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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Re\:\s+MF\s+variometer\s*$/: 7 ]

Total 7 documents matching your query.

1. LF: Re: MF variometer (score: 1): Author: "Gary - G4WGT" <[email protected]>; Date: Sun, 13 Jan 2013 11:14:05 +0100; Hi Stefan, LF, Yes, I do have to adjust my variometer for MF & LF depending on the weather/soil being wet or dry. 73, Gary - G4WGT. MF, I've just finished the remote tunable variometer for MF, https:; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00022.html (9,678 bytes)
2. Re: LF: Re: MF variometer (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sun, 13 Jan 2013 17:17:49 +0100; Hi Gary, Am 13.01.2013 16:51, schrieb Gary - G4WGT: Hi Stefan, I have thought about LF & MF antenna coil switching but I am very wary about the very high voltages on the LF coil due to my short verti; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00034.html (11,932 bytes)
3. Re: LF: Re: MF variometer (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Sun, 13 Jan 2013 16:20:05 +0100; Hi Albert and Gary, Yes, here it is the same. The detuning due to wet soil is higher than on LF. Also the relative rise of the resistive losses are higher than on LF. It can make up to 3 dB here. Now; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00220.html (10,464 bytes)
4. Re: LF: Re: MF variometer (score: 1): Author: Albert W <[email protected]>; Date: Sun, 13 Jan 2013 11:28:15 +0100; Hello Stefan es Gary, The same here depending on weather conditions and of course frequency change, using a relative small variometer (DC-motor adjustable from the shack) in series with the fixed L.; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00268.html (9,092 bytes)
5. Re: LF: Re: MF variometer (score: 1): Author: "Gary - G4WGT" <[email protected]>; Date: Sun, 13 Jan 2013 16:52:44 +0100; Hi Stefan, I have thought about LF & MF antenna coil switching but I am very wary about the very high voltages on the LF coil due to my short vertical antenna. At the moment I have 3 screw connectors; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00330.html (11,345 bytes)
6. Re: LF: Re: MF variometer (score: 1): Author: "Markus Vester" <[email protected]>; Date: Sun, 13 Jan 2013 16:50:09 +0100; Hi Stefan, having the LF coil in parallel to the MF one will not increase the losses at MF. But the open switch will have to withstand a high voltage when operating LF, which is not trivial. I had pl; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00452.html (12,725 bytes)
7. Re: LF: Re: MF variometer (score: 1): Author: "Gary - G4WGT" <[email protected]>; Date: Sun, 13 Jan 2013 17:59:04 +0100; Hi Stefan, I think that due to the difficulties in switching the 2 bands I will change the connectors over to 4mm banana plugs/sockets. I will still have to go outside & physically change them over b; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00734.html (12,869 bytes)

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