Re: [AMRadio] Microphone recomendation
I've been having some success replacing the preamp in the base of amplified D104 mics with an FET buffer stage to ensure the crystal element is working into a very high load impedance. See... http://www.wd8das.net/D104-FETbuffer.gif The 4.7k resistor in the drawing can be changed to match other rig input impedances. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Very nice combination Don. Have you decided what those big triodes tubes are that I gave you, characteristics, etc., and speaking of Microphones have you found one of those connectors or a part number. As for the 12AX7s, I have always wondered if a guy could build a SS replacement with the same anode/drain characteristic curves or close as the 12AX7. FETs have a very high input resistance, They can be configure with a higher leak resistor than tubes without effecting the bias because they don't have the "contact or collision bias effect". They don't have the typical triode curves, but are more like a pentode curve set (constant current set as it is sometimes called). It may be possible to correct this through feedback biasing or depending on the circuit it will be used in, it may not matter. They may also require some over voltage protection to prevent breakdown when someone plugs in a microphone and a high pulse is placed on the input. I feel that all of these things can be overcome and good product resulting. I can see it now SS-AX7 by Matsumushisomma Maybe I'm behind and it is already here! John __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I currently use two microphones mixed together in proper phase, with a homebrew tube type 2-channel audio mixer. One mic is a vintage hi-Z Astatic D-104 and the other is an Electrovoice model 670 dynamic that otherwise might have been tossed out because it somehow developed very poor high frequency response. I mix in some audio from the dynamic to give the D-104 a little more bass response and mellow out the characteristic shrillness. Each channel of the mixer pre-amp has two hi-mu triode stages of amplification using a 12AX7 tube. Since the audiophools have driven up the price of n.o.s. 12AX7's to ridiculous extreme, a good alternative is a pair of older tubes, the 6F5 or 6SF5, which are electrically identical and have a mu of 100, just like the 12AX7. The D-104 has a built-in acoustical pre-emphasis curve, achieved by a response peak, that gives it the unique D-104 sound. But I added some additional pre-emphasis to the D-104 by careful choice of cathode resistor by-pass in the 12AX7 stages, so that the pre-amp has a rising characteristic starting about 800~ and rising up to about 9 dB at 2000~ and then levelling off. The combination of electrical pre-emphasis and peaked response curve of the D-104 gives it good punch by emphasising the sibilance frequencies of the voice. The bass response of the dynamic balances out the shrillness of the D-104 to give the overall audio a pleasant sound, at least with my voice. I use a low-pass filter in the audio line between the pre-amp/mixer and the compressor/peak limiter. It gives me the switchable choice of two passive L-C filters. One, which I use most of the time, has a gradual roll-off, beginning at about 5000~ with complete attenuation at about 7500~. For congested band conditions I switch to a sharp cut-off brick-wall filter that is flat out to about 3300~, but near complete attenuation at 3400~. I can switch out the filter entirely, but rarely run that way because I know some of the "broadcast quality" audio transformers in the chain have measurable phase shift distortion beginning around 10K, and this could cause some of the push-pull stages to generate splatter and distortion around 10 kHz from my carrier frequency. Besides, very few receivers used by amateurs would respond to 10 kHz audio because of the necessary selectivity for listening on the ham bands. Even with the 3400~ filter, the rising characteristic and peak in the 2-3.5 kHz region compensates for the lack of highs above the cut-off frequency while balancing out the low frequency response of the dynamic, and I routinely get reports of "broadcast quality" even when everything is cut off above 3400~. Most signal reports say there is only a subtle difference between the 3400~ and 7500~ cut-off, although with wide-open selectivity at the receiver the difference is said to be readily noticeable. The filter is followed up with a UREI BL-40 Modulimiter, which is a processing device built for AM broadcast use. It keeps the modulation level near 100% without overmodulating, and I don't have to ride the gain and closely watch the scope at all times to maintain a good modulation percentage without pinching off the carrier. Reports say the limiter is very transparent and has little effect on the sound of the audio. I do not try to compress or limit excessively in hopes of increasing the average power level in the sidebands; that produces distortion with little benefit. I just follow the manufacturer's recommendation for broadcast operation. The Modulimiter has two limiter stages, the first one called "RMS limiting", which is basically the same thing as compression, followed by "peak limiting" which is pretty much the normal meaning of the term. All units in my audio chain: pre-amp/mixer, low-pass filter unit, Modulimiter, line amplifier and transmitter are linked together with balanced 500/600 audio lines. Click on the link below to see where I first got the idea for my audio response curve when I built the mic pre-amp some 30+ years ago. I didn't follow his instructions exactly, and I don't guarantee that George's theory is 100% correct, but using it as a starting point for trial-and-error experimentation I got the best sounding audio possible with the microphones I had on hand. Since then I have tried some expensive broadcast type microphones running the pre-amp at flat response, and the audio was always inferior to what I get with my two-mic combination. Note: results may vary with different voices. I have monitored my audio while visitors were at the mic, and while some sounded great, others sounded like crap. I firmly believe you need to tailor your audio to sound best with YOUR voice over the air. http://www.amwindow.org/tech/pdf/eam.pdf ___ This message was typed using the DVORAK keyboard layout. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/
Re: [AMRadio] Microphone recomendation
There is a Brand New mixer up on E Bay right now ...It is a TASCAM ...Very nice quality...Make him an offer of more than $259 and I bet he will take it... Auction ## is 290352965894 All XLR an 1/4" ...I would love to have it but no MOOLA right now... Bob W1PE -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of sbjohns...@aol.com Sent: Thursday, September 24, 2009 7:44 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Microphone recomendation This Logitek rack mixer has XLRs and TRS phone jacks on the back, not bad. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - -Original Message- From: BILL GUYGER To: Discussion of AM Radio in the Amateur Service Sent: Thu, Sep 24, 2009 4:07 pm Subject: Re: [AMRadio] Microphone recomendation Not sure that Euro or Phoenix connectors were around (or at least readily available)�when these beasties were built. Strictly 1970's low tech. Bill AD5OL From: Paul Christensen To: Discussion of AM Radio in the Amateur Service Sent: Thursday, September 24, 2009 3:53:28 PM Subject: Re: [AMRadio] Microphone recomendation > Amen to Steve's comments on Logitek. They run 120V. from the back panel to > the power switch on the front panel on a piece of Belden 8451 shieded pair > audio cable bundled in with the microphone lines from the back panel > connectors. Shall we say less than "best engineering practices". And... Consideration to rack placement is critical.� If access to the Logitek's top cover is needed for maintenance and its obstructed, it means removing every single wire to an array of=2 0screw-down barrier strips.� A better solution for Logitek would have been to design a back-plane using miniature Euro-Block connectors so that groups of plugs can be unplugged from a mating barrier jack.� Need to remove the mixer from the rack?� No problem.� Just unplug a few connectors and reconnect when maintenance is complete. For most equipment, removing a few wires is not problematic.� But when you consider the number of possible connections on the Logitek back-plane, removing every wire can be a nightmare.� Fortunately for amateur radio purposes, not too many of us need a lot of inputs -- unlike typical remote broadcast demands. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/li stinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
This Logitek rack mixer has XLRs and TRS phone jacks on the back, not bad. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - -Original Message- From: BILL GUYGER To: Discussion of AM Radio in the Amateur Service Sent: Thu, Sep 24, 2009 4:07 pm Subject: Re: [AMRadio] Microphone recomendation Not sure that Euro or Phoenix connectors were around (or at least readily available) when these beasties were built. Strictly 1970's low tech. Bill AD5OL From: Paul Christensen To: Discussion of AM Radio in the Amateur Service Sent: Thursday, September 24, 2009 3:53:28 PM Subject: Re: [AMRadio] Microphone recomendation > Amen to Steve's comments on Logitek. They run 120V. from the back panel to > the power switch on the front panel on a piece of Belden 8451 shieded pair > audio cable bundled in with the microphone lines from the back panel > connectors. Shall we say less than "best engineering practices". And... Consideration to rack placement is critical. If access to the Logitek's top cover is needed for maintenance and its obstructed, it means removing every single wire to an array of=2 0screw-down barrier strips. A better solution for Logitek would have been to design a back-plane using miniature Euro-Block connectors so that groups of plugs can be unplugged from a mating barrier jack. Need to remove the mixer from the rack? No problem. Just unplug a few connectors and reconnect when maintenance is complete. For most equipment, removing a few wires is not problematic. But when you consider the number of possible connections on the Logitek back-plane, removing every wire can be a nightmare. Fortunately for amateur radio purposes, not too many of us need a lot of inputs -- unlike typical remote broadcast demands. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/li stinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
> Not sure that Euro or Phoenix connectors were around (or at least readily > available) when these beasties were built. Strictly 1970's low tech. Bill AD5OL They were around in 1995 -- the last time I had seen a Logitek Mixer installed. Other options existed then as well, including 6, 9, 12, and 15-pin Molex to keep wiring density manageable. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Not sure that Euro or Phoenix connectors were around (or at least readily available) when these beasties were built. Strictly 1970's low tech. Bill AD5OL From: Paul Christensen To: Discussion of AM Radio in the Amateur Service Sent: Thursday, September 24, 2009 3:53:28 PM Subject: Re: [AMRadio] Microphone recomendation > Amen to Steve's comments on Logitek. They run 120V. from the back panel to > the power switch on the front panel on a piece of Belden 8451 shieded pair > audio cable bundled in with the microphone lines from the back panel > connectors. Shall we say less than "best engineering practices". And... Consideration to rack placement is critical. If access to the Logitek's top cover is needed for maintenance and its obstructed, it means removing every single wire to an array of screw-down barrier strips. A better solution for Logitek would have been to design a back-plane using miniature Euro-Block connectors so that groups of plugs can be unplugged from a mating barrier jack. Need to remove the mixer from the rack? No problem. Just unplug a few connectors and reconnect when maintenance is complete. For most equipment, removing a few wires is not problematic. But when you consider the number of possible connections on the Logitek back-plane, removing every wire can be a nightmare. Fortunately for amateur radio purposes, not too many of us need a lot of inputs -- unlike typical remote broadcast demands. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
> Amen to Steve's comments on Logitek. They run 120V. from the back panel to > the power switch on the front panel on a piece of Belden 8451 shieded pair > audio cable bundled in with the microphone lines from the back panel > connectors. Shall we say less than "best engineering practices". And... Consideration to rack placement is critical. If access to the Logitek's top cover is needed for maintenance and its obstructed, it means removing every single wire to an array of screw-down barrier strips. A better solution for Logitek would have been to design a back-plane using miniature Euro-Block connectors so that groups of plugs can be unplugged from a mating barrier jack. Need to remove the mixer from the rack? No problem. Just unplug a few connectors and reconnect when maintenance is complete. For most equipment, removing a few wires is not problematic. But when you consider the number of possible connections on the Logitek back-plane, removing every wire can be a nightmare. Fortunately for amateur radio purposes, not too many of us need a lot of inputs -- unlike typical remote broadcast demands. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Amen to Steve's comments on Logitek. They run 120V. from the back panel to the power switch on the front panel on a piece of Belden 8451 shieded pair audio cable bundled in with the microphone lines from the back panel connectors. Shall we say less than "best engineering practices". Kind of handy device overall with all the audio routing, monitor switching, etc. but they make me cringe. Bill AD5OL From: "sbjohns...@aol.com" To: amradio@mailman.qth.net Sent: Thursday, September 24, 2009 2:31:40 PM Subject: Re: [AMRadio] Microphone recomendation >Is that Logitek from Fair Radio ? No, but maybe they have them too. I got this one free from a fellow broadcaster who was otherwise going to throw it away. It is really too noisy (hiss) for my taste, but free is hard to beat, and I haven't found a better rackmount mixer to replace it yet. I'd like to get a Pacific Recorders NewsMixer but haven't found one priced cheap enough for my budget. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - -Original Message- From: VJB To: amradio@mailman.qth.net Sent: Wed, Sep 23, 2009 7:55 pm Subject: Re: [AMRadio] Microphone recomendation Steve I really enjoy that photo/text page of your transmitter project. http://www.wd8das.net/gates.html There's nothing like seeing a Gates on a trailer hitch carrier. I can only imagine what people thought you were a-totin' going down the road. That's a nice audio setup you described. Is that Logitek from Fair Radio ? Fred, KC4MOP was thinking about buying one because they looked good and it was a brand name for not much money. I should probably again float this YouTube video from a while ago, making a Gates fit in the back of a minivan. THAT was a fun project. The transmitter i s now restored and retuned to 160, operating out of Michigan. http://www.youtube.com/watch?v=QOfAGCq0SY0 Best wishes, Paul --previous text follows-- Right now my Gates BC1T has a Sennheiser 421 dynamic cardioid mic (set one click off "M"), feeding a Berhinger VX200 mic processor. Then it goes thru a fairly noisy Logitek rack mixer to an equalizer to let me roll the highs off to avoid being too wide, That in turn feeds a 4-band Texar Audio Prism, then a hot-rodded 3-band Dorrough DAP-310 with the second generation AM limiter card. The processors are all running pretty gently. There's picture of the audio rack on my website at the bottom of the page related to the Gates transmitter: http://www.wd8das.net/gates.html Steve WD8DAS __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
> found a better rackmount mixer to replace it yet. I'd like to get a > Pacific Recorders NewsMixer but haven't found one priced cheap enough > for my budget. I would check with Mooretronix. Although they primarily service PR&E product, from time-to-time they also have reconditioned consoles available for purchase. Not too many of the NewsMixers exist. When production was running, they were primarily sold to large group owners. Few medium and small-market stations could afford them. http://www.mooretronix.com/ Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation, a query...
Just for curiosity, has anyone built and used the homebrew boom mic and used it from the article in QST a few years ago? -Original Message- From: Todd, KA1KAQ Sent: Tuesday, September 22, 2009 12:56 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Microphone recomendation On Tue, Sep 22, 2009 at 1:36 PM, Ed Sieb wrote: > Why operate split, Max? Most of us can operate on 3705 now. > We Canadians have been down there for years! > And us Yanks got to join the fun a few years back. I've heard Henk, Jean and the gang on 3705 a few times, but could never quite make the trip. Maybe this winter. I avoid 3885 until the late night hours, it's just more enjoyable down where the band is quiet. Don't forget 40m, Max. Below 7200 is wide open now, plenty of SSB DX with some AM sprinkled in. A few of the guys have worked across the pond on AM there already. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
>Is that Logitek from Fair Radio ? No, but maybe they have them too. I got this one free from a fellow broadcaster who was otherwise going to throw it away. It is really too noisy (hiss) for my taste, but free is hard to beat, and I haven't found a better rackmount mixer to replace it yet. I'd like to get a Pacific Recorders NewsMixer but haven't found one priced cheap enough for my budget. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - -Original Message- From: VJB To: amradio@mailman.qth.net Sent: Wed, Sep 23, 2009 7:55 pm Subject: Re: [AMRadio] Microphone recomendation Steve I really enjoy that photo/text page of your transmitter project. http://www.wd8das.net/gates.html There's nothing like seeing a Gates on a trailer hitch carrier. I can only imagine what people thought you were a-totin' going down the road. That's a nice audio setup you described. Is that Logitek from Fair Radio ? Fred, KC4MOP was thinking about buying one because they looked good and it was a brand name for not much money. I should probably again float this YouTube video from a while ago, making a Gates fit in the back of a minivan. THAT was a fun project. The transmitter i s now restored and retuned to 160, operating out of Michigan. http://www.youtube.com/watch?v=QOfAGCq0SY0 Best wishes, Paul --previous text follows-- Right now my Gates BC1T has a Sennheiser 421 dynamic cardioid mic (set one click off "M"), feeding a Berhinger VX200 mic processor. Then it goes thru a fairly noisy Logitek rack mixer to an equalizer to let me roll the highs off to avoid being too wide, That in turn feeds a 4-band Texar Audio Prism, then a hot-rodded 3-band Dorrough DAP-310 with the second generation AM limiter card. The processors are all running pretty gently. There's picture of the audio rack on my website at the bottom of the page related to the Gates transmitter: http://www.wd8das.net/gates.html Steve WD8DAS __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Wed, Sep 23, 2009 at 8:33 PM, Rob Atkinson wrote: > Well at the risk of starting another long blowout, I would like to > meekly make the point that I find some justification in outboard > processing for AM if will add a little punch and clarity to the > sidebands and increase the average power in them. > I like smooth, full audio as much as the next person. Looking forward to getting the BC rig online here so I can finally play in that area a bit. But just as the KW-1's circuitry is a limiting factor, so is the receiver on the other end. Winter conditions at least offer more opportunities to open things up without as much noise and interference to deal with, provided the other stations is running an R-390, older Super Pro, SX-28, or other rigs capable of handling the full signal in the first place. The AM filter in the 75A-4 is 6kcs wide, and while it sounds pretty good, it's nothing like an old SP-100, 200, or 400 with the variable IF opened up to 16kcs and the push-pull 8F6s driving a big speaker with 10+ watts. I'd bet the AMers using receivers with average audio outnumber those with Hi-Fi set ups. Carbon mic or outboard compression, it's all fun in my view. ~ Todd, KA1KAQ/4 __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I think that is a real good idea. I like to limit the frequency response, no point in being real wide, and control the modulation. I hear plenty of guys on the air under and over modulating, as well as operating 2 or more KHz away from where everyone else is operating. But I don't think you need 5 real expensive boxes in line to do the job. I have a berringer gizmo that does it all for under $100.00 new. Brett - Original Message - From: "Rob Atkinson" To: "Discussion of AM Radio in the Amateur Service" Sent: Wednesday, September 23, 2009 8:33 PM Subject: Re: [AMRadio] Microphone recomendation > Well at the risk of starting another long blowout, I would like to > meekly make the point that I find some justification in outboard > processing for AM if will add a little punch and clarity to the > sidebands and increase the average power in them. I think since AM in > the U.S. is limited to about half the power it once was, this is a > pale attempt to make up for that but it's better than nothing. I want > to be clear that I'm not advocating the kind of distorted processing > found in those RF speech processors that the contest and dx ops use > with all knobs fully clockwise, but rather the gentle audio > compressors and fast attack peak limiters that will slightly raise > the average audio level going into the rig maintaining a very low THD. > > 73 > > Rob > K5UJ > __ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Steve I really enjoy that photo/text page of your transmitter project. http://www.wd8das.net/gates.html There's nothing like seeing a Gates on a trailer hitch carrier. I can only imagine what people thought you were a-totin' going down the road. That's a nice audio setup you described. Is that Logitek from Fair Radio ? Fred, KC4MOP was thinking about buying one because they looked good and it was a brand name for not much money. I should probably again float this YouTube video from a while ago, making a Gates fit in the back of a minivan. THAT was a fun project. The transmitter is now restored and retuned to 160, operating out of Michigan. http://www.youtube.com/watch?v=QOfAGCq0SY0 Best wishes, Paul --previous text follows-- Right now my Gates BC1T has a Sennheiser 421 dynamic cardioid mic (set one click off "M"), feeding a Berhinger VX200 mic processor. Then it goes thru a fairly noisy Logitek rack mixer to an equalizer to let me roll the highs off to avoid being too wide, That in turn feeds a 4-band Texar Audio Prism, then a hot-rodded 3-band Dorrough DAP-310 with the second generation AM limiter card. The processors are all running pretty gently. There's picture of the audio rack on my website at the bottom of the page related to the Gates transmitter: http://www.wd8das.net/gates.html Steve WD8DAS __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Well at the risk of starting another long blowout, I would like to meekly make the point that I find some justification in outboard processing for AM if will add a little punch and clarity to the sidebands and increase the average power in them. I think since AM in the U.S. is limited to about half the power it once was, this is a pale attempt to make up for that but it's better than nothing. I want to be clear that I'm not advocating the kind of distorted processing found in those RF speech processors that the contest and dx ops use with all knobs fully clockwise, but rather the gentle audio compressors and fast attack peak limiters that will slightly raise the average audio level going into the rig maintaining a very low THD. 73 Rob K5UJ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Voices can be so radically different that it is hard to say that one mic is a "good one" for everyone. And just because you like how you sound to yourself in the headphones, that doesn't mean you really sound good, due to the mixing of the sound coming in your ears with the sound that travels through your head. Reports of from other stations are important, but an even better check is to record yourself on a local monitor receiver (suitably protected against overload) and listen back to it. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ - Radio is your best entertainment value. - __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Tue, Sep 22, 2009 at 1:36 PM, Ed Sieb wrote: > Why operate split, Max? Most of us can operate on 3705 now. > We Canadians have been down there for years! > And us Yanks got to join the fun a few years back. I've heard Henk, Jean and the gang on 3705 a few times, but could never quite make the trip. Maybe this winter. I avoid 3885 until the late night hours, it's just more enjoyable down where the band is quiet. Don't forget 40m, Max. Below 7200 is wide open now, plenty of SSB DX with some AM sprinkled in. A few of the guys have worked across the pond on AM there already. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Tue, Sep 22, 2009 at 1:30 PM, Gerald Stockinger < cliogunsm...@centurytel.net> wrote: I am going to make the recommended audio changes to the KW-1 including > jumpering the clipper and eliminating the splatter filter. I will start > with the Shure 55SH that I have and may also try other mics. But it will > stop there. No outboard processing, equalizing, or compressing. The clipper change is a bit cloudy now, but I think you can just simply the leg of one cap and move it, that's it. The splatter filter is even easier: unscrew the lugs on either side, tie them together with a screw, lockwasher, nut, and insulate well so it can't come into contact with the cabinet. That will help protect your mod iron. I ordered all the caps from AES and spent a few hours one afternoon replacing them on the audio deck. There's plenty of space to work, so you can take your time, remove all the old leads, and install the news ones cleanly. Can't wait to hear you on the air with it, Jerry. If I can help in any way, don't hesitate to drop me a note. 73 - ~ Todd, KA1KAQ/4 __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Why operate split, Max? Most of us can operate on 3705 now. We Canadians have been down there for years! Ed, VA3ES - Max M0GHQ wrote: [...] keep your ears out on 3705 over the winter months for European stations we can split rx to 3885. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Since I am the troublemaker that started this thread I want to say thanks to Bob and Todd. I will admit that I have enjoyed watching this thread veer off toward the moon and I will also say I enjoyed reading all the different comments. I agree with Bob's summation. Right on. If I wanted to run a broadcast station I would buy one. As Todd summed it up I am going to make the recommended audio changes to the KW-1 including jumpering the clipper and eliminating the splatter filter. I will start with the Shure 55SH that I have and may also try other mics. But it will stop there. No outboard processing, equalizing, or compressing. Thanks to all that responded and now maybe you can help with the request for D104 rebuilding that I just posted 73 Jerry K9GOZ rbethman wrote: > Yes, Todd has tried to re-focus the intended discussion! > > It normally is helpful. The individual indeed has a KW-1, Remembered > that he HAS a Shure-55, as the discussion went, AND is looking to get > all the "specific" information to work on the modulation deck - in a > "one shot one kill" strike, as his body can't really tolerate a bunch of > removals. > > So the "runaway", with all the garbage of audio processing and D-104s, > is all beyond where this was started AND ended. > > I've yet to understand why this seems to "always" develop this way. > > Some want to be Broadcast Engineers at home. Okay, have a ball! > > Some of us only wish to communicate with a "respectable" duplication of > our voices. I, for one, seem to have what a bunch of folks "like" for > an on-air voice. That comes with NO processing. > > I guess it will simply continue until folks get tired. > > Bob - N0DGN > > Todd, KA1KAQ wrote: > >> On Tue, Sep 22, 2009 at 11:56 AM, Jim Tonne wrote: >> >> >>> The discussion had seemingly gotten into a "runaway" mode >>> where folks were telling everyone how to make the input >>> impedance super duper high. I just sat here shaking >>> my head and wondering why :-) >>> >>> >> Even more odd since the original question was specific to the KW-1 >> transmitter and its associated circuits. I settled on a 4.7 meg resistor in >> my 'updates' which seems to fit my voice well (more midrange than bass). I >> think folks got focused more on the pros ad cons of the crystal D-104 which >> is intentionally a bit peaky. The best thing you can do with the preamp >> versions is bypass the preamp in most cases. The unamplified pre-CB model is >> the one to look for. >> >> ~ Todd, KA1KAQ/4 >> >> > > __ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Wow, Such a massive amount of mails in my inbox today, I had to find out what was going down, actually this is one of the most interesting threads for a long time, keep it up people, great reflector, I am going to try some of these with my own big AM (BC-610E) here in the UK, I have a Shure 55 which is just itching to be tried on the 'Beast', keep your ears out on 3705 over the winter months for European stations we can split rx to 3885. 73 Max M0GHQ -- I am using the free version of SPAMfighter. We are a community of 6 million users fighting spam. SPAMfighter has removed 1834 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this message __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Yes, Todd has tried to re-focus the intended discussion! It normally is helpful. The individual indeed has a KW-1, Remembered that he HAS a Shure-55, as the discussion went, AND is looking to get all the "specific" information to work on the modulation deck - in a "one shot one kill" strike, as his body can't really tolerate a bunch of removals. So the "runaway", with all the garbage of audio processing and D-104s, is all beyond where this was started AND ended. I've yet to understand why this seems to "always" develop this way. Some want to be Broadcast Engineers at home. Okay, have a ball! Some of us only wish to communicate with a "respectable" duplication of our voices. I, for one, seem to have what a bunch of folks "like" for an on-air voice. That comes with NO processing. I guess it will simply continue until folks get tired. Bob - N0DGN Todd, KA1KAQ wrote: > On Tue, Sep 22, 2009 at 11:56 AM, Jim Tonne wrote: > >> The discussion had seemingly gotten into a "runaway" mode >> where folks were telling everyone how to make the input >> impedance super duper high. I just sat here shaking >> my head and wondering why :-) >> > > Even more odd since the original question was specific to the KW-1 > transmitter and its associated circuits. I settled on a 4.7 meg resistor in > my 'updates' which seems to fit my voice well (more midrange than bass). I > think folks got focused more on the pros ad cons of the crystal D-104 which > is intentionally a bit peaky. The best thing you can do with the preamp > versions is bypass the preamp in most cases. The unamplified pre-CB model is > the one to look for. > > ~ Todd, KA1KAQ/4 > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Mon, Sep 21, 2009 at 3:40 PM, Stevan A. White wrote: > > > Todd, KA1KAQ wrote: > > > You can probably make a soup can sound decent with enough processing, so > mic > > choice becomes more a choice of preference and less one of performance. > > > Funny but quite true, you just need a "decent" soup can. > The particular one I have here is an old RCA 77D rebuilt by Clarence Kane and given to me at my wedding rehearsal by my best man, WA2PJP. It will eventually hang from an old Atlas BS-37 boom stand and travel through a Collins 26W limiting compressor, 116F passive equalizer, and 212A console before entering the 300G transmitter. It'll likely need a preamp added after the equalizer too, which is really just an attenuator. Unlike most amateur transmitters, broadcast mics and transmitters pretty much require the use of some outboard processing. OTOH, the audio coming out of a KW-1 will remain limited by design without some major reworking. Be it a new audio driver circuit using 4 tubes vs. 2, stiffer mod iron, or the age-old component modifications. Trying to run outboard processing as-is will more likely add to the feeling of it really being 'outboard distortion'. Rather than trying to make it into something it was never intended to be (a broadcast transmitter), I found it easier to do the simple component mods including bypassing the clipper and splatter filter circuits, enjoy it as-is, and get the 300G for the broadcast experience. You can really go wild with some of the old amateur gear with outboard mod iron and the rest. It really gets down to what you like, what you expect from it, and how much room you have. Simply following Jay's article in ER makes the KW-1 sound really nice, though without major surgery, it will never modulate like a custom-built homebrew or broadcast rig. ~ Todd, KA1KAQ/4 __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Tue, Sep 22, 2009 at 11:56 AM, Jim Tonne wrote: > > The discussion had seemingly gotten into a "runaway" mode > where folks were telling everyone how to make the input > impedance super duper high. I just sat here shaking > my head and wondering why :-) > Even more odd since the original question was specific to the KW-1 transmitter and its associated circuits. I settled on a 4.7 meg resistor in my 'updates' which seems to fit my voice well (more midrange than bass). I think folks got focused more on the pros ad cons of the crystal D-104 which is intentionally a bit peaky. The best thing you can do with the preamp versions is bypass the preamp in most cases. The unamplified pre-CB model is the one to look for. ~ Todd, KA1KAQ/4 __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Paul: > Although not shown through the model diminishing returns > hits pretty fast > just above 5 megohm. That was basically my point.I seem to recall that the D-104 folks were recommending a 5.1 megohm load. That was a very long time ago so perhaps my memory is faulty. The discussion had seemingly gotten into a "runaway" mode where folks were telling everyone how to make the input impedance super duper high. I just sat here shaking my head and wondering why :-) - Jim W4ENE __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Jim, The LTSpice plot shows why the stock Astatic 2-stage pre-amp with its ~ 470K-ohm input Z does little to extend low-end response. The model also likely assumes a perfect C in series with the source. After testing several D-104 cartridges of different vintage, I've come to the conclusion that distributed resistance appears across the crystal, thereby limiting any additional benefit of an extraordinarily high inout Z beyond 10 meg-ohm. Although not shown through the model diminishing returns hits pretty fast just above 5 megohm. I've not seen any element produce a reasonably flat response below ~ 50 Hz. Still, as long as the target is about 70 Hz to hit the lowest of vocal fundamentals, there's no reason to strive for anything better unless one relishes the sound of room rumble which in turn also unnecessarily raises RF duty cycle. Paul, W9AC - Original Message - From: "Jim Tonne" To: "Discussion of AM Radio in the Amateur Service" Sent: Tuesday, September 22, 2009 11:07 AM Subject: Re: [AMRadio] Microphone recomendation > > I have been lurking here and reading the discussion > which seems to me to have reduced itself down to a > kind of "my daddy is better than your daddy" kind of > thing. > > The person who said the D104 microphone could be > thought of as a voltage generator in series with a > 500 pF capacitor hit the nail on the head! Exactly > correct (although I thought it might be a *slightly* > higher capacitance value). > > I have spent a few minutes with LTspice and made > a plot which clearly shows what happens when you > change the value of the load on the D104 microphone. > With a 10 megohm load the -3 dB point will be right > at 30 Hz. > > Please, fellows, take a quick peek at this plot: > http://tonnesoftware.com/appnotes/D104loadTest.gif > > The bottom line of this note is that going higher than > 10 megohms for a load is nonsense. Pure nonsense. > > - Jim W4ENE > > > __ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio@mailman.qth.net > To unsubscribe, send an email to amradio-requ...@mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I used about 15 megs of grid-leak with a D-104 in the early 70s, and I was picking up a strong 9 Hz rumble that was probably from a nearby main road. The D-104 is a good choice for super-high Z inputs because it has a strong response peak around 3 KHz. This makes brighter, clearer audio, which improves things - especially with people listening on selective receivers. Bacon (the old Bacon), WA3WDR Sent from my Verizon Wireless BlackBerry -Original Message- From: "Jim Tonne" Date: Tue, 22 Sep 2009 11:07:19 To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Microphone recomendation I have been lurking here and reading the discussion which seems to me to have reduced itself down to a kind of "my daddy is better than your daddy" kind of thing. The person who said the D104 microphone could be thought of as a voltage generator in series with a 500 pF capacitor hit the nail on the head! Exactly correct (although I thought it might be a *slightly* higher capacitance value). I have spent a few minutes with LTspice and made a plot which clearly shows what happens when you change the value of the load on the D104 microphone. With a 10 megohm load the -3 dB point will be right at 30 Hz. Please, fellows, take a quick peek at this plot: http://tonnesoftware.com/appnotes/D104loadTest.gif The bottom line of this note is that going higher than 10 megohms for a load is nonsense. Pure nonsense. - Jim W4ENE __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I have been lurking here and reading the discussion which seems to me to have reduced itself down to a kind of "my daddy is better than your daddy" kind of thing. The person who said the D104 microphone could be thought of as a voltage generator in series with a 500 pF capacitor hit the nail on the head! Exactly correct (although I thought it might be a *slightly* higher capacitance value). I have spent a few minutes with LTspice and made a plot which clearly shows what happens when you change the value of the load on the D104 microphone. With a 10 megohm load the -3 dB point will be right at 30 Hz. Please, fellows, take a quick peek at this plot: http://tonnesoftware.com/appnotes/D104loadTest.gif The bottom line of this note is that going higher than 10 megohms for a load is nonsense. Pure nonsense. - Jim W4ENE __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
> pair of high-mu triodes in a push-pull mic preamp. That way, each tube > can > have its own 10 meg grid leak to allow for a 20 megohm load on the xtal. It's possible to duplicate a similar circuit using an FET differential amplifier with dual FETs in a single package (e.g., 2SJ109), or a JFET-input instrumentation amp (e.g., LT1102). Both would perform best when using a bi-polar supply to economize on parts count and avoid having to use half-rail biasing technique. In each case, input Z is 2x the single-ended amp for a total of 22 meg-ohm. The circuit could be installed in the D-104 mic head, with shielded twisted-pair running to a balanced-input speech amp. Seems like there are other factors that limit the practical input Z to ~10 megohm for a crystal cartridge. The source Z and slight shunt resistance internal to the crystal cartridge may be the limiting factor. I've used a series input R of 10-meg in front of my single JFET's gate and the response is pretty much limited to about 50 Hz with or without the added R -- with the only noticeable difference being lower output level and increased noise. With the first fundamental of the deepest male voice being greater than 70 Hz, it's kinda' hard to justify a response that extends any lower for any form of voice communication, including AM and ESSB. Anything lower than 70 Hz unnecessarily increases power duty cycle and produces other unwanted artifacts like room rumble and deep breathing sounds. Paul, W9AC __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
The D-104 or any other crystal mic needs to work into PLENTY of megohms of load resistance. Astatic recommends 5 megohms, but I run mine at 10 megs - probably about as high a grid leak resistance that you can use in a tube type preamp and maintain stable operation. I have plans in the works to replace the single conductor shielded mic cord with a two-conductor one, and connect the mic up in a balanced circuit for pushpull operation, and use a pair of high-mu triodes in a push-pull mic preamp. That way, each tube can have its own 10 meg grid leak to allow for a 20 megohm load on the xtal. You can think of a crystal mic as an ideal a.c. generator with about a 500 pf capacitor wired in series. In order to get the best low-end response, the load resistance needs to be HIGH because of the high capacitive reactance in series. But there are inherent limitations to how high an input impedance you can achieve with a tube or FET input device. With the tube, if the grid leak resistance is too high, the grid will begin to hold a static charge that is not being drained off fast enough, and the bias voltage and plate current will drift around, resulting in distorted, flaky unstable output. 10 megs is about the limit. The instruction sheet that came with the earlier versions of the D-104 (the ones without the CB "power mic" feature) gave details on how to connect the mic up for a push-pull input stage. The stock xtal element is built as a balanced device. The unshielded bakelite case has two terminals, and either one can be used as "hot" or "ground" in the unbalanced configuration. For balanced output, connect the two wires from a two-conductor mic cord to the two terminals, and connect the shield to a ground point inside the mic head. Use a 3-connector mic plug, and at the mic preamp, let each conductor go to the grid (or gate) of one of the push-pull input devices (tube or FET), and ground the shield to chassis. The pushpull output is established by the two load resistors (grid leaks in the case of a tube pre-amp) of each amplifying device. They must be very close to equal in resistance. One end of each goes to ground. The two load resistors in series makes up the load resistor for the xtal element, and they act as a voltage divider to provide the balanced push-pull audio output for the amplifier. For a perfect match, I would recommend a pair of 10 megohm resistors, or two 5 megohm resistors in series for each, and using a DVM, match up the total resistances by adding smaller resistors series with the one with the lower resistance, until both give identical resistance readings. Besides improving the low frequency response of the mic, the balanced configuration makes it more immune to 60~ hum and rf pickup. Astatic recommends the balanced line for long mic cords more than a few feet in length. Don k4kyv ___ This message was typed using the DVORAK keyboard layout. http://www.mwbrooks.com/dvorak/ http://gigliwood.com/abcd/ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Todd, KA1KAQ wrote: > You can probably make a soup can sound decent with enough processing, These fellers sounded pretty good (and got paid ten dollars) for singing into a can ;-) http://www.youtube.com/watch?v=krwywj_gIjk 73, Bob W9RAN __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Todd, KA1KAQ wrote: > [lots of snips] > I've always used a crystal D-104 with excellent results, ... but if you do > the simple mods to the audio > of your transmitter and plug in a decent D-104 (make sure the element is in > good shape with a scope), you'll be very pleased. > An excellent place to begin! > You can probably make a soup can sound decent with enough processing, so mic > choice becomes more a choice of preference and less one of performance. > Funny but quite true, you just need a "decent" soup can. 73 de W5SAW, Steve White __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Bob Peters wrote: > Also the EV-664 is a great HI Z mic > > And, in a pinch, it makes a pretty decent hammer! 73, Bob W9RAN __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Earlier, in my enthusiasm for Heil mics I failed to mention (except at the end of my post) that I like and still use Shure mics. The 55S and 737A are good hi-Z mics as are the Shure 585SD, 565SD, and 545SD (all dual-Z) and the E-V 664 which was a very popular podium mic in the 60s and 70s. I have an old E-V 664 which I plan to restore and use in my ham station. It too can be wired for either hi-Z or lo-Z. Take a look at http://www.coutant.org/contents.html for information on a lot of different mics. 73 de W5SAW, Steve White rbethman wrote: > Jerry, > > There are two good Hi-Z mics that come to mind. Both are, (were), mfg > by Shure. The 55S and the 737A. > > Both have a response from about 100cps to 10Kc. > > [snip] > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
On Mon, Sep 21, 2009 at 11:09 AM, Gerald Stockinger < cliogunsm...@centurytel.net> wrote: > > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask here. > The rig is a Collins KW-1. I need a good quality (broadcast if you will) > microphone to use with it, I have a deep voice and I sound terrible on a > 300 to 3000 mic. I need more lows than that. I welcome any suggestions > on what microphone might fill my needs. > Welcome to the KW-1 club, Jerry. I've had mine since 1988, pretty sure it was my first AM transmitter on the air too, otherwise the 32V gets the honor. Rob brings up a good point: where your transmitter fell in the production (first or last half, basically) will determine how it will sound with any mic. Later production units had tighter audio and require a fattening of the coupling caps along with a few other tweaks to get better audio. Later models had better plate blocking and a few other perks though, so it all evens out. Required reading IMO if you don't already have it is Electric Radio #23, March 1991. It's a special edition entirely about the KW-1 with stories from then-current owners as well as an article by Jay Bromley W5JAY (then KA5DGH) on making audio improvements to the transmitter. I did most of these mods from a sheet sent to me by Uncle Ed, WA3PUN who is a former owner. Basically, bypass the clipper and splatter choke, fatten up the coupling caps from .01s to .1s, and change the grid resistor in the 12AXY mic input circuit from the stock 1 meg to 4+ megs (Jay suggests 5M or more, but I used 4.7 and it sounds good). I didn't replace the 872s with SS sticks, but instead used 4B32s which are a drop in sub that you can find with the same glass envelope as the 872s if aesthetics are important. I've always used a crystal D-104 with excellent results, both on the KW-1 and 32V. These mods are pretty much tailored to that impedence. Another good ER issue to read on this matter is October '93 #54 I think. Gary Halverson gives an excellent explanation of mics, audio, and what's involved. Personally, I've never heard a Heil mic I liked, but I haven't heard the newer ones and it's just my opinion. As soon as you start adding processing to change characteristics, it all goes out the window IMO. Gary's article is good for this info, such as having to equalize and boost the ribbon mics and such. Nothing against processing, but if you do the simple mods to the audio of your transmitter and plug in a decent D-104 (make sure the element is in good shape with a scope), you'll be very pleased. If you want to go the processed sound route, simple feed it into the phone patch jack (you'll still have to do the other mods) and you're good to go. You can probably make a soup can sound decent with enough processing, so mic choice becomes more a choice of preference and less one of performance. ~ Todd, KA1KAQ/4. __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Bob, As you have pointed out about "other" microphones, the Shure 55 Series has a VERY long and distinguished history of use under all conditions on stage. They get waved around, swung and banged on. They still keep ticking! Best with 5Meg ohm input, but will also do well as low as 1 Meg Ohm. The 5 Meg Ohm range of impedance input brings out the low end of the audio better. (I don't have any financial interests in Shure or ANY mfr!) Bob - N0DGN Bob Peters wrote: > Also the EV-664 is a great HI Z mic > > Bob W1PE > > -Original Message- > From: amradio-boun...@mailman.qth.net > [mailto:amradio-boun...@mailman.qth.net] On Behalf > Of rbethman > Sent: Monday, September 21, 2009 1:44 PM > To: Discussion of AM Radio in the Amateur Service > Subject: Re: [AMRadio] Microphone recomendation > > Jerry, > > There are two good Hi-Z mics that come to mind. > Both are, (were), mfg > by Shure. The 55S and the 737A. > > Both have a response from about 100cps to 10Kc. > > I know that most folks seem to no longer consider > them, BUT, Mike M., > W3NB has won the Heavy Metal Rally several times > with his Gates TX and > his 55S. > > Mike also has the lows. I do to, but to a lesser > extent, and use a 737A. > > YMMV! > > Bob - N0DGN > > Gerald Stockinger wrote: > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
It's also a great Lo-Z mic too. I use it on my FT-990 with excellent results. Ed, VA3ES Bob Peters wrote: Also the EV-664 is a great HI Z mic __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Also the EV-664 is a great HI Z mic Bob W1PE -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of rbethman Sent: Monday, September 21, 2009 1:44 PM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Microphone recomendation Jerry, There are two good Hi-Z mics that come to mind. Both are, (were), mfg by Shure. The 55S and the 737A. Both have a response from about 100cps to 10Kc. I know that most folks seem to no longer consider them, BUT, Mike M., W3NB has won the Heavy Metal Rally several times with his Gates TX and his 55S. Mike also has the lows. I do to, but to a lesser extent, and use a 737A. YMMV! Bob - N0DGN Gerald Stockinger wrote: > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask here. > The rig is a Collins KW-1. I need a good quality (broadcast if you will) > microphone to use with it, I have a deep voice and I sound terrible on a > 300 to 3000 mic. I need more lows than that. I welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ > > -- +- -+ | AM Amateur Radio OperatorNØDGN | +- -+ | http://home.comcast.net/~rbethman/ | +- -+ | Bob Bethman\\\|/// " The absence of a danger | | \\ ~ ~ // signal does *NOT* mean | | rbeth...@comcast.net (/ @ @ /) that everything is OK " | +--o00o---°(_)°---o00o -+ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Jerry, There are two good Hi-Z mics that come to mind. Both are, (were), mfg by Shure. The 55S and the 737A. Both have a response from about 100cps to 10Kc. I know that most folks seem to no longer consider them, BUT, Mike M., W3NB has won the Heavy Metal Rally several times with his Gates TX and his 55S. Mike also has the lows. I do to, but to a lesser extent, and use a 737A. YMMV! Bob - N0DGN Gerald Stockinger wrote: > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask here. > The rig is a Collins KW-1. I need a good quality (broadcast if you will) > microphone to use with it, I have a deep voice and I sound terrible on a > 300 to 3000 mic. I need more lows than that. I welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ > > -- +--+ | AM Amateur Radio OperatorNØDGN | +--+ | http://home.comcast.net/~rbethman/ | +--+ | Bob Bethman\\\|/// " The absence of a danger | | \\ ~ ~ // signal does *NOT* mean | | rbeth...@comcast.net (/ @ @ /) that everything is OK " | +--o00o---°(_)°---o00o-+ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
My D-104 seems to work just fine on my unmodified Valiant I and Ranger I. What microphones have you guys used with those rigs? Carl Yaffey K8NU Banjo, guitar, bass, mandolin, dobro lessons. Pro Tools recording studio. cyaffeyno_s...@gmail.com 614 268 6353, Columbus OH http://www.carl-yaffey.com http://www.grassahol.com __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Firstly, that's one hell of a first rig for AM! Congratulations. To me, the mic to use depends on what's been done to the KW1. Is it stock? A later KW1? It seems to me that then you would want a Hi Z "communications mic." Besides what has been mentioned, there is the Shure 444 and 520. The 520 is the "Green Bullet." If it's been modified for audio and can take line level low Z then you can run some processing, and a "broadcast" type microphone like one of the ones that has been mentioned.I think the RE20 and 27 are overpriced for ham radio; you can do real well with a Shure SM58 dynamic to a preamp and employ some equalizing and tight peak limiting ahead of the KW1. I'm afraid a broadcast or performance type mic right into the rig would sound muddy or muffled but you could always try it, what the heck, you never know for sure until you experiment. I have endured communications audio on SSB for a few years so to me, AM makes almost anything sound good, even the seemingly narrow 300-3000 Hz sounds good to me now. 73 Rob K5UJ On Mon, Sep 21, 2009 at 10:09 AM, Gerald Stockinger wrote: > > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask here. > The rig is a Collins KW-1. I need a good quality (broadcast if you will) > microphone to use with it, I have a deep voice and I sound terrible on a > 300 to 3000 mic. I need more lows than that. I welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I use a Heil GM-4 hand mike on am and ssb. I also have a deep voice and used to be in radio broadcasting. The Heil wide element has a freq response of 60-16k with a bump at 2k to improve intelligence while still having a good low end. The mike also has the Heil high freq element with a switch to change into it if needed. I never use the high element only use the full range. I get excellent audio reports on am and ssb. I am using a Kenwood TS-2000. Quoting Gerald Stockinger : > > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask here. > The rig is a Collins KW-1. I need a good quality (broadcast if you will) > microphone to use with it, I have a deep voice and I sound terrible on a > 300 to 3000 mic. I need more lows than that. I welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ > __ > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I agree with that... But not the low end of the 30 and 40... Bob -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of manualman Sent: Monday, September 21, 2009 11:24 AM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Microphone recomendation Heil's PR-781 works great on AM and "full body" SSB. Pete, wa2cwa > -Original Message- > From: amradio-boun...@mailman.qth.net > [mailto:amradio-boun...@mailman.qth.net] On Behalf > Of Gerald Stockinger > Sent: Monday, September 21, 2009 10:10 AM > To: AM Radio > Subject: [AMRadio] Microphone recomendation > > > Good morning to all. Since I will soon be new to > AM having been on SSB > since 1957 I need the benefit of others > experience. Last week a good > amount of time was spent on audio quality so I > thought I would ask here. > The rig is a Collins KW-1. I need a good quality > (broadcast if you will) > microphone to use with it, I have a deep voice and > I sound terrible on a > 300 to 3000 mic. I need more lows than that. I > welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
A 32V series transmitter has very restricted audio... For those and I always will recommend a D-104 or a Shure 55 Or 10DA Astatic No low end no high end pretty well a mid range xmtr Bob W1PE -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Phil LaMarche Sent: Monday, September 21, 2009 11:31 AM To: 'Discussion of AM Radio in the Amateur Service' Subject: Re: [AMRadio] Microphone recomendation I use a K3 on SSB and a 32V-3 on AM. What recommendation for the Collins. Get rave reviews with a D-104 every time I get on. Phil Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 K3 #1605 CCA 98 00827 CRA 1701 W9DVM -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of manualman Sent: Monday, September 21, 2009 12:24 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Microphone recomendation Heil's PR-781 works great on AM and "full body" SSB. Pete, wa2cwa > -Original Message- > From: amradio-boun...@mailman.qth.net > [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Gerald > Stockinger > Sent: Monday, September 21, 2009 10:10 AM > To: AM Radio > Subject: [AMRadio] Microphone recomendation > > > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask > here. > The rig is a Collins KW-1. I need a good quality (broadcast if you > will) microphone to use with it, I have a deep voice and I sound > terrible on a 300 to 3000 mic. I need more lows than that. I welcome > any suggestions on what microphone might fill my needs. 73 Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Funny, as I was typing my other mic comments I was thinking that a good condition, properly adjust D-104 would be the first thing I'd try on just about any hi-Z input BA rig, especially a Collins. 73 de W5SAW, Steve White Phil LaMarche wrote: > I use a K3 on SSB and a 32V-3 on AM. What recommendation for the Collins. > Get rave reviews with a D-104 every time I get on. > > Phil > __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
I use a K3 on SSB and a 32V-3 on AM. What recommendation for the Collins. Get rave reviews with a D-104 every time I get on. Phil Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 K3 #1605 CCA 98 00827 CRA 1701 W9DVM -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of manualman Sent: Monday, September 21, 2009 12:24 PM To: amradio@mailman.qth.net Subject: Re: [AMRadio] Microphone recomendation Heil's PR-781 works great on AM and "full body" SSB. Pete, wa2cwa > -Original Message- > From: amradio-boun...@mailman.qth.net > [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Gerald > Stockinger > Sent: Monday, September 21, 2009 10:10 AM > To: AM Radio > Subject: [AMRadio] Microphone recomendation > > > Good morning to all. Since I will soon be new to AM having been on SSB > since 1957 I need the benefit of others experience. Last week a good > amount of time was spent on audio quality so I thought I would ask > here. > The rig is a Collins KW-1. I need a good quality (broadcast if you > will) microphone to use with it, I have a deep voice and I sound > terrible on a 300 to 3000 mic. I need more lows than that. I welcome > any suggestions on what microphone might fill my needs. 73 Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Heil's PR-781 works great on AM and "full body" SSB. Pete, wa2cwa > -Original Message- > From: amradio-boun...@mailman.qth.net > [mailto:amradio-boun...@mailman.qth.net] On Behalf > Of Gerald Stockinger > Sent: Monday, September 21, 2009 10:10 AM > To: AM Radio > Subject: [AMRadio] Microphone recomendation > > > Good morning to all. Since I will soon be new to > AM having been on SSB > since 1957 I need the benefit of others > experience. Last week a good > amount of time was spent on audio quality so I > thought I would ask here. > The rig is a Collins KW-1. I need a good quality > (broadcast if you will) > microphone to use with it, I have a deep voice and > I sound terrible on a > 300 to 3000 mic. I need more lows than that. I > welcome any suggestions > on what microphone might fill my needs. 73 > Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
How about against the RE27, your opinion? Philip LaMarche LaMarche Enterprises, Inc. www.instantgourmetspices.com www.w9dvm.com 800-395-7795 pin 02 727-944-3226 FAX 727-937-8834 NASFT 30210 K3 #1605 CCA 98 00827 CRA 1701 W9DVM -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Bob Peters Sent: Monday, September 21, 2009 11:51 AM To: 'Discussion of AM Radio in the Amateur Service' Subject: Re: [AMRadio] Microphone recomendation Hi Jerry... I have 2 heil PR-40 mics that I use on Am... These have tremendous low end. I have a GATES BC1G Broadcast xmtr that off course can take the low end... I use a Radio Design labs mixer with their parametric EQ and a URIE Limiter. Everyone one says it sounds as good as some of the best AM Radio stations in north Texas. The mic is not cheap... WB0W discounts it from the Heil Retail at around $299.00 The PR40 was the mic used for all the cannon shots in the movie Letter from Iwo Jima ( Spelling not correct)I have also used the EV RE10 but prefer the Heil... Good luck and if I can be of any help yell at me. Audio is my favorite part of Ham Radio...I really do not know if the KW1 will pass that low end without mods... Very Best 73's, Bob W1PE Mesquite,TX http://www.w1pe.com http://www.myhamshack.com/W1PE/ Blog -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Gerald Stockinger Sent: Monday, September 21, 2009 10:10 AM To: AM Radio Subject: [AMRadio] Microphone recomendation Good morning to all. Since I will soon be new to AM having been on SSB since 1957 I need the benefit of others experience. Last week a good amount of time was spent on audio quality so I thought I would ask here. The rig is a Collins KW-1. I need a good quality (broadcast if you will) microphone to use with it, I have a deep voice and I sound terrible on a 300 to 3000 mic. I need more lows than that. I welcome any suggestions on what microphone might fill my needs. 73 Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [AMRadio] Microphone recomendation
Hi Jerry... I have 2 heil PR-40 mics that I use on Am... These have tremendous low end. I have a GATES BC1G Broadcast xmtr that off course can take the low end... I use a Radio Design labs mixer with their parametric EQ and a URIE Limiter. Everyone one says it sounds as good as some of the best AM Radio stations in north Texas. The mic is not cheap... WB0W discounts it from the Heil Retail at around $299.00 The PR40 was the mic used for all the cannon shots in the movie Letter from Iwo Jima ( Spelling not correct)I have also used the EV RE10 but prefer the Heil... Good luck and if I can be of any help yell at me. Audio is my favorite part of Ham Radio...I really do not know if the KW1 will pass that low end without mods... Very Best 73's, Bob W1PE Mesquite,TX http://www.w1pe.com http://www.myhamshack.com/W1PE/ Blog -Original Message- From: amradio-boun...@mailman.qth.net [mailto:amradio-boun...@mailman.qth.net] On Behalf Of Gerald Stockinger Sent: Monday, September 21, 2009 10:10 AM To: AM Radio Subject: [AMRadio] Microphone recomendation Good morning to all. Since I will soon be new to AM having been on SSB since 1957 I need the benefit of others experience. Last week a good amount of time was spent on audio quality so I thought I would ask here. The rig is a Collins KW-1. I need a good quality (broadcast if you will) microphone to use with it, I have a deep voice and I sound terrible on a 300 to 3000 mic. I need more lows than that. I welcome any suggestions on what microphone might fill my needs. 73 Jerry K9GOZ __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amra...@mailman.qth.ne t/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio@mailman.qth.net To unsubscribe, send an email to amradio-requ...@mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
