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i know that m3 screws fit and i measuree the height with the scale in my tools drawer. For those who insist on metric purity, do the math. Anyone got the speed of light in furlongs per fortnight yet?

I have only had my bitx40 for a week but am having lots of fun with it. Great receive audio. My hack for the carrier pulse was to take the PTT from the mike directly into the Raduino (same input as

Ash, Hey, you are mixing Metric with our wonderful SAE Imperial sytem! Ha..Ha.. They are 0.427" long. -- Mike Hagen, WA6ISP 10917 Bryant Street Yucaipa, Ca. 92399 (909) 918-0058 PayPal ID

They are 3mm 0.5 thread.? Metric, and the ones with male stud are not cheap.?? Double female holes are the most common. Mouser or Digikey or surplus vendors would have 4-40 US thread. The distance

m3 thread on half inch stanoffs - f

Hey guys I'm looking to buy some extra standoffs of about the same size that come with the bitx to mount some buck converters. does anybody know what size the standoffs are? Barrett KG5SSO

The LM723 datasheet has some great examples of adding pass transistors to linear voltage regulators for greater output current.? I use an LM723 based linear power supply and while it's inefficient

Sorry, folks, my bad: ... PNP *Collector* to regulator output. Haven't worked with PNPs for so long I forgot - Collector to negative. ... :) 73 all

LOL! When that IRF-510 overloads and POPs, you're clearly wanting the neighbors to know about it, too! HiHi

Lovely! A bit beyond getting there for me - pensioner in New Zealand - but definitely keen to see it happen. Anyone able / keen to shoot video and post (à la HamRadioNow)? or inveigle Gary ?

Hi. Jack W8TEE? I can't read more than half of the emailadress or your PayPal-account. Everything after @ is just dots. I would like to order 3 pcb:s. Can you please email me your paypal name at?

For more current output, try this: Feed the LM regulator via 1 ohm. Feed emitter of 2N2955 (PNP!) also. Take PNP Base to other side of the 1E resistor (regulator input) and PNP Emitter to regulator

I will do a build post on this but, here is my stock BitX40, on what our club is using as 'workstation'.

BitX40 Mods on Display in person... In the spirit of this being a BitX talk group where a lot of sharing goes on.? From the open source nature of the radios themselves to Mr. Farhan’s continuing to

Nice on-line heatsink calulator! ....And, consider that this calculation is for 100% duty cycle. 73, David KB4FXC

I continue to be amazed with the community that has grown around this radio.? I was checking up on bitxmap.com this morning I thought I would share some statistics with the group.? In just over 4

Raj, I just had a look on the below mentioned data sheet. Fromt there ist shuts down if the internal chip temperature reaches 180 deg C, but htis value is not tested in production. The thermal

Jerry, Yes, this will not work with Allards CW. If an nano output is used to unbalance the two diodes may work. I have not tried it. The other thump on rx needs the other fix! Raj

Note that this fix is not compatible with Allard's instructions for using the rig on CW. Also, note that there are two PTT bursts. ? Raj's fix is for the carrier burst that transmits out over the

* Hello everyone, anyone ever thought of replacing the relay by switching to transistor? I made some hopes with this but did not measure the delay of the two switches, it's just an idea!* * Jorge