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I built my Bit40,? but was looking to find some specifications.? Is there a good list of specifications???? The HF Sigs site has some for the uBitx but missing on the Bitx40.?? For instance

Hi, If I recall correctly the forty meter filter also passes 30 meters, and the 20 meter filter includes 17 meters. The materials are starting to arrive for my external filters and I intend to build

sweep of L17, L18, L19

Yes, corner is set a high so it can be used on 60m too.

Aha!!!! photo of "80 meter" bandpass filter on my ubitx ...L20, L21, L22 as swept? ..corner frequency is closer to 6 mhz than 4 Jim

Hi, I try to explain that happend to my uBitx, in 40 m dont have trouble , the signal its strong, but when advance in superior bands 20, 15, 10, the noise its very low, I supose was the antenna, but

Punctuation, lad! For lack of a comma, it reads as JW4JM. Still, a neat call. My previous, a selection from those available, was ZL3LH (different region, and vanity calls not implemented in

Allison I may have needed to define my terms better. It was not -30 dBc but -24 dB referenced to one of the two tones used for testing. That is a figure of merit that I normally use to set drive

Though there is no problem using any Arduino board as a programmer (with proper external wiring), I highly recommend using one of the cheap USB-ISP with the 6-pin connectors (see photo below). [image:

The cap you fitted is acting as a top cut tone control so you will loose some top end clarity.you could try different values as there will be a trade off between feedback from transmission being

HI, Here is a picture of my Nano a Nano ISP programming setup. I used the ISP headers with the pins connected one to one, except for the orange wire connected to pin 10 on the Nano programmed as an

I wasn't having that problem until I installed the AGC board.? Then, when it happened, I soldered a 10nF ceramic capacitor across the audio pot from high side to ground.? The feedback went away, but

Glad you're back Gordon. Bet of luck with your recovery. 73 Dennis W7DRW

"brown lead to the center"

Benjamin, The wall warts are not all well filtered, so that probably accounts for the hum.? It seems like you audio may not be the problem, because the receiver is naturally quiet if the grounding is

Check the potentiometer wiring, there is some mistake on first wiring (inverting high and middle) 73 - remi f1mqj —- vérifier le c?blage du Potentiomètre, un schéma de c?blage inversait le

I ve at least 3 Chinese nano boards from various sellers, working fine with arduino ide and windows 8.1 (the only problem I have : it need to be run as administrator -giving strange messages when

I have come out of surgery now, and I think I’ll be home tonight and may be able to construct voltage divider on my Heathkit Cantenna to get a attenuated signal that I can further attenuate on

As a linux user the whole problem of drivers is actually transparent for me. For Win10 it was a major pain and I went with a (real not clone) FSTV232-3v3 cable to sidestep the whole thing.? It