Re: [Flexradio] FlexRadio Digest, Vol 61, Issue 30
On 5/30/10 3:18 PM, William H. Fite wrote: > When I was flying my choice was David Clark but I know Flightcom is > good--and a lot cheaper. Did you build a box to match impedance? Or does > someone make a box? > You know, I got that wrong. It isn't Flightcom (although I have one of those too) but Avcomm is the one that has the great noise-canceling mic. The headset I am using is the Avcomm AC-200pnr. List price is $134 but street price seems to be about $115. I also have the Avcomm AC900pnr which is more comfortable for long term wearing but the street price is about $220. http://www.avcomm.com/index.php?route=product/category&path=35_36 As for matching things up, I just plugged the headphone in. It works acceptably well. Audio quality is excellent. The impedance of the earspeakers is 300 ohms per earspeaker so they present no difficult load for the headphone amp. There is adequate drive to make the headphone play as loud as I am likely to want. If you need more gain a speaker-to-line level transformer or outboard amp might be in order. I didn't find it necessary. For the mic I made a cable to go from the 8-pin mic connector on the front of the 5000 to go to a standard in-line aircraft mic connector. I use bias from the +5V on pin 2 through a 220 ohm resistor to Mic+ (pin 8). The mic input (pin 8) is capacitor coupled internally so I don't need a coupling cap to keep the mic bias out of the input stage. I don't use PTT with the headset but I did connect it to the tip of the in-line mic jack so if the headset has PTT it will work. (Some of the Avcomm headsets have a PTT button on one of the earcups.) Normally I use VOX or a foot pedal. The nice thing about these headsets is that they are constructed much more robustly than almost any consumer headset. They have heavy-duty earcups, metal head-band, etc. YMMV. -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FlexRadio Digest, Vol 61, Issue 30
the only answer to this that I know of is on page 66 of the april issue of qst. please excuse this since I am typing with spatula and tongs in handmeat almost cooked Lee k9wru - Original Message - From: "William H. Fite" To: Sent: Sunday, May 30, 2010 4:18 PM Subject: Re: [Flexradio] FlexRadio Digest, Vol 61, Issue 30 When I was flying my choice was David Clark but I know Flightcom is good--and a lot cheaper. Did you build a box to match impedance? Or does someone make a box? -- Message: 1 Date: Sat, 29 May 2010 10:53:22 -0700 From: Brian Lloyd To: dan edwards Cc: "flexradio@flex-radio.biz" Subject: Re: [Flexradio] Suggestions for Headsets that are not Heil Message-ID: <70ca2fcb-dbf4-4eaf-b4a4-f0fe2051c...@lloyd.com> Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes Perhaps not Hi-Fi but I like the mic on the Flightcom headsets. Works well in a warbird with a 110dB ambient noise level. Excellent communications quality articulation with background suppression. Seems to work well in the shack too. Brian Lloyd br...@lloyd.com +1.916.367.2131 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FlexRadio Digest, Vol 61, Issue 30
When I was flying my choice was David Clark but I know Flightcom is good--and a lot cheaper. Did you build a box to match impedance? Or does someone make a box? > > > -- > > Message: 1 > Date: Sat, 29 May 2010 10:53:22 -0700 > From: Brian Lloyd > To: dan edwards > Cc: "flexradio@flex-radio.biz" > Subject: Re: [Flexradio] Suggestions for Headsets that are not Heil > Message-ID: <70ca2fcb-dbf4-4eaf-b4a4-f0fe2051c...@lloyd.com> > Content-Type: text/plain; charset=us-ascii; format=flowed; > delsp=yes > > Perhaps not Hi-Fi but I like the mic on the Flightcom headsets. Works > well in a warbird with a 110dB ambient noise level. Excellent > communications quality articulation with background suppression. Seems > to work well in the shack too. > > Brian Lloyd > br...@lloyd.com > +1.916.367.2131 > > > ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
