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hi all,
i want to make a broadband antenna wire 1.5 meter, so it's can have VSWR less than 3:1 at Frequency 30 MHz - 90 MHz but how to make it real, because i don't have enough experience on it, is there anyone can help me, please ?? :smile:
Re: L-C matching Network
dear Mr. Goldsmith
thank you for reply my topic, my avarage power is 20 watt, and i have used nine toroidal for binary value of inductance, 0.25uH, 0.5uH, 1uH, 2uH, 4uH, 8uH, 16uH, 32uH, and 64uH., and i plan to select L-C matching network, because when i only use L...
hello all...
i need help, i need your suggestion, please suggest the available transistor for HF PA design at 3 MHz - 30 MHz
with characteristic: gain flat or linear from 3 MHz - 30 MHz
application:radio HF
Re: L-C matching Network
yes, i have measurement data, that's data consist of HF , and value of capacitance because antenna is too short for 3 MHz - 30 MHz, but i don't know what i can do from that data?
thank you very much for ur reply, before
hello all...
i'm want to use L-C matching Network for Automatic Antenna Tuner but i'm confused for value of inductance or value of capacitance, how to determined for that's value? for example, i use an antenna with dimension length 1.5 M with frequency resonant at 50 MHz, my question is for...
hello all...
i need help, i need your suggertion, please suggest the available transistor for HF PA design at 3 MHz - 30 MHz
characteristic: low power or high power...high gain
application:radio manpack
Hello to all,
I am working on a project for Automatic Antenna Tuner for HF, i want to know how to determine value of inductance and value of capacitance if i use L-match network with 1.5 Meter antenna whip.
I have found some information about the value but I would appreciate any additional info...
thank you for your reply, i'm consider that i have to use some capacitors, because i belive that although that antenna usualy capacitive for 1-30 MHz, but it's not make me to not use some capacitors, i have looked an automatic antenna tuner for hf manpack radio or for vehicle, both of device use...
thank you very much for your attention and your suggestion, but can u give me a specific reference for use a servo motor to add or remove more windings because i'm a beginner fot that application
thank you
---------- Post added at 11:09 ---------- Previous post was at 10:54 ----------...
Hi, Im a student and we have a project where we are designing an Automatic Tuning Unit (ATU) for HF (3-30 MHz) with an antenna whip 1.5 Meter. I am in charge in designing the ATU. Basically the ATU would have to good VSWR in each HF frequencies. i use 8 toroids with which have different value of...
that book free or not because i can't find it at google may be u can give its reference website so that it's make me easy to download and find it, thanx a lot before
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