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

Total 9 documents matching your query.

1. Re: LF: TRANSVERTERS (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Tue, 6 Nov 2012 18:27:42 +0000
RIG/TRANSVERTER HEAT I have noticed when running a Transceiver at low power for Transverter or other use the Transceiver PA gets very HOT so it would appear that this is an inefficient approach excep
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00142.html (10,857 bytes)

2. Re: LF: TRANSVERTERS (score: 1)
Author: "Graham" <[email protected]>
Date: Wed, 07 Nov 2012 00:29:55 +0100
LOL Well I work on a 1:400 efficiency for my Mf Ae , so to radiate 1 watt erp , that's 400 watts carrier power to the Ae, I can do the same on 7 meg with 500 mW to the same Ae .... dont forget 'we' h
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00209.html (16,928 bytes)

3. Re: LF: TRANSVERTERS (score: 1)
Author: "Graham" <[email protected]>
Date: Wed, 07 Nov 2012 01:23:35 +0100
Happy days are here again : ) -15 , looks like the valve is bedding in nicely ! G.. 2012-11-06 23:54 SM6BHZ 0.475699 -15 0 JO57wq 0.5 WD2XSH/17 FN42pb 5768 291 2012-11-06 23:38 SM6BHZ 0.475699 -15 0
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00327.html (24,720 bytes)

4. Re: LF: TRANSVERTERS (score: 1)
Author: M0FMT <[email protected]>
Date: Tue, 6 Nov 2012 21:56:47 +0000 (GMT)
Hi Graham Thought that WSPR stuff was supposed to be ultra low power? How come its blowing rigs up? Could it be that the Wisper is really a blooming great shout and we have a misnomer which is an adv
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00462.html (15,218 bytes)

5. LF: TRANSVERTERS (score: 1)
Author: "mal hamilton" <[email protected]>
Date: Tue, 06 Nov 2012 17:46:20 +0100
RIG/TRANSVERTER HEAT I have noticed when running a Transceiver at low power for Transverter or other use the Transceiver PA gets very HOT so it would appear that this is an inefficient approach excep
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00503.html (9,115 bytes)

6. Re: LF: TRANSVERTERS (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Tue, 06 Nov 2012 18:06:38 +0100
Mal, If you're generating 500 kHz with a HF TRX then this can happen. I guess the output transformer of the PA appears almost like a short cut for the output FETs, so the losses will be relatively hi
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00610.html (10,658 bytes)

7. Re: LF: TRANSVERTERS (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 07 Nov 2012 00:42:36 +0100
Am 07.11.2012 00:28, schrieb Graham: [...] It all stems from the race to dB's , as you can see now Gus has a decode at -20 dB across the pond , where Stefan, just a new boy to 500 has only -23 dB , b
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00986.html (23,988 bytes)

8. Re: LF: TRANSVERTERS (score: 1)
Author: Stefan Schäfer <[email protected]>
Date: Wed, 07 Nov 2012 02:30:06 +0100
G.., Indeed! ;-) Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2012-11-07 01:24 DK7FC 0.475761 -13 0 JN49ik 1 WD2XSH/17 FN42pb 5927 294 2012-11-07 01:24 DK7FC 0.475762 -26 0 JN49ik 1 WE2
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg01043.html (29,717 bytes)

9. Re: LF: TRANSVERTERS (score: 1)
Author: "Graham" <[email protected]>
Date: Tue, 06 Nov 2012 19:59:37 +0100
But what are you sending with the reduced power rig ? SSB ... Normal CW Opera all have low duty cycles and result in low heat build up But if you running at 100% key down sending qrss and the like ,
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg01047.html (12,160 bytes)


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