx/rx sequencing 
73-Graham
g0nbd


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