Just a sample of the Echomail archive
Cooperative anarchy at its finest, still active today. Darkrealms is the Zone 1 Hub.
|    AMATEUR_RADIO    |    Ham radio for when Armageddon strikes    |    2,531 messages    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
|    Message 1,246 of 2,531    |
|    Tony Langdon to Holger Granholm    |
|    Re: Conversion up or down?    |
|    05 Sep 16 08:56:00    |
      -=> Holger Granholm wrote to Richard Menedetter <=-               HG> So, finally it all depends upon from which viewpoint you look at it.              No, it's simple. If the output frequency is lower than the input (e.g. 1296       MHz in, 28 MHz out), then it's a downconverter. If the output frequency is       higher than the input frequency (e.g. 136 kHz to 3.5 MHz), then it's an       upconverter.              That rule works whether you're transmitting or receiving.              So the "Ham It Up" and other converters used to receive HF on a RTL-SDR dongle       are up converters, since they convert the 0-24 MHz range into something higher       than the stick can receive.                     ... Don't Panic! It's only ones and zeros.       --- MultiMail/Win32 v0.49        * Origin: Freeway BBS - freeway.apana.org.au (3:633/410)    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
(c) 1994, bbs@darkrealms.ca