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Search found 21 matches
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Topic: Please Help me!....
Fission7x

Replies: 1
Views: 4314
PostForum: Schematics - help and ideas   Posted: Wed Jul 27, 2005 1:57 am   Subject: Please Help me!....
Here are a bunch of links, maybe they will help:
[url=http://www.commlinx.com.au/transmitters.htm]Links
Topic: best antenna?
Fission7x

Replies: 2
Views: 5369
PostForum: Antennas   Posted: Sat Jun 25, 2005 5:38 pm   Subject: best antenna?
A lot of people get good perfomance from dipoles.
They are easy to build and easy to tune.
Topic: Win a free RDS MAX 3.0!
Fission7x

Replies: 21
Views: 35224
PostForum: RDS Encoders   Posted: Tue May 24, 2005 3:01 am   Subject: Win a free RDS MAX 3.0!
There's got to be 7!
Topic: Building FM AMP from Motorola 13414500 module???
Fission7x

Replies: 16
Views: 19413
PostForum: Schematics - help and ideas   Posted: Wed Apr 20, 2005 4:12 am   Subject: Re: Did you get it working?
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 woul ...
Topic: Amplifier Input Power...
Fission7x

Replies: 4
Views: 5134
PostForum: FM transmitters   Posted: Sun Apr 10, 2005 2:07 am   Subject: Amplifier Input Power...
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?
Topic: Amplifier Input Power...
Fission7x

Replies: 4
Views: 5134
PostForum: FM transmitters   Posted: Sat Apr 09, 2005 6:34 pm   Subject: Amplifier Input Power...
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 ...
Topic: Antenna Cable
Fission7x

Replies: 8
Views: 9470
PostForum: Antennas   Posted: Fri Apr 08, 2005 3:49 am   Subject: Antenna Cable
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 take ...
Topic: Building FM AMP from Motorola 13414500 module???
Fission7x

Replies: 16
Views: 19413
PostForum: Schematics - help and ideas   Posted: Wed Apr 06, 2005 10:38 pm   Subject: Building FM AMP from Motorola 13414500 module???
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 c ...
Topic: Building FM AMP from Motorola 13414500 module???
Fission7x

Replies: 16
Views: 19413
PostForum: Schematics - help and ideas   Posted: Wed Apr 06, 2005 10:11 pm   Subject: Building FM AMP from Motorola 13414500 module???
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: ...
Topic: SWR meters, some usefull facts
Fission7x

Replies: 4
Views: 6640
PostForum: Antennas   Posted: Wed Apr 06, 2005 9:47 pm   Subject: SWR meters, some usefull facts
So is there a way, or even a need, to measure SWR for a transmitter putting out 250 mWatt?
Topic: My Station
Fission7x

Replies: 14
Views: 13708
PostForum: Users share experience...   Posted: Wed Mar 09, 2005 1:26 am   Subject: My Station
Good looking setup!
You're getting 5 miles out of a dipole taped to the window?! WOW
Topic: Please Help Me With This Diagram!!!
Fission7x

Replies: 1
Views: 3861
PostForum: Schematics - help and ideas   Posted: Mon Feb 28, 2005 1:22 am   Subject: Please Help Me With This Diagram!!!
Reuben,
Sent you one!
Topic: student needs advice designing fm xmitter
Fission7x

Replies: 3
Views: 3250
PostForum: Schematics - help and ideas   Posted: Sun Dec 05, 2004 2:00 am   Subject: student needs advice designing fm xmitter
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 ...
Topic: Quarter wave antenna
Fission7x

Replies: 0
Views: 3076
PostForum: Antennas   Posted: Tue Nov 23, 2004 5:08 am   Subject: Quarter wave antenna
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 ...
Topic: Help! Old PCMAX won't fit in my computer.
Fission7x

Replies: 4
Views: 5500
PostForum: PCI MAX transmitters   Posted: Sun Aug 08, 2004 6:52 pm   Subject: Help! Old PCMAX won't fit in my computer.
http://absolutegti337.vwmafia.net/images/random/no_rice_inside.gif

Must be an empty box!
Topic: Looking for Transmitter Enclsoure
Fission7x

Replies: 1
Views: 3775
PostForum: FM transmitters   Posted: Sat Jul 10, 2004 11:55 pm   Subject: Looking for Transmitter Enclsoure
Where can I get an enclosure like the one the Cyber Max LCD is mounted in?
Topic: Half-Wave Antenna Questions...
Fission7x

Replies: 5
Views: 6900
PostForum: Antennas   Posted: Fri Jul 09, 2004 10:18 pm   Subject: Re: Double edged Sword question
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! ...
Topic: Half-Wave Antenna Questions...
Fission7x

Replies: 5
Views: 6900
PostForum: Antennas   Posted: Fri Jul 09, 2004 3:13 am   Subject: Re: Double edged Sword question
r u posting a lecture or are you really sincere in acquireing knowledge?

Well allow me to include one important factor that seems to be a variable..It is called 'SKIN' effect o ...
Topic: Half-Wave Antenna Questions...
Fission7x

Replies: 5
Views: 6900
PostForum: Antennas   Posted: Thu Jul 08, 2004 2:20 am   Subject: Half-Wave Antenna Questions...
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 fa ...
Topic: Create FM Transmitter from FM Modulator??
Fission7x

Replies: 2
Views: 4281
PostForum: FM transmitters   Posted: Sun Jul 04, 2004 7:51 pm   Subject: Create FM Transmitter from FM Modulator??
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 fe ...
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