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Is it possible get a tension on N connector in RX mode for external preampli for vhf / uhf ?
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Leroy Higgins
You can make your own Bias Tee. See this link: http://www.hayseed.net/~jpk5lad/K5LAD%20Memories/Vols%2031-35/Memories--Vol33.htm
I would build a Bias Tee in a metal box because of noise pickup, or radiation on a transmitter cable. There are more links at the bottom of the above web page link. For a receiver bias tee, a ceramic capacitor would be a good choice. For a transmitter Bias Tee, I would use 3 or 4 ceramic capacitors in parallel to handle the current, and not overheat. A ceramic doorknob for a transmitter cable would be best, if available. 73 Leroy AD6LH
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FOULQUIE antoine
Many thanks for your answers
73 antoine f5bof
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Joe
The MFJ-4119 would be a better choice.
1-450MHz.
On 2/22/2019 8:22 AM, Steve W3AHL wrote:
The MFJ 4116 is only rated to 60 MHz and that's pushing it in my opinion. It's no good for VHF/UHF.
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The MFJ 4116 is only rated to 60 MHz and that's pushing it in my opinion. It's no good for VHF/UHF.
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Perhaps a bias tee in PL259 at the transceiver and than a conversion to N type.
I would guess an N type bias tee would be considerably more expensive than MFJ 4116 at $29.96
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Helmut Wabnig
On Wed, 20 Feb 2019 23:58:00 -0800, you wrote:
helloBuy a BIAS TEE https://en.wikipedia.org/wiki/Bias_tee OE8UWW
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FOULQUIE antoine
hello
i have a question, see the subject please 73 Antoine f5bof
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