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Total 5 documents matching your query.

1. Topband: Signal source RF amplifier (score: 1): Author: VE6WZ_Steve <ve6wz@shaw.ca>; Date: Sun, 2 May 2021 18:46:49 -0600; For field testing, Im looking for some ideas for a very small RF amplifier to boost the output from a HCMOS 1.843 MHz oscillator. These oscillators will give me about 20 mW max, but I need a bit more; /archives//html/Topband/2021-05/msg00004.html (6,697 bytes)
2. Re: Topband: Signal source RF amplifier (score: 1): Author: "Tim Duffy" <k3lr@k3lr.com>; Date: Sun, 2 May 2021 21:03:41 -0400; Hello Steve: One possible solution is a Elecraft XG-3 (at 0 dBm) as a start - with a 13 dB amplifier (pretty simple). https://static.dxengineering.com/global/images/instructions/ect-xg3.pdf Greg, W8W; /archives//html/Topband/2021-05/msg00005.html (8,102 bytes)
3. Re: Topband: Signal source RF amplifier (score: 1): Author: GEORGE WALLNER <aa7jv@atlanticbb.net>; Date: Mon, 03 May 2021 09:17:13 -0400; Hello Steve, I have built exactly what you are looking for: a small 200 mW transmitter that can be attached to a drone (including battery). For the "PA" stage a I used a 74HC244 buffer, with all the; /archives//html/Topband/2021-05/msg00007.html (8,375 bytes)
4. Topband: Signal source RF amplifier (score: 1): Author: "Roger Kennedy" <roger@wessexproductions.co.uk>; Date: Mon, 3 May 2021 23:00:47 +0100; Steve, back in the 1970s, when I was too young to drive, I made a 160m handheld transmitter! I built it into an AM Transistor Radio (modified to receive Top Band), and used the Audio amp in it to mod; /archives//html/Topband/2021-05/msg00009.html (7,570 bytes)
5. Re: Topband: Signal source RF amplifier (score: 1): Author: VE6WZ_Steve <ve6wz@shaw.ca>; Date: Tue, 4 May 2021 10:38:50 -0600; Thanks for the info George. I have watched your video.very FB indeed. Using the 74HC244 line driver/buffer as a PA is a great idea. I had heard of this idea before, but never found a circuit. Jim, WA; /archives//html/Topband/2021-05/msg00010.html (10,750 bytes)

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