Slug tuned crystal radio

Author: hrvf

August undefined, 2024

WebbSwedish crystal radio from 1922 made by Radiola, with earphones. The device at top is the radio's cat's whisker detector. A second pair of earphone jacks is provided. 1970s-era Arrow crystal radio marketed to children. The earphone is on left. Webb10 feb. 2024 · My previous experience with homebrew DX crystal radios (ones that can hear stations other than strong locals) had taught me …

A very selective and high performance crystal radio - geojohn.org

http://techlib.com/electronics/crystal.html Webb10 juli 1999 · Design, construction and measurement of a single-tuned crystal radio set using a two-value inductor, along with a discussion of the cause of 'hash', short-wave ghost-signal and spurious FM reception. A way is presented to determine if the signal operating the detector is above or below its linear-to-square-law crossover point : 02/07/2002; … the phillips hotel kc

Crystal radio set design and optimization with measurements on …

http://xtalman.com/germanium.html Webbactually adjustments antenna audio band base bolt braid brands cable called cause CB radio channel chassis circuit Clarifier coax Cobra coil color common completely connection connector... WebbAnswer (1 of 3): In a superheterodyne receiver the bandpass filtering of the unwanted signals is performed by the tunable RF filter and the Intermediate Frequency (IF) filter. Since the IF filter is a fixed bandpass filter, it has a much tighter passband than the tunable circuit. This allows a ve... sick days leave south africa

Remembering the Crystal Radio Nuts & Volts Magazine

The Screwdriver Expert

Webb15 okt. 2024 · 0310 9790 China Radio Int'l (CRI) Quivican, Cuba - English. 0315 7375 Radio Romania Int'l, Tiganesti, Romania - English. 0320 7335 Radio Marti, Greenville, NC - Spanish. 0355 5000 WWV Colorado. 0400 5935 WWCR, Nashville, TN - English. 0408 5085 WTWW, Lebanon, TN - English. 0429 4840 WWCR, Nashville, TN - English. WebbA modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device at top is the cat ' s whisker detector. Boy listening to a modern crystal radio. A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very simple ... sick days in spanishWebbsensitivity crystal set. Figure 2 — Schematic and parts list for high sensitivity crystal set. C1 — 15-365 pF air variable capacitor (www.midnightscience.com or see text). C2 — 2000 pF silver mica or ceramic capacitor. J1 — Mono headphone jack. L1 — 240 µH, 7.5-inch ferrite loop antenna (J. W. Miller Model 2000 or see text). sick days in the netherlands

"WebbA 10K resistor was then added to terminate the filter and the response squared up (as shown by curve "B") to give a passable 1 kc high-frequency filter. Fig. 7. Measured attenuation curves of a half-lattice filter using two nominal 5645 kc crystals having series-resonant frequencies separated by 560 cycles. " - Slug tuned crystal radio

Slug tuned crystal radio

WebbLes meilleures offres pour NOS PIÈCE RADIO RCA - I.F. TRANSFORMATEUR 4,5 MC SLUG RÉGLÉ DEPUIS LA BOUTIQUE DE RADIO TV sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! WebbHF ferrite tuning slug. HF mix. This was made for and used exclusively in Scientific Radio HF equipment produced in the 1980's. 0.500" diameter, 2.50" long + brass adjuster. 6-32 …

Did you know?

WebbAnswer (1 of 8): Absolutely, It is just as easy to vary inductance as capacitance. There are several known methods * you can introduce a moving core as you suggest * You can tap off the turns and move the connection from one turn to another * You can split the coil in two and move one half r... http://knoppix.net/store/Ferrite-Loopstick-Antenna-For-Am-Genuine-Miller-6300-Crystal-Radio-Ham-Nib_311427316389.html

Webb12 juni 2024 · The slug tuned inductor is a variable inductor having an adjustable ferrite core. The value of inductance increases or decreases respectively, due to the movement of a ferrite core into or out of the coil winding. Construction of slug tuned inductor: Slug tuned inductor The basic construction of a slug tuned inductor is shown in above figure. WebbHi-power 5/8"D ceramic slug tuned coil. 1.6 µH - 4.1 µH. HF mix ferrite slug. 5/8" coil, 2-1/2" behind panel. 12-1/2 turns, 18 AWG with locking nut. Requires 1/4" mounting hole. 16 …

WebbAfter constructing the 15-MHz RF coil, I tested it and found that the slug tuned the coil to 15 MHz with a nice tolerance on either side of the design resonant fre-quency. It worked! … WebbWelcome to Crystal Set Design 102. It is assumed that you've already completed the 101 level course elsewhere, and know, at least, something about electronics in general and crystal radios in particular. If not, hit the books. The stuff in your public library will get you started. The early chapters of the "Radio Amateurs Handbook" are ...

WebbVEF 206 inside Look. The VEF 206 has a plastic inner chassis, and a modern printed circuit board (PCB) thereby lowering manufacturing costs. If you have been playing with crystal radios, then you will already know that the most critical component for radio reception is the tuned LCR assembly consisting of a ferrite antenna coil and variable ...

WebbPost subject: Ferrite and slugs. Posted: Sep Fri 10, 2004 7:12 pm. Moderator. Joined: Jan Thu 01, 1970 12:00 am. Posts: 30905. Location: Livermore, CA. Hi John Brass works but goes in the opposite direction, reduces inductance while ferrite increases. the phillips machineWebbSlug tuned oscillator 450-470 KHZ (BFO) part 2 : how it was made in real (demo & schematic) radiofun232 14.4K subscribers Subscribe 41 Share 819 views 3 years ago PART 2 of the slug tuned... the phillips machinistWebbSep 5, 2024 - Crystal Radio web site. Crystal radio plans, crystal radio circuits, crystal radio schematics are all right here. Sound powered headphones and how to use them on crystal radios. Crystal Radios, Crystal Set, Crystal Sets, Catswiskers, Science Fair Crystal Radio, and much more! sick days in texasWebbSlug Tuned Coils - Miscellaneous Slug Tuned Coils - Phenolic Tuning Slugs & Miscellaneous Coil Forms Wound Coils: Ceramic Form Abrasives Aircraft & Government … the phillips point group morgan stanleyWebbThe Path to Power читать онлайн. In her international bestseller, The Downing Street Years, Margaret Thatcher provided an acclaimed account of her years as Prime Minister. … the phillips law firm llcWebbThese radios are tuned with a ferrite slug that is driven by a clever rack and pinion mechanism. These radios are styled to look like transistor radios of their day. They are … the phillips kcWebbFigure 1 shows the restoration of a crystal set I found on eBay that was very familiar to me. FIGURE 1. This restored crystal radio kit from Allied Radio in Chicago cost $2.50 in the … the phillips market center - west columbia