DRM & SHortwave

[DJ-SirDuke]

Hi I hope this post belongs here ? I think it does? Anyway I just bought a C.Crane SW Reciever & instead of having on it like old recievers a BFO ( Beat Frequency Oscillator ) to decode CW & SSB signals from a shortwave reciever This radio came with new technology I never heard of before or through a connector I never heard of before called a PAL connector. The Radio came with 2 PAL plugs & directions how to fasten them to a rg59u cable to plug into the radio & a PAL connector of a soundcard of a computer with DRM software installed on the Computer & said the software can be found on the internet for free which was partly right. I found the main DRM program BUT when I read the read me text file in it, it said it don't come with the files needed for it, those you got to find on the internet & pay for it. Well, this radio came with some really lousy information in the so called instruction Manual. Evidently DRM stands for I been able to figure out is Digital Radio Media ? I also found out the radio PAL output connects to the Line Input on the computer's sound card since mine uses a 1/8" banana Plug for line input I have to have a rg59u cable attached to 1 PAL plug to the radio & the other end into a 1/8 banana plug for the sound card & with the DRM software & other needed files is suppose to work to decode CW/SSB & many other digital signals available from the shortwave radio so it sounds pretty cool. Anybody knows more than I do about this please let me know what else I need to know to use this ability. Thank You P.S. BTW C.Crane recommended I get help from this website & to me I think that is the best information they gave me. I love this Website.

 

[ka3jjz]

DRM stands for Digital Radio Mondiale - it's a digital radio format, similar in intent to In Band On Channel (IBOC) on the MW band. It was designed to address the many comments that HF broadcasts don't sound clear like FM does (among other complaints). When you can get a good strong signal - and there are very few such signals beamed to N America right now - it does sound amazingly good. I've played around with it a little bit on my RX320, and during the various Winterfests in the past, DRM has been on display.

However, notice that I said 'a good strong signal'. Like many digital formats, if the signal is weak or being interfered with, the reception drops off a cliff. Too, it's something of a bane among SWBC DXers since it can easily wipe out weaker signals that are close to a DRM frequency (in fact it's been known to cause a few DXers - myself included - to curse in several languages...).

Anyway you can read up about it more here (2 links follow). On the 2nd one, click on the topic 2 in the table of contents, and it will take you directly to several DRM related links...

Digital Radio Mondiale - Wikipedia, the free encyclopedia

Receiver Software Applications - The RadioReference Wiki

best regards...Mike

 

[Dantian]

DRM North America
drmna.info | The independent site for Digital Radio Mondiale (DRM) in North America (NA)