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Good morning Brian yes the raduino is connected right, it's the first thing I looked at .. It has never worked! They replaced my motherboard but nothing changed! So only the raduino is left! Before

It is exactly the same. S+M seems the brand. To replicate my board best to use these. Thanks for locating the source. Also buy some 331 for the 30MHz LPF filter.. 4 per board. Raj

Hi, Sometimes the calibrations are off enough to reverse the USB and LSB settings. I assume they were initially set correctly, but somehow get changed. If you hunt around in the messages you will find

I am travelling to India soon and would like to pick. A coupe Bitx40's any idea where I might find any near Mumbai?

Yes USA. Direct copy of FCC part 97 Para. 305. Mike K5ESS Sent: Sunday, October 14, 2018 9:42 PM To: [email protected] Subject: Re: [BITX20] Emissions allowed In Band Segments You didn't specify which

You didn't specify which nation or itu region. This looks like maybe a USA list, no 4m band etc. These nuances do vary some around the world. Curt

Hi Sergio, Have you got the wiring of the Raduino to the Bitx40 main board correct? The brown wire from the Raduino connects to the black wire on the main board connector and the red wire from the

Here are snapshots for 20 and 10 meters after the relays were replaced with the Axicom components. Sorry, I didn’t capture the harmonics profile at 14.2 and 28.8 Mhz before the relay change but

HI All. I believe this radio needs a set of BPFs, GIGO.... Any VKs? Glenn, with a GOOD SA and abilities? I am willing and hoping that you will accept this offer. I will be doing the LPF board, 45mhz

Hello All, I installed the Axicom relays in my uBITX (ver 4) test bed this afternoon and ran tests 3.8, 7.2, and 14.2 Mhz. Here are the before and after snapshots. Yellow is SSB and magenta CW. Pic #1

Yea but changing the relays looks like the real winner here. Joe

Looking at pic #2 seems to me that adding a 47nF capacitor to ground at each coil terminal as Arv hypothesized would make the uBitx a leap close to be legal compliant with respect to the harmonics.

Merci Laurent! This was my first attempt at upgrading the UBITX with CEC code after hacking the 40 with Allard’s so your comments are very helpful. I will go back and look at that code. Finally last

Hello Scott, it seems we ran into the same troubles :) Well, after digging a little in the code, I found that the current release set by default another display that the default 1602: to get it run,

Here is the second shot inside the Axicom 403 that should have been in the previous post...

For those that are following this topic, last night I "dissected" one of the Axicom 403 relays and one of the HFD27 relays.? Here are the pictures of "what's under the hood".? One shot of the HFD27

Plots of the coupling between N/C contacts on either side of the relay (which will include the armature) and what they look like with the addition of a 47nF capacitor to ground at each coil

i agree with Raj and that an excellent "standard" test configuration, for all to use, would be to look at the coupling between the N/C contacts on both sides which would include the relay armature

That?Abracon ASPI-M3015-R68M-T is good for 4 Amps. Some dinky little inductor in an 0805 package would probably do fine at L5,7 A shielded inductor of some sort could be a plus. Jerry

due to the high current capability i assume that this choke is to be used in DC DC converters and not at RF i.e. 45 MHz! Am 14.10.2018 um 18:36 schrieb Gary Hanson: