Bitx20a assist - QRP Forum at eHam.net

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eHam.net Forum : QRP : Bitx20a assist

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Bitx20a assist	Reply
by KR6N on March 17, 2009	Mail this to a friend!
Can anyone tell me what the dimensions of the case for the Bitx20a qrp ssb transceiver are (W x L x D). Thanks Ed Schaff KR6N Pensacola, FL

RE: Bitx20a assist	Reply
by VK2PCR on August 14, 2009	Mail this to a friend!
Good question! I have just ordered a Bitx20 kit from Doug Hendricks, and have looked a bit at enclosures. I had a look at the qrpkits online manual (great construction manual!) to see if I could find the size. Until I have the board to measure, the best suggestion I have is to compare the size of the board to the size of the Dig Dial (given as 1.1" x 2.1" - about 53mm). If you compare that to the board as installed in a pic in the manual, I estimate about 130mm for the board width. Hope that helps some. (I just got my Standard - General to you guys- licence - and am looking forward to receiving the kit. I just didn't want to go out and buy a whole lot of black plastic radio gear. To me that is not what the hobby is about).

RE: Bitx20a assist	Reply
by VK2PCR on August 14, 2009	Mail this to a friend!
What is available, and what do others use, as a mike for the Bitx20?

RE: Bitx20a assist	Reply
by M1KTA on August 16, 2009	Mail this to a friend!
Originally tried an ex-CB fist mic as I believe plenty of constructors did I use a PC computer desk mic (Technika... cost couple £/AUS$ in computer shop). Use it with the MKARS-80m ssb rig too. 72 Dom M1KTA

RE: Bitx20a assist	Reply
by VK2PCR on August 19, 2009	Mail this to a friend!
Thanks Dom. I will have a lot of work to do as well as the transceiver. Have to build power supply, antenna etc. I've seen some info on the MKARS-80 rig, looks pretty good too. Though something for the 40 meter band first makes sense (don't know what 40m is like where you are, but in Oz it has a lot of old blokes talking about their medical problems). As a Std (Gen) call I don't have 30, 17, 12m privileges - good incentive to sit for my Advanced licence. 73s Phil, VK2PCR

RE: Bitx20a MIC.....SUPER MOD!!	Reply
by 5R8GQ on August 19, 2009	Mail this to a friend!
Phil: I have had spectacular success, 12+ watts out, clean signal on a scope and on the air, using the: Cobra HG-M75 4-Pin CB 2 Transistor Mic w/Gain available just about anywhere CB stuff is sold retail and EVEYWHER it is sold on the Interweb! It has a two transistor amp powered with a 9v "on board" (inside mic) battery and adjustable gain pot on the mic. I got mine for only $15.xx w/shipping somewhere on the net and it is a very well made mic. Were it not for the 4 pin connector you couldn't tell it was a CB mic. IN USA you can get it at FRYE's Electronics. Send me a note to my email and I will forward you the mic pinout and hookup instructions for the BITX20A. Just replace a few resistors in the mic (really easy stuff) and you will LOVE THE WAY IT SOUNDS ON THE AIR. Just leave it set between #4 and 5 on the rotary scale of 0-9. Your mileage may vary. Works as a GREAT RF Output control too!! This is not a hack job. For you technical types, mic amp schematics AND hi res photos are included in this 7 page file. You DONT need to be a technical Type to hook up the mic, either, hihi!! Sorry, dont know how it works on the MKARS80 yet. I am building that rig now too, and boy howdy, would LOVE it to work in the same manner. Send me a note. 73 and have fun, Ken Pendarvis AD6KA / 5R8GQ kenp@socal.rrcom

RE: Bitx20a assist	Reply
by AH6GI on August 22, 2009	Mail this to a friend!
"Can anyone tell me what the dimensions of the case for the Bitx20a qrp ssb transceiver are (W x L x D). " The case? The Hendricks BOARD is exactly 3.5 x 5.5 inches. I'm using the LMB Collins-look cabinet. It's (W x L x H) 5.5 x 7.5 x 3.5 inches. <http://www.lmbheeger.com/product_photos/co_series.jpg> It's really pricey $49.65 but I got it for five bucks at a hamfest. It'll be a teeny KWM-2. de ah6gi/4

RE: Bitx20a assist	Reply
by KG4RUL on August 22, 2009	Mail this to a friend!
The Hendricks case, overall, is 6"W x 2 3/8"H x 5 1/8"D. The upper half of the clamshell case overhangs, front and rear, lower half. The lower half is 5 7/8"W x 2 5/16"H x 4 3/4"D. Here are some pix: http://i216.photobucket.com/albums/cc296/kg4rulphotos/BITx20/CasePartiallyAssembled.jpg http://i216.photobucket.com/albums/cc296/kg4rulphotos/BITx20/CaseShowingOverhang.jpg http://i216.photobucket.com/albums/cc296/kg4rulphotos/BITx20/LowerHalfCase.jpg http://i216.photobucket.com/albums/cc296/kg4rulphotos/BITx20/UpperHalfCase.jpg

RE: Bitx20a assist	Reply
by N4LGH on September 7, 2009	Mail this to a friend!
The LMB Heeger cases are very cool. I've settled on these cases from Circuit Specialists; they're very nice and less expensive. http://www.web-tronics.com/emsermulstee.html Hope you all do well with your BitX Tracy N4LGH

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