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Microphone choices
Kelly Mabry
Hi Mike,? a lot of ideas abound; some are repurposed cb microphones,? some are home brewed with what's in the kit, I ordered a?Uniden BC645 4-Pin Microphone for CB Radios, electret mic, going to wire the 4 pin panel plug to fit the microphone.? Others have changed out the 4 pin to match their 8 pin QRO rigs. I would dig around the ubitx.net site and hfsignals.com ... Somewhere I? remember that a dynamic mic needs a tantalum cap on the input. But in reality there are even 3d printed mic housings to assemble a mic. Check out?https://shop.kit-projects. They have mics and paddles!
73, Kelly K5AID? |
My two cents...
First I've tried with a karaoke mic and a audio console? Good: I get 10W of power without effort, talking quietly Bad: The signal transmitted is extremely low pitch (very dificult to copy).? Now I use a PC mic (purchased for a few bucks). PTT is a button installed on it. Good thing: It's a very cheap and small desk microphone (3 USD),? Bad thing: It's a low gain mic, get 4 or 5 watt only @40m |
If you can't afford a Behemoth microphone (hi hi) you may try high sensitivity (around - 24db) electrec elements you may find at large vendors (Mouser etc). I opted for dynamic elements (not for karaoke) plus a homemade vogad compressor. Il 10/apr/2019 13:22, "David - CA3DPV" <david.parra@...> ha scritto: My two cents... |
Even if one is rich, i suppose that there is no point in investing in mics that zerve high end systems for ham use. We dont really need more than 0.3 to 3Khz at the maximum Regards Sarma vu3zmv On Wed, 10 Apr 2019, 5:04 pm iz oos <and2oosiz2@... wrote:
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David Wilcox
¿ªÔÆÌåÓýLet¡¯s not forget Goodwill and Salvation Army thrift stores. ?Was in one yesterday and mics, etc., were just sitting there collecting dust. ?Super cheap too. ?Lots of parts sitting there if one need unsoldering practice, and speakers up the Wazoo...... if you visited weekly you could build a ham station and a junque box full of parts in a month or so. ?Who said ham radio was expensive?Dave K8WPE since 1960. David J. Wilcox K8WPE¡¯s iPad On Apr 10, 2019, at 9:32 AM, N8DAH <Dherron@...> wrote:
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The obvious choice is the stock electret button mic. I usually get subjective comments of being great sounding.Have a desk mic made from a weighted desk lamp and some flex tubing. Used the stock switch opening to put momentary contact switch. For a portable hand mic I used an old cb mic and took out the stock element after finding it too weak and replaced the element with another electret button glued into the space. The mic lost a lot of weight.
If you are going to travel with the radio consider make sure the raduino board is securely bolted in and not just hung on the connector. I make a 3d printed plate that does that. |
Michael Goins, k5wmg
Thanks to all for the mike recommendations. I have a CM-500 headset here I think I'm going to try out first as I've had great reports with it in the past. Going to love chasing DX with this little rig. Mike, k5wmg On Thu, Apr 11, 2019 at 5:13 AM David Wilcox via Groups.Io <Djwilcox01=[email protected]> wrote:
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I use this ,from {Pacific Electret Microphone kit.Works great Dale/ka5who On Fri, Apr 12, 2019 at 2:03 PM Curt M. <Kc3hjp@...> wrote: I bought a new old stock Cobra CB mic for $5 and gutted it.? I used the original switch that came with the mic and used the element that came with the uBitx kit and put a 4 pin mic connector on the cord.? I get good audio reports with the stock element. |
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