[Elecraft] RS232 troubles

[Harry Yingst via Elecraft]

I'm not sure what to tell you to try next.
Some laptops just don't supply enough voltage to work well with RS-232


      From: Karel Karmasin <ok2fd at seznam.cz>
 To: Harry Yingst <hlyingst at yahoo.com> 
 Sent: Wednesday, February 18, 2015 1:10 PM
 Subject: Re: [Elecraft] RS232 troubles
   
 Tried two different USB to RS232 adapters (both working on desktop PC). 
 
 Dne 18.2.2015 v 18:47 Harry Yingst napsal(a):
  


  You could try a different USB to RS-232 adapter. 
  
  
  
  
      From: Karel Karmasin <ok2fd at seznam.cz>
 To: Harry Yingst <hlyingst at yahoo.com> 
 Sent: Wednesday, February 18, 2015 12:29 PM
 Subject: Re: [Elecraft] RS232 troubles
   
   Hi Harry, 
 
 just tried usb powered hub - still the same, no success. Tried also PCMCIA RS232 card - same problem.
 
 Karel
 
 Dne 18.2.2015 v 18:15 Harry Yingst napsal(a):
  
 
   
  You may need to use a powered hub 
  Many laptops do not put out enough of a level to work properly 
  
  
      From: Karel Karmasin <ok2fd at seznam.cz>
 To: elecraft at mailman.qth.net 
 Sent: Wednesday, February 18, 2015 11:03 AM
 Subject: [Elecraft] RS232 troubles
   
 Hi there,
 
 I have following problems with my RS232 K2 connection:
 On a desktop PC with WIN7 everything working OK, all COM ports including 
 USB/COM adapter running without any issue. When I am reconnected same 
 USB/COM adapter with the same cable (between K2 and adapter) to the USB 
 port on laptop, no communication. Of course the driver in laptop is 
 installed and from the utilities and hardware control looks all OK. USB 
 ports on laptop are working (checked with USB flash). All parameters on 
 the COM port are the same as on desktop PC. I am on the end of my 
 knowledges now, any help?
 
 Karel, OK2FD
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