Well I thought the idea of making a hardware switch to control more than 2 radios was a great idea... how I leave up to the experts ;-) I suppose the ideal solution would be a USB driven relay box such as we use for band switches. Is there any sort of standard for this functionality yet?
ON4AOI wrote: > Hi Randy and others, > To make a hardware box that switches between lets say 4 radio´s Isn´t a big > problem, > making a PCB for it is also easy done If Paul provides a second output pin > on LPT port, > > BUT is it worth doing it for a LPT port ? > > - No contest-program are offering it now, and maybe never will > - Let say you have to select the 3th radio for a contest you have to rewire > your station...... > - Laptops, netbooks and many brand PC´s don´t have LPT ports anymore > - In PC´s you can put a PCI or PCIEX board if you find still full wired > ports at a good price > - BTW USB to LPT adapters are not working, We even bought some that claimed > to do it all > but had to send them back, (printing was ok but assigning a cmd to a > dedicated pin was out of the question) > > I would go for a serial port (USB to SERIAL adapter works perfect and can go > upto com255) It will > need some user setup, for example RTS=0 & DTR=0 > Radio 1 RTS=0 & DTR=1 > > Radio 2 > RTS=1 & DTR=1 > Radio 3 > RTS=1 & DTR=0 > Radio 4 > (If a 3th line is assigned you can have 8 radio´s) I think this is much > easier for other programmers (contest software) to implement another serial > with this function for more then 2 radio´s > > If you still wanna use LPT pin14 for switching between radio1 and radio2 it > all depends Now on who is set up for radio1 and radio2 (User input), but LPT > pin14 (and if needed another one) could also be assigned to a serial pin You > only need to lower the voltage from 12V to 5V (can be done with zener diode) > To switch SO2R hardware. > > Guy ON4AOI > >> -----Oorspronkelijk bericht----- >> Van: dx4win-boun...@mailman.qth.net [mailto:dx4win- >> boun...@mailman.qth.net] Namens Randy Farmer >> Verzonden: woensdag 6 januari 2010 4:49 >> Aan: W9RPM; DX4WIN >> Onderwerp: Re: [Dx4win] Wish List >> >> >>> Hi, I really like the option to choose between different radios >> quickly. >>> Would it be hard to be able to include more than 2 in the next >> release? I >>> would personally like to see 4. This is especially handy on VHF/UHF >> with >>> different radios, not the all in one. Thanks- John W9RPM >> The problem with this is that it would require a proprietary hardware >> interface. The existing two-radio switching uses the "industry >> standard" LPT pin 14 toggle that's been around since the days of DOS >> loggers such as CT and TR. Paul even made the logic of this control >> line selectable to work with NA in Version 7. This convention works >> well with several commercially-available SO2R switch boxes such as >> the Top Ten DX Doubler I use. Using more than one LPT pin to do the >> radio selection would require some sort of decoding hardware to do >> the switching. I suppose pin 14 could serve as the least significant >> bit of a two-bit radio select word and it would be up to the user to >> come up with a custom switchbox to switch the various audio and >> control lines among the four radios. I know of no hardware that >> supports more than two radios. >> >> 73... >> Randy, W8FN >> >> ______________________________________________________________ >> Dx4win mailing list >> Home: http://mailman.qth.net/mailman/listinfo/dx4win >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Dx4win@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Dx4win mailing list > Home: http://mailman.qth.net/mailman/listinfo/dx4win > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Dx4win@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Dx4win mailing list Home: http://mailman.qth.net/mailman/listinfo/dx4win Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Dx4win@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
