For FM they could set a power and HAAT limit, thats how they do it for full powers.
RE: test report.....why can't I access this page?
Mark
Already traveled that road. Back in the good ol' days when it was still EBS, we monitored at 10,000 watt AM station 35 miles away that came booming in.
When they changed over to the new improved EAS system control of the State plan was handed over to Minnesota Public Radio, who of course has stations all over the state. So their stations became the stations to monitor.
That was when we discovered reception was marginal at best with the old receiver/antenna. So we upgraded to the latest and greatest and I experimented with antennas until I came up with the dipole, cut to frequency.
Well, the stations we're suppose to monitor eventually put translator stations right here in town! I contacted the EAS coordinator at MPR and got the OK to monitor the local translators instead. Turned out that their translator systems weren't the best (oddly their own translators had trouble receiving their signal over the air from 60 miles away to retransmit). Not to mention with low power and troubles keeping the translator signals on the air at all, we went back to the original plan.
TIB
I'd try a beam antenna and that should help. One with High gain.
First thing I tried was directional yagi or beam antennas. Picked up far too much interference, crosstalk, multipath, etc.. etc.. Lots of lo band FM between us and who we're receiving, not to mention the studios are in an industrial comples surrounded by noisy things.
The dipoles turned out to be the best compromise -- letting me get the stations to monitor -- barely -- and be able to not pick up most of the trash.
Probably doesn't help that our building has a metal roof.
TIB
yeah, I got something like "you don't have permision to access this page". Almost as bad as being over at HB. LOL.
TIB
Go to https://apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
On that form, enter PG2 in the field for the Grantee Code, then scroll to the bottom of the form and click on Start Search.
A new page will open showing several choices. Look for PG2-TDA123GGT in the FCC ID column. There are two choices (2nd and 3rd rows).
The 3rd row links to the original test data. Click on Detail to see items included in the filing.
In that list click on Test Report to see the data (72 pages).
So the testing for the BVE transmitter was done in 2013 right in Denver. Gives exact address.
Passed without modification.
Still think Tim should inform the test facility of his findings. I would myself as the RSS-210 IC test was done there too but I'm not the engineer with the evidence.
Mark
Why not just monitor another station that has better reception of the primary?
In Texas we have LP-1, LP-2, NWS, and TSN to monitor for EAS. Our LP-1 and 2 were changed to other stations, our sister FM actually and the LP-2 went to WBAP. In our case the sister FM monitors the disginated LP-1 and 2 and is much stronger at our location. Local weather always comes through the NWS, National stuff comes off of TSN or the LP-1.
I didn't know what the OP link was for. I had already read the 72 page certification report for the BV transmitter. I just used Goggle and tyled in "fcc certification....." with the certification number on the transmitter. Took me right to it.
I suspect that a carefully adjusted/calibrated unit is sent in for certification. I would assume a manufacturer of such devices would own their own FIM and be able to determine, even roughly, if their device should pass before sending it in. I have no evidence of this of course, except for the dramatically different test results. But if you were a manufacturer hoping to get certification and spending thousands of dollars to obtain this certification, wouldn't you be sure that the unit you're sending for testing was at least in the ballpark? But it's hard to get $300 for a Part 15 transmitter that only goes a couple hundred feet, or maybe through a house.
This would remain undiscovered until either a complaint to the FCC was followed up on and they actually tested a unit or two from a consumer source, or some meddling guy like me discovered the discrepency.
I note that other similar tests reported on some sites generally are using units from the manufacturers or distributors. At least, that's what the test reports say. My guess is they'd send units they expect to be legal.
TIB
The metal will live on...
As Bob of Mram 1500 pointed out a while back, the metal roof on my home would make a decent ground plane for a 3 meter stick on the AM BCB.
Unfortunetly that same metal roof kills reception in the house on fm, a little attenuation on AM/SW and forget T.V., that's not gonna happen with an indoor antenna.
And to make matters worse, this house we are renting is basically a mobile home in the middle with rooms added on around it. Yep, the original aluminum siding was left on the mobile home when the rest of the house was built. Imagine running into metal when you are trying create a feed through hole in a wall for coaxial cable.
You either tear up a drill bit or drill through the floor to feed a cable to the outside.
I have a dipole made up for 11 meters CB, i had forgotten the odd pattern a dipole creates when transmitting, it was close to the metal roof, Man it did not like that one bit lol.
If i can get some help raising that dipole before the snow flies, it just might end up in a tree.
RF is a funny thing.
Trivia:
Title to this post is a reference to what musical comedian/actor?
Barry of BBR WorldWide
We are the vanquished foes of the metal.
Love Tenacious D.