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
Hei undrer hvor mange som er aktive på 136kHz i Sverige? 73 Jan-Martin [email protected] --Opprinnelig melding-- Fra: Johan Bodin [mailto:[email protected]] Sendt: 26. september 2002 22:32 Til: r
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
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 [
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
Suspect it is sort of fast heated valve 73 LA8AK --Opprinnelig melding-- Fra: hamilton mal [mailto:[email protected]] Sendt: 27. november 2002 19:58 Til: [email protected] Emne: LF: tub
but it is so easy to delete --Opprinnelig melding-- Fra: hamilton mal [mailto:[email protected]] Sendt: 13. november 2002 20:31 Til: [email protected] Emne: LF: puzzle The odd Off Topic
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
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
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:[email protected]] Sen
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
ha ha Yes, you said 25µJ per capacitor..... 73 Jan-Martin, LA8AK --Opprinnelig melding-- Fra: James Moritz [mailto:[email protected]] Sendt: 8. november 2002 12:52 Til: rsgb_lf_group@blacksheep.
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
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
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
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
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
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
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
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
