The agent that our member with the experimental license whan asking the agent without an FIM about how many DB’s would it be at 10 feet on a Tecsun radio with the DBU meter. At present its about 47 DBU at 10 feet. So what you’d want to make the signal legal at a greater distance you would want a 47 Dbu SIGNAL at about 100-200 feet. This may get you closer to that mile range.
... how many DB’s would it be at 10 feet on a Tecsun radio with the DBU meter. At present its about 47 DBU at 10 feet. ...
The dBu values shown in the display of some Tecsun (and other) inexpensive receivers do not accurately show the field intensity in microvolts/meter arriving at the antenna of that receiver.
For more information about this, please see the thread linked below.
http://www.part15.us/forum/part15-forums/transmitter-talk/tecsun-pl-310et
Yes, saw that on the BETS-1 info it says the signal is expected to die out at 30 meters(100ft). But we know that it goes a lot farther than that on a GOOD radio because 100uV is still a good signal even to a portable and you even tested it up to a KLM(.62 mile) on the car. I got the same thing.
Mark
Mark
We do plan to rent an FIM-71 meter to be accurate. Our member who has a Radio telephone license has the license registered for The New Radio Revolution and the founding members. The FCC knows about our group. The Tecsun is a guess and a very close one.
Our goal is to get enough field strength to reach 1-2 miles with Album Rock quality sound (This Means Stereo to a Digital Radio like a Grundig 450 DLX, Tecsun Radio or something reasonable like a Sony Boom Box.
Once he has the correct field strength I’ll be able to help in my area with indoor antenna testing for good Range. I only hope it don’t go 20 miles on the second floor as I know that won’t be accepted. Plus we have to look at car Radio’s.
We have to do things right to ask for 87.1-87.9 Mhz with 1-2 miles of Album Rock quality Stereo FM. And to do it up right we’re thinking of apartment dwellers who can’t put up an outside antenna.
When we finalize the field strength I will test a pre set transmitter to see that I’m getting out 1-2 miles (with the experimental license of course). Hopefully this will go great and the next phase can be done which is the final submission to the FCC with proper data to show the results and lack of interference when done responsibly.
ATTENTION ALL BROADCAST ENGINEERS HIERED TO KILL HOBBY RADIO
The New proposal of 87.1-87,9 Mhz will assure no interference can be caused by hobbyists looking to make FM Radio more diverse to listen to. Your precious Rap and Top 40 will be there for years to come for the teens and tween folks. Adults who want a better future for Radio will benefit from our hard work.
You know, you had me there until your last comments. And the sad thing is that they weren't necessary at all.