Questions tagged [transmitter]
The transmitter tag has no usage guidance.
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Will a LPF filter on the transmitter prevent CW key clicks?
Reading about key clicks, it would seem that they are primarily caused by the fact that the square wave of turning the key on and off must, by definition, have higher frequency harmonics, which sound ...
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Range of superheterodyne transmitters with low IF
As I understand it, the last mixer stage in a superheterodyne transmitter outputs the desired signal, an image of the signal, and the LO frequency. But a non-tunable RF filter is usually responsable ...
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How do radio jammers work?
I just want to prefix by saying I asked where to post this question on meta and no one was 100% sure but this seemed to be the most likely fit so please tell me if this is off topic and where I should ...
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Construction details for an HF Transceiver output power splitter
I have a requirement to feed two HF power amplifiers with one HF radio transceiver, maximum input power is about 400 W, is it possible for someone to post an answer with schematic and construction ...
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How to convert device with Monopole antenna to Directional/Dipole antenna?
I'm trying to increase the transmission range of a stationary wireless microphone toward its receiver by connecting a yagi antenna. Aside from the antenna sticking out of the top, I don't know where ...
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How to create FM Radio Mesh
What (devices transmitters, receivers and transceiver) do i need to create a fm radio mesh, instead of using a single transmitter with big antenna, i want to build fm transceiver mesh radio to cover ...
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Problems with the Droitwich transmitter
Does anybody know what is up with the BBC transmitter at Droitwich in the UK, specifically the Radio 4 Longwave broadcast on 198kHz?
It's been reporting intermittent faults for a while, and was off ...
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Does ERP power depend on transmitter duty cycle?
I’m building a transmitter and I’m trying to stay under the ERP power limit of my country , which is 0.5 Watt at the frequency I’m working on .
I was thinking about increasing the transmission range . ...
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Would a transmitter similar to "The Thing" be legal on ham bands in the US?
The Thing was a listening device used by the Soviet Union to eavesdrop on US government officials. It was basically an AM transmitter if I understand correctly, but it required another transmitter on ...
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Does an RF amplifier allow us to receive a signal from further away?
From my understanding a RF amplifier boosts the transmission power of your antenna, this will in turn give you a higher gain.
However I've read that this only will give you a further "...
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How to transmit computer audio to a wireless microphone receiver? [closed]
I'm currently trying to broadcast my computer's audio output to a wireless microphone system receiver so that I can accompany my school's coming presentation with music. The frequency range is 480-598 ...
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How do businesses develop and test amateur radio products in the US if you cannot be paid for amateur radio use?
Certainly there are companies in the US (like Kenwood) that develop HAM products that transmit. For development and QA they would likely need to test the product outside of a Faraday cage.
How can ...
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Reasons for an antenna tuner at the transmitter other than transmitter protection?
An antenna tuner colocated with the transmitter may be required to prevent transmitting into an SWR higher than the allowed specification for the transmitter, or if the transmitter might overheat or &...
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multiple pcb trace antennas in the same design. Bad idea?
Since time is money and my PCB home making skills are not the sharpest, I would rather fit my PCB design with two unbalanced antennas (no balun, just impedance matching parts, for 315 / 433 MHz) for ...
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Is it beneficial to boost the transmit power from a transmitter past 2W around 2.4GHz?
I have a ready-made transmitter that outputs 2W of RF power at 2.4GHz carrier frequency (I'm trying to transmit TV using DVB-S2) into the antenna, and I was wondering if it made sense to add a power ...
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