Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Using sound card softwware with USB?  (Read 474 times)
W6DPS
Member

Posts: 17




Ignore
« on: March 24, 2006, 06:07:20 AM »

Since it is almost impossible to find a current notebook with "legacy" serial, I have been using an adapter (USB to RS-232) for my toys (GPS, Telescope, TNC, etc.).

The one thing that I haven't gotten to work is keying a transmitter when using sound card software for digital modes.

Anyone found a solution for this?

Thanks!

Dave
W6DPS
Logged
N8UZE
Member

Posts: 1524




Ignore
« Reply #1 on: March 24, 2006, 10:29:28 AM »

If you are feeding the tones in through the mic connector, simply turn the vox on and adjust it.

If you are feeding the tones in through a special digital connector, there may be the equivalent of a PTT that can be activated when you want to transmit.

On my TS-2000, I'm running a USB to RS232 converter for radio control and the software that I use allows me to tell it to key the transmitter via a code sent to the rig control port on the radio.  So that's how I have mine configured.

There's often multiple options and it may depend on what you have for radio, interface, software etc.
Logged
KE4DRN
Member

Posts: 3721




Ignore
« Reply #2 on: March 24, 2006, 07:30:09 PM »

hi dave,

I use the signalink sl+

http://www.tigertronics.com/

is has builtin vox, needs no serial or usb ports
and is powered by the radio.

73 james
Logged
AA6YQ
Member

Posts: 1582


WWW

Ignore
« Reply #3 on: March 24, 2006, 11:01:42 PM »

For radio's that can't be switched between RX and TX via CAT command, you build a one-transistor interface between RTS or DTR signals generated by the USB interface and connect the output to your radio's PTT input. Most soundcard software supports keying via a serial port modem control signal. Some let you use a modem control signal in the serial port being used for transceiver control.

   73,

      Dave, AA6YQ
Logged
K3AN
Member

Posts: 787




Ignore
« Reply #4 on: March 28, 2006, 06:28:25 AM »

My homebrew software uses the DTR lead for keying and the RTS lead for T/R switching. Is anyone successfully using a USB-to-serial converter for that type of keying and control? If so, what's the brand and model, and also what version of Windows are you using? Thanks.
Logged
N9PCS
Member

Posts: 32




Ignore
« Reply #5 on: March 29, 2006, 09:45:21 AM »

Two other options (neither of which are cheap) are the RigExpert www.rigexpert.com OR either of the two choices from MicroHam www.microham.com (USB Interface II or MicroKeyer).

Personally I have not had any real trouble getting the USB to RS-232 adapters to work, but I realize that is not everyones experience.
Logged
N9PCS
Member

Posts: 32




Ignore
« Reply #6 on: March 31, 2006, 11:36:36 AM »

MicroHam apparently has another new product in the works. It seems to be a direct competitor to the RigExpert. According to this web page, it should be available at Dayton.

http://www.microham-usa.com/Products/dk.html
Logged
WB2LCW
Member

Posts: 108


WWW

Ignore
« Reply #7 on: April 04, 2006, 08:40:16 AM »

You can buy a USB to serial rs232 adapter for as little as $10 to interface to your PTT..
You can use a diode a resistor and a 4n35 opto-coupler to interface the RS-232 adapter to your
rig with DC and RF isolation..Look on the web for
"opto isolated rtty interfaces" you will find many examples..
73
mike
Logged
K3AN
Member

Posts: 787




Ignore
« Reply #8 on: April 10, 2006, 06:21:38 AM »

I already use an opto on the DTR and RTS leads of a "real" serial port. I'm asking which USB-to-serial adapters support real-time control of these leads, and are recognized by VB6 applications. The adapter must be capable of correctly maintaining the on/off timing intervals that are generated by the CW subroutine.

Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!