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Gordon, Small Loops. That is not entirely true.? There are a number of loop characteristics that contribute to the low noise as they very often have a higher signal to noise.? The biggest factor is

Don't know if this will help but when I assembled my unit I accidently staggered the display pins. I only found this out when I assembled a case for it and my mounting holes were off. Another area is

OK, so we won't use the 3 digit display for any indication because of the hassle of shielding it and we don't want extra noise generated if we can help it. We did shield one and the noise drop was

" For the lower bands 160-40 unless huge they are chronically inefficient. They work as well as a loaded 8ft mobile whip but are self contained not requiring radials. " Allison, thank you for putting

Greeting, If I may I have a few questions about my Bitx40.? My display will only on power up will show "Raduino v1.01 and will stop there.? I have checked the purple wire going to the center wiper

Jerry, The more you stock and hold for sale the more costs. Holding material aka stock is sunk money and the cost?is sufficient to mount up fast.? Better to build one or a few things and do it

Hello all, I'm a new member of this group. My uBITx was ordered early feb., sent early march and arrived early may in YO. Due to the "care" taken by the Romanian post, no information about the arrival

I guess I would be able to obtain the 1000mi/W award as I had contact with Fiji from the Texas/Mexico border at the Gulf Coast. But as I am fairly new (6 months) still have to learn about those

Hfsignals is set up to autostuff the surface mount parts with hundreds of boards at a shot. Then it's handwork to wind the coils and add the through-hole parts, align and test. To do an accurate job

Something to do on cold winter nights, eh? tim ab0wr "K9HZ" <bill@...> wrote:

My call is fire up on 40 and call CQ!? Someone is likely to answer.? ? If you don't? you never know if the propagation has happend.? I find a lot of South Americans on 10M during the day, but

Have u thought about a magnetic loop? Or an end fed dipole,? I use one but I'm only up about 10 ft. And with my lot I zip zag the wire. Also use a homemade vertical with tapped loading coil on bottom.

You can across the bands but you need a deign impedance of a about 3-5 ohms and enough loading? to keep it down there which means a heavier driver and a different driver output transformer (something

I believe there are some images missing from the document?

Wow 940pf. ?You can design for it to work at 30 MHz but thats not gonna work at 3.5 or 7.0 MHz without switching parts in and out. ? ? *Dr.?* *William J. Schmidt - K9HZ *

I haven't seen a lot of flames here regarding imprecise measurements. If you have the Harbor Freight digital voltmeter (often free with any purchase), you are about as well armed as most folks here in

Allison, I tested at 10 meters and output was a dismal 5.47w.? I also changed the pre-driver to a 2N2219 and paralleled resistor R 88? 22 ohm with a 10 ohm.? There was no difference in performance

BITX QSO Afternoon/Evening, Sunday, May 20, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere. Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters! This is a

Roxie, You forgot us who also like to play with the radio hardware.... ;-) The idea of a split is usually bad as the hardware/software do not see the user issues and maybe the user gets to see what

Here is a link to a Raduino replacement at easyeda.com https://easyeda.com/nikpolini/Raduino-1b3e0cb579154514ad2e014b83346b58 You can down load the Gerber files and possibly import to your CAD