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what are you using to supply power what is the current draw when transmitting. Have you looked on the wire-up section of hfsigs.com to make sure everything is biased correctly. Let's save a hundred

Dear Unni, Please check IRF510 is drawing more than 1A current, when you speak to the mic. You said already the drive is at Max. Also when you don't speak around 180mA. You can adjust gate bias pot to

Dear OM Farhan, Bitx RX works very good. Only issue when strong signals coming there is no way to attenuate it. I suggest to add a pot, Voltage controlled power supply to RX side of RF Amp(Q1) & IF

tried with ?a dummy load. thus got the output power

Same problem with me also RFvoltage at base of pre driver transistor 200 mv in defective board where us working one 500 mv .

Let's start with the basics. Power supply voltage and amperage. Type of antenna? Have you tried into a 50 ohm dummy load? All hams should have one. Check into a dummy load and report back.

Please read preset to control voltage.

hello dear people, My output power of my BitX 40 is less than 3W while checking an SWR meter. I preset to control volume is set to its maximum. One of my friend have the same problem. Waiting for the

I tried using the baofeng electret mic, jumping leads to go right to the consensor so the ptt and mic dont share the same ground and if i whistle into the mic it puts power out but not while talking.

Hi Roy: That's sincerely appreciated, Roy, but not necessary. Instead, give an extra dollar to your favorite charity, or the next time you're at a bar, buy a drink and raise a toast to K&R and Farhan.

I agree that we should try to use the best time for propagation.? However noise levels and propagation vary so much, the best strategy for QRP is always going to be jump in when conditions are good.

Jack's Book https://www.amazon.com/Beginning-Arduino-Second-Learn-Programming/dp/1484209419/ref=sr_1_1?ie=UTF8&qid=1493747607&sr=8-1&keywords=beginning+c+for+arduino

I think this is a great idea, and I intend to give it a try now and then. But being a QRP activity, we might want to reach for the maximum advantage. Selecting a time near dusk in every time zone

Could anyone mentioning a book ...PLEASE provide the name of the book...it would be very helpful ! Thank you walt

Jack, for those people that may have a copy of your book and would like to make a direct contribution to you for your unrealized financial benefits, do you have a PayPal account we contribute to? I'm

Great, certainly better than nothing! I cringe every time I take my KX2 outside and it might rain... Hopefully I will be able to write the code to drive the DDS module from the keypad... Gil F4WBY.

Hello, I have found that document whiles ago describing how turining hte bitx20 to à 40m band usage. 73! Jeremy F4HKA iam74@...> wrote:

This sounds like a fun event. I?ll try to remember to give it a try.? Chris WS5B

I first grounded the heatsink. Then i could understand my problem. Now it is not grounded. But IRF 510 is not available here. I can use only 530. what should i do? It stil burns

One person reported that the heat sink was grounded out on the PCB and they had to fix that before the problem was solved. I suggest you check that. The schematic is available on hfsigs.com, so check