- 1. Topband: Pennant and Flag Questions (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Fri, 14 Jan 2022 11:06:57 -0800
- I have just purchased a very small flat antenna from DX Engineering. I had the idea of using it as a sense antenna to cancel noise. I would put the null on the DX station, and phase cancel the rest.
- /archives//html/Topband/2022-01/msg00086.html (7,099 bytes)
- 2. Topband: Preamp Placement? (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Sun, 16 Jan 2022 07:09:25 -0800
- Do preamps need to be close to electrically small mag loops to maximize SNR from common mode RFI? I would imagine in theory yes, but in application I have no experience to draw from. Thanks, Chris KQ
- /archives//html/Topband/2022-01/msg00091.html (6,921 bytes)
- 3. Topband: Portable Flag Antenna for MF/HF Direction Finding (March 2021 QST) (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Wed, 19 Jan 2022 07:58:02 -0800
- To reference what antenna I have been experimenting with as far as noise canceling check out March 2021 QST (page 33 on the digital edition). Also, I would like to rain proof mine (the ferrite xforme
- /archives//html/Topband/2022-01/msg00120.html (7,739 bytes)
- 4. Re: Topband: Portable Flag Antenna for MF/HF Direction Finding (March 2021 QST) (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Wed, 19 Jan 2022 08:20:00 -0800
- Yea. I am debating on installing it permanently. I am not sure if it is an improvement over a bi-directional loop. It only has one sharp null, but I have not been successful in canceling all QRN only
- /archives//html/Topband/2022-01/msg00121.html (9,090 bytes)
- 5. Re: Topband: pre-amp placement (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Wed, 19 Jan 2022 10:30:27 -0800
- Yes, after asking the question I tried the experiment and found no difference. My concern was common mode pick up before the pre-amp not so much insertion loss. If noise was going to be inserted in t
- /archives//html/Topband/2022-01/msg00123.html (7,846 bytes)
- 6. Topband: Help with SAQ RX (A Little off Topic) (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Thu, 9 Jun 2022 10:23:17 -0700
- Hi guys, I am going to the Azores and will be there until July the 5th. This gives me an opportunity to copy the SAQ VLF transmitter Alexanderson alternator at 17.2kHz. My idea would be to use this d
- /archives//html/Topband/2022-06/msg00000.html (6,220 bytes)
- 7. Topband: Kites? (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Tue, 20 Dec 2022 11:38:27 -0800
- I am wondering what type of kite would produce the most consistent result for a 1/2 wave vertical. I am thinking 1/2 lamda so that I don't have to fuss with a radial field. -- Thanks, Chris Maness __
- /archives//html/Topband/2022-12/msg00101.html (6,282 bytes)
- 8. Topband: Grimeton VLF Christmas Eve Txmsn (score: 1)
- Author: Chris Maness <christopher.maness@gmail.com>
- Date: Sat, 24 Dec 2022 20:58:05 -0800
- Any of you guys copy this or get a recording? I would love to copy the message even if by recording. https://swling.com/blog/2022/12/saq-transmission-scheduled-for-christmas-eve-morning-dec-24th/ --
- /archives//html/Topband/2022-12/msg00135.html (6,668 bytes)
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