venerdì 5 Marzo 2021

AMPLIFICATORE CON REGOLAZIONE DEI TONI

Nella parte finale dell’articolo a corredo del progetto di filtro audio attivo per bassa frequenza ho accennato al fatto che l’elaborazione di un segnale da parte di un filtro comporta uno scadimento, in termini di effetto presenza. In altri termini il vantaggio che si ottiene stringendo la banda passante è compensato da un risultato audio poco tollerato da un BCL …

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AMPLIFICATORE AM PER ONDE MEDIE E CORTE

Vi propongo la costruzione di questo amplificatore per alta frequenza dallo schema semplice, che utilizza componenti reperibili anche nello più povero dei laboratori, che si appronta in un pomeriggio e dal rendimento accettabile. Analizzando lo schema elettrico possiamo notare, all’ingresso, la possibilità di poter disporre, con S, di un segnale in onde medie oppure un altro in onde corte. Nel …

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SWLDXBulgaria News Dec.1

FRANCE(non)   Reception of Manara Radio via TDF Issoudun, Dec.1: 1600-1700 on 17765 ISS 150 kW / 170 deg to WeAf Hausa, poor/fair http://swldxbulgaria.blogspot.bg/2016/12/reception-of-manara-radio-via-tdf.html FRANCE(non)   Reception of R.Sagalee Qeerroo Bilisummaa via TDF Issoudun, Dec.1 1630-1658 on 17840 ISS 250 kW / 130 deg to EaAf Oromo Tue/Thu/Fri, fair to good http://swldxbulgaria.blogspot.bg/2016/12/reception-of-rsagalee-qeerroo.html GREECE   Voice of Greece on 9420, 9935 & 11645 kHz, …

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MSF Outage – 8 December 2016

Notice of Interruption MSF 60 kHz Time and Frequency Signal The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio Station will be shut down on Thursday 8 December 2016 from 10:00 to 14:00 UTC. The interruption to the transmission is required to allow maintenance work to be carried out in safety. If you require any additional information, …

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Glenn Hauser logs November 30-December 1, 2016

** CUBA. 9710 & 9535, Dec 1 at 0510, open carrier/dead air from RHC Spanish frequencies, not turned off at 0500, but not switching to English either like sometimes. 11840, Dec 1 at 0513, RHC Spanish still running here somewhat undermodulated but S9+20, plus the parasitic spurs on 11830 & 11850 (Glenn Hauser, OK, DX LISTENING DIGEST) ** NORTH AMERICA. …

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SWLDXBulgaria News Nov.28-30

AFGHANISTAN   Reception of Radio Afghanistan External Service, Nov.30 1530-1700 on  6100#YAK 100 kW / 125 deg to SoAs English, Urdu, Arabic # strong QRM  6095 KAS 500 kW / 269 deg to N/ME English CRI 1500-1600 # strong QRM  6105 SZG 500 kW / 315 deg to EaEu Russian CRI 1500-1600 # weak co-ch  6100 KNG 250 kW / non-dir …

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Agenda DX 01/12/2016

ANNIVERSARIO EMITTENTI Radio La Fuente Musical, Costarica 1300 Khz (1979) Radio El Espectador, Uruguay 810-11835 Khz (1923) Radio Relogio Federal, Brasile 4905 Khz (1951) Emisoras Unidas, Colombia 720 Khz (1929) Radio Chanè, Bolivia 1275 Khz (1975) Radio 2000, Argentina 1490 khz (1998) Radio Panamericana, Perù 560 Khz (1953) Radio Puerto Ordaz, Venezuela 1250 Khz (1966) Harbour Light, Grenada 1400 Khz …

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Glenn Hauser logs November 29-30, 2016

** ALBANIA. 7360, Nov 29 at 1847, JBA carrier. The PL-880 is still tuned to 7360 following last night`s abortive attempt to hear the People & Stories special via Armenia, so what is this already, only a quarter-hour after local mean noon? HFCC shows CRI French via Albania! at 18-20, 150 kW, 310 degrees from Cërrik, i.e. aimed right on …

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Agenda DX 30/11/2016

ANNIVERSARIO EMITTENTI Radio Panambi Vera, Paraguay 1140 Khz (1974) Radio Jaèn, Perù 5005 Khz (1963) Valley Radio, Gran Bretagna 999-1116 Khz (1996) Northland Radio, Gran Bretagna 1035 Khz (1986) Radio ZDK, Antigua 1100 Khz (1971) XEEP Radio Educaciòn, Messico 6185 Khz (1924) FESTE NAZIONALI Festa dell’Indipendenza a Barbados

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Glenn Hauser logs November 28-29, 2016

** CUBA. 9565-9595, Nov 29 at 0131, CRI English relay on 9580 is buzzing/crackling out to a 30-kHz range, including QRMing the other CRI English relay on 9570 via Albania, which is quite weak relatively tonight. And the ChiCom thought it was smart to situate // relays only ten kHz apart! (Glenn Hauser, OK, DX LISTENING DIGEST) ** GERMANY [non]. …

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Channel 292 special thursday

Channel 292 on 6070kHz via Rohrbach will have special all-day broadcasts on the next three Thursdays from 0700-1900 UTC, as follows:   Thursday 1 December: R Ohne Namen Day (editions of “Here we go!” and two episodes of “Something with media”)   Thursday 8 December: Goldrausch 6070 Day   Thursday 15 December: Super Clan R. Day

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Agenda DX 29/11/2016

ANNIVERSARIO EMITTENTI Radio El Mundo, Argentina 1070 Khz (1935) Radio Granma, Cuba (1932) Radio Sicuani, Perù 4826 Khz (1959) Radio Tucumàn, Argentina 1110 Khz (1928)

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