Schematic diagram and parts list to build an RF Modulator?

Schematic diagram and parts list to build an RF Modulator Should be easy to read and clearly marked as to parts list Asked by newbie2651431 54 months ago Similar questions: Schematic diagram parts list build RF Modulator Consumer Electronics.

Similar questions: Schematic diagram parts list build RF Modulator.

Depends on several factors well..you would have to be more specific for me to give you an actual circuit diagram. What frequency band will you be using it for? Do you need a specific modulation freuquency?

What is the application of the circuit? What sort of noise tolerance do you have? You will need to address these issues first before designing an RF modulator.

However if you would like a VHF/UHF modulator I found the following website which gives you a good guide towards building one. members.tripod.com/~petlibrary/rfmod.htm" rel="nofollow">members.tripod.com/~petlibrary/rfmod.htm Sources: members.tripod.com/~petlibrary/rfmod.htm" rel="nofollow">members.tripod.com/~petlibrary/rfmod.htm .

I am unable to post graphic data from Mturk, but have found a clearly marked page on this microwaves101.com/encyclopedia/pulsedRFb... the breadboard drain-pulsed amplifier described here and you will have a useful piece of test equipment for your microwave laboratory, for very little cash, you cheapskate! It provides up to 20 dBm peak power, and operates from 2 to 20 GHz, when driven by a laboratory sweep oscillator and a pulse generator. Why would you build your own modulator when a basic sweeper provides this function?

Our modulator is much more versatile than the cheesy modulation function that is built into a $50K synthesized sweeper, and it will only cost you a couple of bucks! We'll give you faster rise/fall times, and shorter pulse widths than Agilent does! Here's a clickable outline of this page:Choosing an amplifierBuilding the breadboad modulator A word of caution on the terminating resistorTesting the breadboard modulatorNASA takes over the project (some great hardware photos!) Measured data Oscilloscope measurements with detector Sampling scope measurements Spectrum analyzer data On/off isolationMuch of the material on this page was contributed by Justin, Wayne, Romeo, and Greg of NASA, who took an idea they got from Microwaves101 and made it into real hardware.

Thanks guys, especially for all of the different data! Choosing an amplifierThe heart of the Microwaves101 breadboard pulse modulator is an amplifier that you turn on and off by pulsing its drain bias voltage. There are tons of amplifiers out there that you could use to create a breadboard modulator.

We have two suggestions (from based on availability (free! ), wide bandwidth, and pretty good power. The HMC462 and the HMC463 are marketed as low noise amplifiers.

Click on the links below and we'll take you to their data sheets. Both are surface-mount products, so you don't need to worry if you don't have a wire bonder at your disposal. If you ask them nicely, ttite will supply you with some free samples of either amplifier mounted on a connectorized evaluation board, all built up.

Ttite has already done the heavy lifting for you. However, you have to fill out an annoying request sheet before you get any free parts from these MMIC misers. Tell them the Unknown Editor sent you!

HMC462LP5HMC463LP5Here's pictures of the two choices, mounted on ttite-supplied evaluation boards. The pictures are not to scale, the amplifier packages are the same size. Note the nice heat sinks on the backsides, and well-wetted RF connector solder joints.

Ttite thought of everything... except they assembled the HMC463 with one of the tantalum capacitors backwards (it has been fixed in the photo). Obviously they don't test this stuff before they ship it! Sources: http://www.microwaves101.com/encyclopedia/pulsedRFbreadboard.cfm .

1 stressman, regarding your answer "depends on several factors":Yes, you guessed it, the application IS for a channel 3/4 RF modulatorto port DVD A/V RCA Connector output to an F-Connector/Coax input. I looked at that page you recommended and only have one or two questions:1) Can this be made more compactly (fewer parts or better LSI elements)?2) How would you have designed it differently (more efficient, lower power requirement, etc. )? Chomping on bit.

Thanks! .

Stressman, regarding your answer "depends on several factors":Yes, you guessed it, the application IS for a channel 3/4 RF modulatorto port DVD A/V RCA Connector output to an F-Connector/Coax input. I looked at that page you recommended and only have one or two questions:1) Can this be made more compactly (fewer parts or better LSI elements)?2) How would you have designed it differently (more efficient, lower power requirement, etc. )? Chomping on bit.

Thanks!

2 stressman, regarding your answer "depends on several factors":I re-reviewed that schematic and didn't see input for audio, only video. It seems I need to specify that the Circuit I seek is for running two inputs,one audio and one video, both RCA connectors into the modulator and gettingthe one output via F-connector/coax to said TV input same type.Okay. Hope I was more specific.

Nubee .

Stressman, regarding your answer "depends on several factors":I re-reviewed that schematic and didn't see input for audio, only video. It seems I need to specify that the Circuit I seek is for running two inputs,one audio and one video, both RCA connectors into the modulator and gettingthe one output via F-connector/coax to said TV input same type.Okay. Hope I was more specific.nubee.

3 awarulz, regarding your answer "I am unable to post graphic data from Mturk, but have found a clearly marked page on this ":Woah! It was for an RF modulator to connect a DVD to an old style TV, not a rocket-science leveldevice! And you did guess right: lack of funds is a great motivator.So?

Now what? Newbee .

Awarulz, regarding your answer "I am unable to post graphic data from Mturk, but have found a clearly marked page on this ":Woah! It was for an RF modulator to connect a DVD to an old style TV, not a rocket-science leveldevice! And you did guess right: lack of funds is a great motivator.So?

Now what?newbee.

Need diagram showing connections for Cable Box, RF Modulator, TV w/o A/V inputs and DVD Recvorder.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.