I like the fact that it's a "portable and delicate design".
At least it has a real connector on it, unlike the antenna provided with the WholeHouse 3.0 transmitter.
Tim in Bovey
It will work on the Older SainSonic AX-05B (Before the change to TNC) and the FailSafe CZH-05B). I don't know about the Ramsey however. If we ever get extended part 15 and the transmitters are allowed a BNC connector this antenna is a good replacement. I notice it was tuned for 98 Mhz. I did watch a video about the SainSonic AX-05B and I do remembe them saying the antenna that came with it was best tuned to 98 Mhz. I doubt you'll fund a blank frequency anywhere near that however. I'm at least a couple of megs lower than 98 Mhz. FMuser does have some good stuff however. Just be careful and keep the TX's down man. Their CZH T-200 and the Signstek CZE-T200 can be tuned down to meet part 15 rules. Note the range of 1mW and 10mW settings. Although I don't know the pre emphasis on it so I never bought that transmitter. The reviews on Amazon however was quite good and I like the 150 fT setting. There is also the 10 fT setting.
If you put this on a certified transmitter it will probably make it an illegal transmitter. They seem to rely on really crappy antennas to keep their signal down to level. Any improvement will likely be over the limit and would certainly cancel their certification.
You just don't know. If we "assume" that a certified transmitter is at or near the legal limit, doing anything that increases it's range will make it illegal. You *cannot* set a transmitter's output based in mW settings. Can't be done. Even a small change in antenna can make a substantial differente in field intensity. What would be the point in putting on an antenna that increases range then have to turn down the power to keep it legal?
Tim in Bovey
True enough. As Rich has also advised a certified transmitter is only "certified" based on the manufacturer's antenna.
Changing the antenna makes you the culpable party responsible for field strength.
There are two ways I know of to tread into an antenna change while guarding the field strength...
1.) watching a spectrum analyzer;
2.) watching a quality S-meter on an FM receiver.
With my C.Crane FM2 I viewed the spectrum analyzer at a given distance, noted the reading, then clipped on my Mid-Fed L Antenna and observed the field strength drop by 2 dBu. But by having horizontal + vertical polarity the signal stability within its range is much improved; multipath disturbance virtually eliminated. The range of the signal is not enlarged.
Actually I couldn't do this by S-meter, because the meter on my Grundig Satallit 750 hangs at "4" across the entire FM dial.
This is the same antenna my SainSonic AX-05B uses now. Only difference is that wen it used the old BNC connecor the antenna would constantly tip over. That was one reason that they now use the TNC connector in their new transmitter. So if your transmitter is -48dbm your legal with this antenna. That is around 15 nanno watts. So this antenna is legal if you use the same amount of power as the new revised unit. I'm sure it would work nice on a Ramsey if you get the power to -48dbm. A sure fire way to meet FCC rules now that you know its the same antenna SainSonic uses. Do some reasurch FM user also sells their version of the famous transmitter. I don't know if it has the -48dbm on it but since SainSonic is modified CZH you can bet they took the same rubber duck and changed the connector not that hard to do.
I guess that everyone but Tim missed my sarcasim.
I think I get it anyway. Rubber Ducky and High Gain in the same sentence does not mix.
The specs say: 1mW to 5W.
But Part 15 FM typically has only 14 nW output.
It's delicate.
The antenna can be used outside the USA I get that.
Use antennas designed for your country.