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Total 96 documents matching your query.

1. LF: SV: Re: Narrow CW filter using 32kHz clock crstals? (score: 1)
Author:
Date: Fri, 27 Sep 2002 10:40:29 +0200
Hi You find information on SM5BSZ's site, this is for using 100kHz xtals. I have lot of 59.995kHz pilot xtals and wished to try, but have not succeeded so far. Seems important to have some more elabo
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-09/msg00041.html (10,119 bytes)

2. LF: SV: O copy in Sweden (Intern) (score: 1)
Author:
Date: Fri, 27 Sep 2002 10:35:54 +0200
Hei undrer hvor mange som er aktive på 136kHz i Sverige? 73 Jan-Martin --Opprinnelig melding-- Fra: Johan Bodin [mailto:] Sendt: 26. september 2002 22:32 Til: r
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-09/msg00042.html (8,573 bytes)

3. Re: LF: vicious circlei in German, from DK 8 ND - Resonanzwandlerschaltnetzteilen (score: 1)
Author:
Date: Mon, 28 Oct 2002 09:48:12 +0100
Switching regulator - as a contrast to Switch-Mode type, I suppose he used the wrong German word, since it is most likely he meant the latter expression I have a local power supply beacon on 136.5kHz
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-10/msg00062.html (9,260 bytes)

4. LF: SV: Re: Vacuum tubes on Motherboards... (score: 1)
Author:
Date: Tue, 22 Oct 2002 17:54:09 +0200
Suppose your Hallicrafter had 20kHz bandwidth - as for my S-40A (back in 1960) it might be an argument, but not very important today 73 Jan-Martin LA8AK --Opprinnelig melding-- Fra: Alberto di Bene [
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-10/msg00159.html (8,738 bytes)

5. LF: Re: RE: SPM14 - Selektiv PegelMeßer/Level Meter? (score: 1)
Author:
Date: Tue, 8 Oct 2002 09:30:42 +0200
Hi, It is many different similar instruments, SPM-3, SPM-6...etc, don't really see a reason to pick the most expensive type, as any has a bandwidth of 2.5kHz or lower, and as such will work satisfact
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-10/msg00308.html (9,832 bytes)

6. LF: SV: tube (score: 1)
Author:
Date: Fri, 29 Nov 2002 13:04:17 +0100
Suspect it is sort of fast heated valve 73 LA8AK --Opprinnelig melding-- Fra: hamilton mal [mailto:] Sendt: 27. november 2002 19:58 Til: Emne: LF: tub
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00024.html (8,989 bytes)

7. LF: SV: puzzle (score: 1)
Author:
Date: Thu, 14 Nov 2002 19:03:17 +0100
but it is so easy to delete --Opprinnelig melding-- Fra: hamilton mal [mailto:] Sendt: 13. november 2002 20:31 Til: Emne: LF: puzzle The odd Off Topic
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00186.html (8,520 bytes)

8. LF: SV: Re: RX Frame Aerial for 136kc/s - still experimenting..... (score: 1)
Author:
Date: Tue, 12 Nov 2002 18:17:00 +0100
The centertap for varicap reference is seen connected to coax cable ground, so it does work but I am not certain if it is a point to use actual ground for the frame, it is grounded in the shack via t
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00234.html (9,857 bytes)

9. LF: SV: Re: RX Frame Aerial for 136kc/s - still experimenting..... (score: 1)
Author:
Date: Tue, 12 Nov 2002 16:19:32 +0100
James, But, with 80Hz bandwidth (Siemens D2006 Level meter) or using my FT-902 (500kHz BW) with 74HC4066 converter the background noise peaks considerably on the S-meter when antenna is tuned to reso
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00236.html (12,271 bytes)

10. LF: SV: Re: RX Frame Aerial for 136kc/s - still experimenting..... (score: 1)
Author:
Date: Tue, 12 Nov 2002 13:39:37 +0100
The main loop is 26turns 1x1m - it is still square, Q=150, tuning capacitance 550pF, the coupling loop is 50x50cm 73 Jan-Martin LA8AK --Opprinnelig melding-- Fra: g6tmk [mailto:] Sen
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00239.html (10,413 bytes)

11. LF: RX Frame Aerial for 136kc/s - still experimenting..... (score: 1)
Author:
Date: Tue, 12 Nov 2002 12:16:41 +0100
Hi still experimenting with frame antenna for 136kHz. The attached drawing (20kB) shows almost how it would have been made today, somewhat different from the actual antenna. Experienced that it was n
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00241.html (10,682 bytes)

12. SV: LF: To Ponder over the weekend (score: 1)
Author:
Date: Fri, 8 Nov 2002 13:35:37 +0100
ha ha Yes, you said 25µJ per capacitor..... 73 Jan-Martin, LA8AK --Opprinnelig melding-- Fra: James Moritz [mailto:] Sendt: 8. november 2002 12:52 Til:
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00319.html (11,286 bytes)

13. LF: Re: Re: Re: Siemens D2006 Selective Level Meter/Pegelmesser (score: 1)
Author:
Date: Wed, 6 Nov 2002 08:17:33 +0100
Hi Here is the small 6kB file showing the circuit diagram for the modification. The board "S45035-D5142-.."(Ausgangsteil) has a simple BJT product detector and BFO. The BFO frequency is tuned with 22
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00367.html (11,981 bytes)

14. LF: Attached documents? What is the practice? (score: 1)
Author:
Date: Tue, 5 Nov 2002 16:30:19 +0100
Sometimes it seems useful to attach a file, what is the practice on this reflector? It is a wellknown problem on other reflectors so the SYSOPs have often blocked the possibility I would only attach
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00378.html (9,315 bytes)

15. Re: Re: Re: Re: LF: Siemens D2006 Selective Level Meter/Pegelmesser (score: 1)
Author:
Date: Tue, 5 Nov 2002 11:22:53 +0100
Hi Did I forget to mention that the trimmer cap. board should not be grounded? A dynamic phone insert will suffice, but is somewhat small. Have an integrated amplifier (0.5W) with loadspeaker in the
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00382.html (9,783 bytes)

16. LF: Siemens K2119 (D2119/W3119) Level Test Set200Hz-2,1MHz ? (score: 1)
Author:
Date: Tue, 5 Nov 2002 09:57:21 +0100
Hi My best tool is the K2119, but it is faulty at the moment, and I have to look for some fuses, possibly 160mA mittelträge...., but somebody don't seem to understand why we need fuses any more in No
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00386.html (9,180 bytes)

17. LF: Re: Re: Re: Siemens D2006 Selective Level Meter/Pegelmesser (score: 1)
Author:
Date: Tue, 5 Nov 2002 09:46:34 +0100
Hi The board "S45035-D5142-.."(Ausgangsteil) has a simple BJT product detector and BFO. The BFO frequency is tuned with 2250pF and it is shifted by S4, possibly shifting it 1.85 below and above 100kH
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00387.html (11,671 bytes)

18. LF: VS: Feeding an inverted L-antenna (score: 1)
Author:
Date: Mon, 4 Nov 2002 13:49:44 +0100
Wonder why seems to be a habit use a series coil to tune out the capacitance of the 136kHz aerial, instead of more normal sort of matching - using T- or L-network Below is shown some impedance for a
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00400.html (13,772 bytes)

19. LF: Re: Re: Siemens D2006 Selective Level Meter/Pegelmesser...and W&G SPM-3 (score: 1)
Author:
Date: Mon, 4 Nov 2002 13:37:02 +0100
Hi Interesting thoughts. I would have to check the handbook at home. It is also a problem with overload, and this could be solved partly adding an AGC to the ADD-ON unit. Depends on the IF level how
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00402.html (11,493 bytes)

20. LF: Siemens D2006 Selective Level Meter/Pelelmesser (score: 1)
Author:
Date: Mon, 4 Nov 2002 09:12:51 +0100
Hi Does somebody know if it is possible to change the pitch? It has 80Hz as well as 3100Hz bandwidth, but the pitch is ca 1000Hz and not too pleasant to listen to, would rather prefer 500Hz 73, Jan_M
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-11/msg00406.html (8,819 bytes)


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