-
How the DC-DC converter worksI've not seen this before. The DCC-DC converter inside the Speccy has always been quite a mistery for me: [url]http://www.tablix.org/~avian/blog/arch…
... core preferred a frequency in the range of 50 KHz.
You ... -
(Re) building a ZX Spectrum laserharpThe Cambridge show is nearing, and I want to bring my laserharp with me. Why? Because it's built around a ZX Spectrum +2: [IMG]http://benophetintern…
... frequency should be above human visible limit for example at 1 kHz ... -
(Re) building a ZX Spectrum laserharpThe Cambridge show is nearing, and I want to bring my laserharp with me. Why? Because it's built around a ZX Spectrum +2: [IMG]http://benophetintern…
... frequency should be above human visible limit for example at 1 kHz ... sensor output contains the modulated frequency?
Do you have any ... -
Frequency in KHz of the TV outputI recently acquired a very cheap USB analog TV tuner. When I connect it to the cable TV, it only finds two channels. But when I change the frequency …
... when I change the frequency in KHz manually with reference to ... cannot find the frequency when scanning between 48250 KHz and 822250KHz, ... What would be the frequency in KHz of the modulator output?[/QUOTE ... to transmit on the correct frequency, so it may be ... -
Frequency in KHz of the TV outputI recently acquired a very cheap USB analog TV tuner. When I connect it to the cable TV, it only finds two channels. But when I change the frequency …
... /> Channel
(MHz) (kHz) (MHz) (kHz)
35 582 582000 590 ... , not the actual channel carrier frequency.
For more ... and some can show what frequency they are set to. ... -
Frequency in KHz of the TV outputI recently acquired a very cheap USB analog TV tuner. When I connect it to the cable TV, it only finds two channels. But when I change the frequency …
... when I change the frequency in KHz manually with reference to the ... -
Timing in loading routinesJust for curiosity I have done some experiments with SAVE command in accurate emulators, and then analyzing the generated WAV and I have obtained lit…
... MHz is as good sampling frequency as any other (which is ... as for resolution, considering the frequency response of magnetic tapes is ... the range of tens of kHz at best, 3.5MHz is ... -
Modem problem, please help!We have an internet connection with dlspeed 10Mbit/s and ulspeed 2Mbit/s. Until now our modem has been a TP-Link TD-8610 that only gives an upload sp…
... the direction of frequency tones between 138 and 276 kHz, previously used ... -
ZX spectrum 128K + 2 (Grey one :)Hi all, I'm trying to revive a dead ZX 128K +2 (the grey one). The regulator was damaged and seemed to be feeding 7.8Volts onto the pcb. Yikes ! I…
... starts again. The frequency of operation is in the kHz range (hence ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... played with JSpeccy using 32 Khz sampling frequency. The tape was loaded ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... played with JSpeccy using 32 Khz sampling frequency. The tape was loaded ... -
Connect spectrum to monitorHello, Probably a stupid question but I'll ask it anyway :) Is there a way to connect a spectrum to a vga or dvi monitor? Thanks, Ant?nio
... with a line rate (horizontal) frequency of 15.625kHz and a ... field (vertical) frequency of 50Hz. The colour system ... line rate (horizontal) frequency of 31.4686 kHz and so will not ... -
48k AudioI'm at the point in my game where I could use a few beeps and bloops. Ive been looking at loads of different speccy books, but this whole business of…
... to be a fairly high frequency note so you can get ... generate screechy tones in the kHz region. Repeat the pattern 0 ... ,24,24 to halve the frequency, etc. By playing a stepping ... -
Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…
... screen (approximately a 7.8 kHz square wave) it wasn't ... as one half that frequency (3.9 kHz), making me suspect I ... the speaker at the higher frequency. (Although it could be my ... -
C64 for the PiSomeone is writing the C64 natively for the Rasberry Pi and it looks amazing. I hope this will make someone do a ZX Spectrum too. Take a look its a…
... m assuming 15 kHz refers to the horizontal sync frequency.
... a horizontal sync frequency of 15.75 KHz, NTSC-M ... changed to 15.73425 kHz [1], and system I ... the UK) is 15.625 kHz [2].
... anything ever used 15 kHz exactly (something like an ... -
5C series NTSC ULA 5C114E 8248Not sure if this has been mentioned before; I haven't seen anything about it online. Chris Smith's book discusses 6C011E as the NTSC ULA sold in Spec…
... /> 15.625 kHz line frequency
59.1856 Hz frame frequency
15747.767857 kHz line frequency
59.6506 Hz frame frequency
15.750 kHz line frequency
59.65909 Hz ... -
C64 for the PiSomeone is writing the C64 natively for the Rasberry Pi and it looks amazing. I hope this will make someone do a ZX Spectrum too. Take a look its a…
... m assuming 15 kHz refers to the horizontal sync frequency.
< ... have a horizontal sync frequency of 15.75 KHz, NTSC-M changed ... if anything ever used 15 kHz exactly (something like an ... sorry!). Is 'horizontal sync frequency' the frequency you had to tune the ... -
48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…
... half cycle ripple)
[*]Several kHz from the TR4/TR5/coil ... will partly depend on the frequency response of the meter used ... really good filtering and high frequency decoupling of the +12V supply ... -
1-Bit Sound AccuracyI'm hoping someone can give this snapshot a try on a real machine (just press enter to start the music): https://drive.google.com/file/d/0B6XhJJ33xp…
... human hearing and outside the frequency response of any speaker system ... sample point and then high frequency samples are taken again, ... and that causes that pictured frequency response to alias, meaning ... of itself every sample rate kHz. You will get a high ... -
Recommend: "modern" (1994-2017) games...No, that is not a typo in the thread. *Next* christmas (i.e. 25th December 2017) it will be 30 years to the day I opened a box containing a Spectr…
... Programme which used the LW frequency we now know for Radio ... realms of possibility that 198 kHz LW could be picked up ... -
Understanding tape edgesI've never done any tape reading code. But I've read about these "edges" on multiple occasions. Trouble is I don't understand what they heck they are…
... ). These filter out low frequency signals (including any DC ... i]Roughly[/i] speaking, limiting frequency response to what a cassette ... 150~200 kHz or thereabouts). For a low frequency input signal, ... seeing a high frequency signal or a low frequency signal. Which ... -
50 Hz / 60 Hz switch in Timex Computer 2068I'm not sure if this is common knowledge, I've certainly never read about it online, though it may be documented in Portuguese or Polish. There is a…
... /> PAL: 14 MHz = 15.625 kHz (line frequency) * 224 (CPU clock cycles ... the NTSC ULA crystal frequency. 15.750 kHz is the older black ... and white line frequency used ... 734 kHz and it comes from dividing the NTSC sound carrier frequency ... -
Difference between REW/REV and FFWD/CUE?Apologies for such a noob question but what is exactly the difference regarding those buttons of a tape player (with and without the two combined)? …
... help you:[/quote]
4 kHz cutoff? Oh, then my loader ... ’s about the lowest cutoff frequency I’ve seen in these ... machines. And I thought 8 kHz was low. ;;)
[quote ... -
128k sound should be mono or stereo?So I keep reading arguments 'for' and 'against' but I never seem able to make up my mind. On one side it's a fact that no 128k model ever had ster…
... their locations in meters, not Khz/Mhz frequency. Always took the UK ... -
Loading Schemes > 1-bit per 2 edgesHi Guys, I'm just having another look at loading schemes again (a subject that interests me). Does anyone know if there any loading schemes t…
... limit the upper sampling frequency to 16 kHz (which gives you about ... 8 kHz of actual usable audio bandwidth). ... -
Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
... could be 15 KHz, effective top frequency then is 7 KHz, and it ... -
The sound quality (or not) of AM radioInspired by [url=https://worldofspectrum.org/forums/discussion/comment/995799/#Comment_995799]this comment about the BBC's methods of beating pirate …
The various frequency bands for the U.K. ... /> LW is 148.5 - 255 kHz
MW is 526.5 ... kHz - 1.6065 MHz
FM/ ...
