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Guys, i was travelling the whole of two weeks. living with a thinkpad and two changes of cloths give u a lot of perspective on homebrewing. there are a number of very interesting issues that have

I too have the same problem, maybe worse because I'm using a VOX driving my switchover relays and it affects the VOX setting. My fix for the symptom was to add a relay and switch the speaker lead

Hi, I have the same experience. I thought it has someting to do with the way I switch over, three wires with clamps between the circuit and a switch, but it seems that it is a timing problem? So now

Progress at this end is slower than hoped but the rx is now working very well. Two minor points. 1. The middle section of the band pass filter needed a bit more reactance. An extra 10pf across the

Dear Ted, Hi! I may not go in for direct manufacture or sale of these boards. Plan to hand over the final artwork to VUQRP group for distribution. It may be availble but at a later date. I have

This sounds interesting. Have you thought of taking orders? Ted N3Ted 8/23/04 9:48:51 PM, Rahul Srivastava <vu3wjm@...> wrote:

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /BITX 20 V1 /btxv1.pdf Uploaded by : vu3wjm

OT: MESSAGE FOR ARV EVANS: Sorry to all the group for this message, I am trying to communicate with Arv K7HKL but I am failing to do so via ordinary email. Arv, I think that when I created the

Little progress here. My BITX20 is essentially complete (see my photos under G0UPL directory) and awaits debugging and alignment. I have very little spare time, and too many other projects going on

Jay Quite a lot to go at here. 1) The most likely reason why the vfo stops oscillating as it approaches full mesh is that the fixed and moving plates are coming into contact thus shorting the

Hello all, I have successfully got the VFO working for the BITX20. However some questions remain, wondering if I can get some help, comments and advice from the group: 1. The coil has 115turns. I

Dear Friends, Hi! Here we wanted to take up BITX 20 as a group project for VUQRP. I have laid out a board based on original Farhan layout as well as ones posted here. PCB measures 6.5 X 4.25

Chris CONGRATULATIONS on your new BITX17 and QSOs with it. 1000 Km on 150 mw...that is about 6000 Km per watt. Think what you can do when you get the full 8 watts on the air! 73s Arv - K7HKL

Hi all, last weekend, I erected a dipole antenne for 18 MHz. I had finished the BITX17 without the IRF510, the output power of the used 2N2219 is about 150 mW. Some tests with PA3CWS (distance about

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /MODIFICATIONS/LED Power Indicator.pdf Uploaded

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /K7HKL/L-Meter(Mark-1).pdf Uploaded by :

Chris Output is close to 1 watt with a 4 ohm speaker. Decrease the resistance of the 2N2222 collector resistor to allow more forward bias on the NPN power transistor and you can push the power up

component AF amplifier This amplifier is more in line with the whole circuit (the suggested 2N2222 can also be a BC107?). Does it give about the same audio output as the LM386 or less? On a quit

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /MODIFICATIONS/BITX20 (K7HKL AF Amp) Version.pdf

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20 group. File : /MODIFICATIONS/clear LF.doc Uploaded by :