PCS-Electronics

Here are a bunch of links, maybe they will help:
Links

A lot of people get good perfomance from dipoles.
They are easy to build and easy to tune.

There's got to be 7!

I am considering purchasing one of these little guys from ebay. They seem pretty cheap for what you get. Fission 7x - did you get yours working? Did you add a filter? How big is your heat sink? I would like to drive mine with a Ramsey FM25B at about 10mW, and I would be happy to get 1W RF out. Any ...

So, my best bet would be to find a broadcast amp that accepted a 250mW (such as the 15W Max Booster) and, depending on the output I wanted, step up from there. Correct?

Many of the FM transmitter amps on the market list a value for power input and most that I've seen use 1 watts, 4 watts or similar. Would there be a problem driving these amps with a 250mw output or lower transmitter?

The catch is I have thousands of feet of 6 & 11, and hardly anytime to take a lunch break let alone shop... Don't forget the click, click, here it comes in the mail method. In the time it takes to post a few notes to a forum, your new coax could be on it's way! You could possibly try the upper ...

These things are linear meaning they waste too much power, probably get quite hot for the mere 2W it produces. Another thing is there is no filter, you'll likely produce harmonics and possibly cause interference problems to your neighbours. I was warned to use a heatsink. Are there any good filter ...

I just bought a Motorola 13414500/09H 9244 broadband amplifier module. http://www.hotboatpics.com/pics/data/2/3925moto-amp-2.jpg Seller claims building a 1 watt FM transmitter amp is as easy as: http://www.hotboatpics.com/pics/data/2/3925moto-amp.jpg Is it really that easy? Seems like there should b...

So is there a way, or even a need, to measure SWR for a transmitter putting out 250 mWatt?

Good looking setup!
You're getting 5 miles out of a dipole taped to the window?! WOW

Reuben,
Sent you one!

If you know a specific frequency, you can try either one of these: The Belkin TuneCast II (~$30us) Or better yet, the C.Crane transmitter (~$70US). There's also an easy mod to boost the C.Crane's output. If you don't know the specific frequency or want to cover many frequencies, I think I remember r...

Now, I know there are much better antennas out there than the one I'm about to propose, but humor me until my roll of RG-213 gets here and I can finish my half wave dipole. Question: What's better: A 1/4 wave "whip" antenna made from a piece RG-213 with both the center conductor and the gr...

Black_Hawk wrote:

Must be an empty box!

Where can I get an enclosure like the one the Cyber Max LCD is mounted in?

Fission7x wrote:This "skin" effect sounds interesting. Where can I go to read about it?

I found a couple of articles on the net about it.
Seems like a hollow radiaiting element is actually better than solid one! Thanks for help!

:lol: r u posting a lecture or are you really sincere in acquireing knowledge? :lol: :roll: Well allow me to include one important factor that seems to be a variable..It is called 'SKIN' effect of Radio Frequency Currents flowing thru a Conductor of various Diameters versus the Frequency of the wav...

I found these formulas somewhere on the net: 492/fo MHz = The length (feet) of a half wavelength dipole in free space. The specifications call for multiplying the above result by a correction factor read from a graph which is based on the ratio of the length of the half-wavelength to the diameter of...

This makes it very dangerous to amplify any of these devices, you will likely radiate into close-by channels and you may get in trouble. Those chips were designed for immediate local area use (a few meters) and are perfect for that purpose, but NOT FOR BROADCASTING! You have been warned! That's jus...