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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Re\:\s+SWR\s+Bridges\s*$/: 9 ]

Total 9 documents matching your query.

1. LF: Re: SWR Bridges (score: 1)
Author: Laurence KL7 L <[email protected]>
Date: Tue, 1 Nov 2016 22:33:05 +0000
Steve - using the Bird 43 originally with 2-30MHz 1Kw 1000H insert on 475kHz, and then compared it with a 1Kw 1000P 450kHz-2.5MHz insert and maybe (maybe) the 2-30MHz insert was showing low about 10%
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00012.html (18,431 bytes)

2. Re: LF: Re: SWR Bridges (score: 1)
Author: "ik4nmf" <[email protected]>
Date: Wed, 2 Nov 2016 08:16:04 +0100
Hi Laurence, I have tested a 2-30 MHz 1000H slug on my Bird 43 on 475 KHz and he need about 2.2 KW to read full scale on the meter with clean sine wave signal on 50 ohm dummy load. I think that not a
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00013.html (19,057 bytes)

3. LF: Re: SWR Bridges (score: 1)
Author: "Chris" <[email protected]>
Date: Wed, 02 Nov 2016 10:46:40 +0100
Hi Steve, I found a lack of sensitivity with my 1.8 - 160MHz Welz SWR/PWR meter on 630m, so not much good for a few watts, probably OK with high power. I found the best solution was to build one. Chr
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00016.html (10,689 bytes)

4. LF: Re: SWR Bridges (score: 1)
Author: "Steve" <[email protected]>
Date: Wed, 2 Nov 2016 11:12:00 -0700
Many thanks to all of those taking the time to reply to my inquiry. It seems that results vary depending upon what meter is being used but it sounds as though only a few are having reliable / accurat
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00023.html (10,895 bytes)

5. Re: LF: Re: SWR Bridges (score: 1)
Author: M0FMT <[email protected]>
Date: Wed, 2 Nov 2016 19:35:07 +0000 (UTC)
Hi all Adjust your tuned antenna matching transformer to give maximum current in your " L" or "T" antenna up lead. Measure your current using a suitable incandescent light bulb brought to maximum bri
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00025.html (9,710 bytes)

6. Re: LF: Re: SWR Bridges (score: 1)
Author: "Steve" <[email protected]>
Date: Wed, 2 Nov 2016 14:36:57 -0700
Tnx Pete and Marco...yes, I agree that using an RF ammeter to set impedance match, once resonant, is a simple way for those that are without a scopematch. For most LF/MFers however, it is only a matt
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00033.html (11,368 bytes)

7. Re: LF: Re: SWR Bridges (score: 1)
Author: "Michael Sapp" <[email protected]>
Date: Wed, 02 Nov 2016 18:13:36 -0400
Steve & All: One weekend last winter I decided to play around with an Elecraft CP-1 dual directional coupler kit which has 25 and 250 watt power ratings depending on how you build it for 1-30MHz (20
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00034.html (13,470 bytes)

8. RE: LF: Re: SWR Bridges (score: 1)
Author: "Clemens Paul" <[email protected]>
Date: Wed, 2 Nov 2016 23:28:38 +0100
Hi Steve, if you prefer a reliable and accurate inline meter there is a ready to use solution but you have to spend some money. It's the digital vector wattmeter LP100A. http://www.telepostinc.com/ Y
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00035.html (12,904 bytes)

9. Re: LF: Re: SWR Bridges (score: 1)
Author: "Graham" <[email protected]>
Date: Fri, 11 Nov 2016 23:05:32 +0100
Chris , I have the welz 220 swr bridge , its good down to much less than 1 watt and the calibration is quite close , never pushed more than 20 watts through it , always take it out of cct once the sy
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-11/msg00110.html (11,868 bytes)


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