• Get involved.
    We want your input!
    Apply for Membership and join the conversations about everything related to broadcasting.

    After we receive your registration, a moderator will review it. After your registration is approved, you will be permitted to post.
    If you use a disposable or false email address, your registration will be rejected.

    After your membership is approved, please take a minute to tell us a little bit about yourself.
    https://www.radiodiscussions.com/forums/introduce-yourself.1088/

    Thanks in advance and have fun!
    RadioDiscussions Administrators

whole house fm transmitter

D

Dr_Johnnie_Fever

it's a little grey box sold on ebay and at http://www.wholehousefmtransmitter.comI have emailed them and they never emailed me back.I am looking for someone who has one and could provide me with the FCC ID Number for part 15 certification
 
Dr_Johnnie_Fever said:
it's a little grey box sold on ebay and at http://www.wholehousefmtransmitter.comI have emailed them and they never emailed me back.I am looking for someone who has one and could provide me with the FCC ID Number for part 15 certification
Click to expand...
I have one. I bought it off eBay, and I presumed that it was FCC Certified. Unfortunately, it isn't. -- Jason
 
That is good to know before i spend that kind of $$$. I have been Busted before for 200mW ERP on FM so i need to use only type certified transmitters from now on.I now own a Hamilton for AM and a X-File XFT40 for FM. Both have FCC ID's :)
 
Dr_Johnnie_Fever said:
That is good to know before i spend that kind of $$$. I have been Busted before for 200mW ERP on FM so i need to use only type certified transmitters from now on.I now own a Hamilton for AM and a X-File XFT40 for FM. Both have FCC ID's :)
Click to expand...
I also have a Panaxis Productions www.panaxis.com ACC100 Part 15 FM transmitter, which is FCC-Certified. It is a monaural transmitter and sounds very good, but at ground level its effective range is no more than about 50 feet using a Walkman AM/FM receiver. Beyond that the signal gets noisy.Panaxis Productions claims a range of up to 300 feet (which I don't doubt), but that presumes that the transmitter is mounted well above ground. -- Jason
 
i was actually looking into Landmark FM tx's. i emailed them and they said they could sell me a part 15 fm transmitter that features 600 ohm balanced inputs. Built with 1% tolerance components in a metal anodized case. Freaking Transformer balanced inputs!!! I could not beleive it, and only $479.00 + Shipping. Does all 200 Channels in Mono or Stereo.I think Decade Has a little competition to their MS-100 :)Here are Spec'shttp://landmarkfm.com/s-specs.htmand Trannyhttp://landmarkfm.com/S-seriesfull.jpg
 
FCC ID For the Landmark is STK-FM350 it is listed on the FCC site :)
 
Dr_Johnnie_Fever said:
FCC ID For the Landmark is STK-FM350 it is listed on the FCC site :)
Click to expand...
A little online research shows that FCC ID STKFM350 applies to something other than the equipment you linked to (see http://landmarkfm.com/others.htm). It is an accessory for a computer.The system you linked to shows that a standalone tx, power supply and separate dipole antenna are included. Most likely it is not Part 15 certified -- if that is important to anyone considering it.//
 
this transmitter has a unique design. it's made and was certified with modules. A RF Deck and the Audio Deck. the modules are switchable. Ie: Balanced pro in's or RCA unbalanced in's etc.the one certified and the one they sell for part 15 has a wire antenna directly attached to unit. beware the ones sold by "gear123" on ebay are the high powered non certified versions.
 
and yet our Government has nothing better to do than to harass the good Reverend
over a few tenths of a milliwatt. Sad! :-[
 
whats the legal limit on whole house transmitters? Obviously the higher the antenna the better,but we still run into the problem with the FCC if its too loud or interferes.I don`t want to be in trouble
 
Fordman said:
whats the legal limit on whole house transmitters? Obviously the higher the antenna the better,but we still run into the problem with the FCC if its too loud or interferes.I don`t want to be in trouble
Click to expand...

Here are the FCC Part 15 FM rules:

http://alphazee.webstrikesolutions.com/djrockdotfm/fccfm.htm

Part 15 FM compliance is determined by field strength rather than output power. The limit is 250 microvolts/meter at a distance of 3 meters. -- Jason
 
//Note to self: In the future, read the SECOND page before replying!!! -Grrrradio

As I understand it, the FCC defines FM Part 15 legality not by effective radiated power, but by field strength at a given distance from the antenna. It's 250 microvolts per meter at three meters from the antenna, which, if I'm doing my math right, translates to something like 48 dBu. (For those unfamiliar with signal strength numbers, think of a 100-kW station from a city 75 miles away, or a fully loaded 6kW/100m Class A station from 35 miles or so.)

Car receivers will be able to deal with this quite nicely, but this is the point where even the best store-bought mini-boomboxes start to require that the antenna be positioned "just so", and on a Walkman? Good luck! I don't know what amazes me more... that these Part 15 devices can do anything useful at all within the bounds of such regulations... or that the FCC gives a tinker's damn about some guy whose fringe 48 dBu Part 15-quality signal goes 300 feet instead of 10. (We pay tax dollars for this?) I'd rant some more about it, but I'd probably talk my way right into Guantanamo ;)
 
Status
This thread has been closed due to inactivity. You can create a new thread to discuss this topic.


Back
Top Bottom