Re: [Elecraft] K3s: microphone connector 8V current

i’m not interesting in using the 8V line for mic element bias. That was someone else. My application is to power an external device between a mic and a K3/K4 from that line. I can, of course, use a battery. But it would be much simpler if the 8V line could supply at least 20ma without

Re: [Elecraft] K3s: microphone connector 8V current

Grant, The MH2/MH4 mic does not use the 8 volts directly - there is a resistor between the 8 volt supply and the AF line, and that is where the 10ma is used to power the electret elemant. The 10 ma. used by the microphone has nothing to do with the total current available from pin 6. 73,

Re: [Elecraft] K3s: microphone connector 8V current

I have the same question about the current available for the 8V at the mic connector. Is it limited to 10ma, or will it actually support a somewhat higher continuous current draw safely. Not just for the k3, but also the K4. Grant NQ5T > On Jul 26, 2020, at 7:46 PM, Don Wilhelm wrote: > >

Re: [Elecraft] K3s: microphone connector 8V current

Henk, If indeed it is for a mic preamp, then try it without the preamp. The K3S has 2 stages of mic AF gain. Normal for the usual ham mics, and a Hi level for low gain mic elements. You must turn on bias to have the 8 volts appear at the mic jack. Do not use with direct connection of a

Re: [Elecraft] K3s: microphone connector 8V current

What are you going to use this voltage for? I think it’s for a mic preamp. It is not the source of bias for an electret mic. That comes on the mic pin when turned On in the menu. Sent from my iPhone ...nr4c. bill > On Jul 26, 2020, at 2:57 PM, Henk de Vries wrote: > > Hi all, > At the

[Elecraft] K3s: microphone connector 8V current

Hi all, At the K3s microphone connector the 8V output (pin 6) is specified at 10 mA max.However a UA78M08CDC voltage regulator - which is directly connected to +12V - provides the voltage/current to this pin.The UA78M08CDC is specified at 500 mA max. Is there any reason why a current of approx.

Re: [Elecraft] K3S Microphone Cable

during a major offensuve. Sent from my Verizon, Samsung Galaxy smartphone Original message From: Garry VE7PNQ <ve7...@telus.net> Date: 1/16/18 22:09 (GMT-06:00) To: j...@audiosystemsgroup.com, elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable Back

Re: [Elecraft] K3S Microphone Cable

(GMT-06:00) To: j...@audiosystemsgroup.com, elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable Back in my broadcast years I worked at the low budget end of the industry where we did what ever it took to get on the air at the lowest cost possible. In  small market stations

Re: [Elecraft] K3S Microphone Cable

Hi Garry, As a genuine OF (born 1941) who still keeps trying to learn something new every day, I strongly suggest that you study the material on my website about The Pin One Problem. I own thousands of feet of high quality pro mic cables and about 40 pro mics. Yes, physics doesn't change,

Re: [Elecraft] K3S Microphone Cable

...@mailman.qth.net] On Behalf Of Jim Brown Sent: Tuesday, January 16, 2018 9:49 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable The nature of the shield matters a lot. Back in 1994, Neil Muncy, ex-W3WJE (SK), published the landmark AES paper in which he exposed both The Pin One

Re: [Elecraft] K3S Microphone Cable

Call HRI in Woodbridge. My source! Sent from my iPhone ...nr4c. bill > On Jan 16, 2018, at 10:08 AM, "j...@kk9a.com" wrote: > > I saw the Heil connectors and Heil wire when I first started my search. I > was not interest in the wire. I did have an interest in the Foster >

Re: [Elecraft] K3S Microphone Cable

Hi Bob, Shield coverage does not matter!  Study the SCIN paper -- what matters is the UNIFORMITY of the shield. In the world of pro audio, we learned long ago that twisting is at least as important as shielding, both at audio and RF frequencies. From the earliest days of telephony, telco

Re: [Elecraft] K3S Microphone Cable

p.com, elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable I've used some star quad cable in certain pro audio applications. The braid shield type is necessary where flexibility is required however, just as in coax, not all braid is the same.  Some provides 85% shield (poor

Re: [Elecraft] K3S Microphone Cable

On Tue, Jan 16, 2018 at 10:48 AM, Jim Brown wrote: > The nature of the shield matters a lot. Back in 1994, Neil Muncy, ex-W3WJE > (SK), published the landmark AES paper in which he exposed both The Pin One > Problem and Shield Current Induced Noise (SCIN). The Pin One

Re: [Elecraft] K3S Microphone Cable

> their F and BNC connectors and tools, too. > > > Sent from my Verizon, Samsung Galaxy smartphone > Original message From: Jim Brown > <j...@audiosystemsgroup.com> Date: 1/16/18 11:48 (GMT-06:00) To: > elecraft@mailman.qth.net Subject: Re: [Elecraft]

Re: [Elecraft] K3S Microphone Cable

January 16, 2018 12:49 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable The nature of the shield matters a lot. Back in 1994, Neil Muncy, ex-W3WJE (SK), published the landmark AES paper in which he exposed both The Pin One Problem and Shield Current Induced Noise (SCIN

Re: [Elecraft] K3S Microphone Cable

: 1/16/18 11:48 (GMT-06:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3S Microphone Cable The nature of the shield matters a lot. Back in 1994, Neil Muncy, ex-W3WJE (SK), published the landmark AES paper in which he exposed both The Pin One Problem and Shield Current Induced Noise

Re: [Elecraft] K3S Microphone Cable

The nature of the shield matters a lot. Back in 1994, Neil Muncy, ex-W3WJE (SK), published the landmark AES paper in which he exposed both The Pin One Problem and Shield Current Induced Noise (SCIN). The Pin One Problem is the (now) well known equipment design defect, whereby the cable shield

Re: [Elecraft] K3S Microphone Cable

John, I agree that the Heil 8 pin connectors are the best. The Heilwire is IMHO the best wire for ham applications because it contains additional conductors for PTT as well as a shielded twisted pair and is soft and flexible. 73, Don W3FPR On 1/16/2018 10:08 AM, j...@kk9a.com wrote: I saw

[Elecraft] K3S Microphone Cable

I saw the Heil connectors and Heil wire when I first started my search. I was not interest in the wire. I did have an interest in the Foster connectors but could not find them in stock anywhere. 73, John KK9A Bill Wrote: Heil has the best Foster connector. Sold in pairs. Not sure if price but

[Elecraft] K3S Microphone Cable

edge, an AT 4G LTE smartphone. > > Original message > From: j...@kk9a.com > Date: 1/15/18 19:46 (GMT-06:00) > To: 'Elecraft Reflector' <elecraft@mailman.qth.net> > Subject: [Elecraft] K3S Microphone Cable > > I am remaking my SO2R control box cables

Re: [Elecraft] K3S Microphone Cable

se it at all. But find >> and use the best ones tou can find. >> 73, ClayKY5G >> >> >> Sent from my Verizon, Samsung Galaxy smartphone >> Original message From: j...@kk9a.com Date: 1/15/18 19:46 >> (GMT-06:00) To: 'Elecraft Reflector'

Re: [Elecraft] K3S Microphone Cable

smartphone Original message From: j...@kk9a.com Date: 1/15/18 19:46 (GMT-06:00) To: 'Elecraft Reflector' <elecraft@mailman.qth.net> Subject: [Elecraft] K3S Microphone Cable I am remaking my SO2R control box cables and I need to purchase quality microphone cable howeve

Re: [Elecraft] K3S Microphone Cable

John, For microphone wire and 8 pin plugs, check out Universal Radio https://www.universal-radio.com I have used the ultra flexible Heilwire (universal Radio #2645) and find it quite suitable with its shielded twisted pair, and they have 8 pin plugs their p/n #2112 that are quite

Re: [Elecraft] K3S Microphone Cable

Date: 1/15/18 19:46 (GMT-06:00) To: 'Elecraft Reflector' <elecraft@mailman.qth.net> Subject: [Elecraft] K3S Microphone Cable I am remaking my SO2R control box cables and I need to purchase quality microphone cable however I am not sure what to get. I am using an electret microphone. I a

Re: [Elecraft] K3S Microphone Cable

On 1/15/2018 5:46 PM, j...@kk9a.com wrote: I assumed that I would need a cable with a single conductor and a shield but most mic cables that I see have two conductors. Belden has a single conductor http://www.awcwire.com/mfg/belden/product/belden-high-impedance-microphone-c able but it's a high

Re: [Elecraft] K3S Microphone Cable

Belden has many variations for mic cable. is a quick list I found. We used something like Belden 8428 for broadcast radio work. Mark AD5SS On Mon, Jan 15, 2018 at 7:46 PM, wrote: > I am remaking my SO2R

[Elecraft] K3S Microphone Cable

I am remaking my SO2R control box cables and I need to purchase quality microphone cable however I am not sure what to get. I am using an electret microphone. I assumed that I would need a cable with a single conductor and a shield but most mic cables that I see have two conductors. Belden has a

[Elecraft] K3S Microphone

Thanks for all the responses. I find them very interesting. The only thing that I'm missing is comments on the Elecraft MH2 Handset. I noticed that the CM500 has two stereo plugs and the mike inputs are mono. I have a Yaesu desk mike but can't figure out the menu settings to use it's PTT

Re: [Elecraft] K3S Microphone

For the KX3, you can build an adaptor or use any old stereo to mono splitter. That breaks out the tip and ring for you. It is quite simple, but I explained it in a blog post regardless. http://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/

Re: [Elecraft] K3S Microphone

Jim, A Yaesu microphone will not work with the K3/K3S unless you construct an adapter to change the microphone pinout. There are no menu settings to accomplish that feat, you must build an adapter to route the AF and PTT and their Return paths to the appropriate pins on the K3/K3S microphone

Re: [Elecraft] K3S Microphone

I have a MH2 as well as a CM500. The MH2 works very well. I use it when my wife and I check into repeater nets so we both can pick it up and transmit. I use it as a push-to-talk switch when I'm using the CM500. (Some day i'll do the foot switch project. Too much time operating, too little

Re: [Elecraft] K3S Microphone

<elecraft@mailman.qth.net> Subject: [Elecraft] K3S Microphone Thanks for all the responses. I find them very interesting. The only thing that I'm missing is comments on the Elecraft MH2 Handset. I noticed that the CM500 has two stereo plugs and the mike inputs are mono. I have a Yaesu

Re: [Elecraft] K3S Microphone

Rewire the mic plug - just remember it is - from then on - only to be used on your K3. It is a 10 minute job - very simple. Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K3S Microphone

Or buy a microphone adaptor on EBay. You can find any type you need there. Brian KB1VBF Sent from my iPad > On Feb 12, 2016, at 7:47 PM, Bill wrote: > > Rewire the mic plug - just remember it is - from then on - only to be used on > your K3. It is a 10 minute job - very

Re: [Elecraft] K3S Microphone

I'm not a frequent phone operator but thought I should at least have a mic so I bought an MH2 when I ordered my K3 years ago. I used it a few times but decided I didn't want to use a hand mic at the operating desk and put it away in a drawer. (I take it when I deploy to Field Day since some ops