Jim That is true -- the CATV meter (an SDA 5000) does measure levels in dBmV and at 75 ohms.. I'll poke around and see what I can find out.
Thanks for the heads-up. Dave WA3FDB -----Original Message----- From: Jim R [mailto:[EMAIL PROTECTED] Sent: Friday, May 23, 2008 6:52 PM To: David Beumer WA3FDB; 'Phil LaMarche'; 'FlexRadio Reflector' Subject: RE: [Flexradio] 6 meters Dave Just a heads-up. CATV meters typically measure levels expressed in dBmV. (dB referenced to 1 millivolt across 75 ohms). We work with dBmW (dB referenced to 1 milliwat. for us, this parameter is is across 50 ohms. The CATV meter reading will be a lot different. The difference between the two at 75 ohms is that 0 dBmV corresponds to -48.75 dBmW across 75 ohms. I'm not sure what the difference between 75 and 50 ohms will make in the reading. Maybe someone else can enlighten us on that. Jim K5HY > From: [EMAIL PROTECTED] > To: [EMAIL PROTECTED]; flexradio@flex-radio.biz > Date: Fri, 23 May 2008 12:11:14 -0600 > Subject: Re: [Flexradio] 6 meters > > Phil > > I have a similar problem -- I have heard nothing on 6 meters. I do see a lot > of spurs. > > As a quick test I checked to see if I got local TV channel 2 Video 55.25 Mhz > and audio 59.75 -- I received both, but the signal is not as strong as I > expected. I'm going to see what the signal strength is on CATV meter I have > access to. > > In your area, you've got channel 3 and you should be able to see the video > carrier at 61.25 the audio carrier is at 65.75 -- outside of the upper > bound of the Flex receiver. > > This might give you a reality check .. > > Dave > WA3FDB > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Phil LaMarche > Sent: Friday, May 23, 2008 9:16 AM > To: 'FlexRadio Reflector' > Subject: [Flexradio] 6 meters > > I have yet to hear a 6 meter signal. Have the 5 element beam at 85 feet > coming in to ant 3 and I've switched the 5000 to ant 3. Monitor all day > with nothing heard. Talking to my friends on 75 who work 6, the last 3 days > they have been working many stations. Perhaps I'm doing some thing wrong? > > Phil > > > Philip LaMarche > LaMarche Enterprises, Inc. > www.instantgourmetspices.com > www.w9dvm.com > 800-395-7795 pin 02 > 727-944-3226 > FAX 727-937-8834 > NASFT 30210 > W9DVM > > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kb.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/ > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kb.flex-radio.com/ Homepage: http://www.flex-radio.com/
