Tag Archives: microphone

Rode Procaster – Un nou microfon in shack

Am uitat sa va anunt ca, de cateva zile am cedat lui YO3GGR toata linia de procesare audio incepand de la microfon pana la ibox. Cum n-am putut sa raman cu conserva de MC43, atentia mi-a fost indreptata catre microfonul dinamic Rode Procaster.

Procaster detine o usoara accentuare in zona de joase, la aproximativ 130hz, un raspuns in frecventa destul de liniar pana la ~1.5 Khz  de unde se reincepe o accentuare de cativa decibeli pana undeva la 15-18 khz peste care apare o panta abrupta ce duce spre 20khz. Spectrul util folosit in comunicatiile SSB de radioamator/ham radio in HF este de la 100Hz la 3Khz, largime de banda ce o folosesc pe al meu Kenwood TS850s.

 

Diagrama cardioida a acestui microfon face din Rode Procaster un microfon superb pentru aplicatii de radiocomunicatii, atenuand destul de mult zgomotele din zonele laterale ale microfonului.

Odata conectat direct la borna de microfon a lui TS850s, setand nivelul de ALC cu o deflexie pana la jumatate si un nivel de procesare audio de maxim 10db la varfuri cu high boost apasat, Rode Procaster suna impresionant de bine. Exact cu ma asteptam efectul de prezenta tipica microfoanelor dinamice se resimte atunci cand se vorbeste in fata acestuia la 2-3 cm distanta intre gura si microfon.

Cand se creste aceasta distanta, nivelul frecventelor joase creste, efectul de prezenta scade dar modulatia isi pastreaza timbrul placut.

Se spune ca Rode Procaster face parte din categoria microfoanelor gen Heil PR40 si este direct concurent cu mult mai scumpul Electrovoice RE20. Nu pot sustine aceste vorbe dar pot spune fara ezitare ca sunt perfect multumit de Rode Procaster.

Sper sa pot face cat mai curand o inregistrare audio a emisiei mele folosind TS850s si Procaster, fara nici un fel de alta procesare externa transceiverului.


Stage of a photographer

Well how about that, the first step is always a “My phone has a cam with 7 gigapixels” ? I do remember that my first photo-cam I have touched was a old Russian film camera.

Can anyone draw a graph also for the ham radio hobby? Probably it will star with, “got my first CB/PMR handset after that I wanted an extended range and got myself a nice outdoor antenna… done some 11m dxing, get the ham radio license, bla bla on vhf/uhf echo bling link … and so. 😀

Now, let’s stick on the photo… Click on the image for a better view.

YO3IBW Audio Test 21.07.2009

In the audio sequence above you can hear the difference between the Behringer audio setup and the default hand mike MC43.

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In the image above you can see the graphic of Behringer Audio Setup. Microphone Behringer B1, Behringer Shark DSP110 (preamp, noise-gate, small compression), Behringer MiniFBQ 800 (9 band graphic EQ), Behringer MiniCOM 800 (Modeling Compressor)

mc43_graphic

In the image above you can see the graphic of Kenwood MC43.

The Kenwood TS850S AT was set 2.7Khz on 8.83 filter and also 2.7Khz on 455 filter with the transceiver speech processor ON. The recording was made from a President Lincoln transceiver and a condenser microphone connected to a laptop.

ATTENTION! This is not ESSB. I’m using the standard filters 2.7Khz wide but different “microphones”.

Behringer Shark DSP110, Small Review

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I don’t see on the net too many reviews about this great microphone solution that can be used also in Ham Radio with the help of a W2IHY Technologies “Ibox” or a home made filter like this one. With the Shark DSP110 you got a microphone preamp with phantom power for the condenser mike, a very effective noise gate with learning feature, a good speech compressor and other features that does not apply in Ham Radio. Watch the movie above, it’s not the best review but you can make an idea of how this baby shark is working.

Cheers!

My new desk mike, powered by Audio-Technica & Ikea

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Cam asa arata Desk Mike-ul meu construit dintr-o lampa pentru birou de la Ikea (35lei) modificata astfel incat sa indeplineasca rolul unui ” stativ microfon de masa, reglabil, tip brat ” care initial costa cam 294lei 😀   si un microfon Audio-Technica  PRO31 cu toate accesoriile incluse numai bune de folosit in acest proiect (157 lei). Costul total(stativ+microfon+cablu) ~ 192 lei.

Inventia de pe masa, adica acel Kenwood MC43s desfacut a fost o solutie de moment pentru a testa noul sistem de microfon. Urmeaza cutia cu PTT-ul precum si un mic montaj, intr-o alta cutie mica ce va face decuplarea galvanica a viitorului setup audio pentru transceriver. Stay tuned!

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Click on the thumbs for better resolution.

Audio-Technica PRO 31 Dynamic Microphone

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This is my new microphone, the dynamic cardiodid PRO 31 from Audio-Technica. Inside the box there is a XLR Male/Female cable (noting special), a nice SA (bracket), a wallet for the mike, some papers with the instructions and stuff and a beautifull Audio-technica sticker :D.

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Click on the thumbs for better resolution.

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