¿ªÔÆÌåÓý

Date
Fw: Re: [BITX20] BCI Filter
Opps...pressed the wrong key. Source listed below: ----- Forwarded Message ----- From: Jack Purdum <jjpurdum@...>To: "[email protected]" <[email protected]>Sent: Sunday, September 23, 2018,
By Jack Purdum <jjpurdum@...> · #59949 ·
Re: No Signal on uBit-x #ubitx-help
Did you try doing a factory reset on the firmware? I use the CEC firmware and if you push the tuner knob in and turn on radio you¡¯ll get the option to reset firmware by following on screen prompts.
By Joe Puma <kd2nfc@...> · #59948 ·
Re: BCI Filter
A similar filter is discussed on the SoftwareControlledHamRadio groups.io Group | | | | | | | | | | | SoftwareControlledHamRadio groups.io Group This group is for anyone who is interested in using
By Jack Purdum <jjpurdum@...> · #59947 ·
Re: Amplifier chain design - best practices
That¡¯s RV1 in the UBITX to adjust the drive level. RV2 is one of the bias pots for the finals. Skip Davis, NC9O
By Skip Davis · #59946 ·
Re: K5BCQ uBITX Relay Switched LPF/BPF board
Hello Kees, If still available, Please count me in for One complete 6x Kit. I assume this is paypal? Thanks for all the hard work in helping us move into compliance. Gene N2IJF
By Gene Nitschke <genenitschke@...> · #59945 ·
Re: No Signal on uBit-x #ubitx-help
On Sun, Sep 23, 2018 at 03:41 PM, KM4TRT wrote: o reiterate, I have the signal going into the 45 Mhz xtal but nothing reasonable coming out.? I should be getting the filtered 45Mhz signal going into
By ajparent1/kb1gmx · #59944 ·
Re: BCI Filter
Yes I agree. I believe the one I posted is similar, I don¡¯t the values just specs and the configuration is all the same. I¡¯m gonna give the rtl-sdr one a try as it gives you more of 160 plus
By Joe Puma <kd2nfc@...> · #59943 ·
Re: No Signal on uBit-x #ubitx-help
Thanks for the reply. ? I realize that if nothing is going into the 2nd amp that nothing will come out.'I only said that because I have had experience where I could not find a signal at some places
By KM4TRT · #59942 ·
Re: BCI Filter
Hi.? Peter VK3YE did a video using some normal inductors to make a BCI filter. https://www.youtube.com/watch?v=fgQenFJOjr4 73 Nick VK4PP
By Nick VK4PP · #59941 ·
Re: BCI Filter
Would wager that most good LPFs designed today make use of the principles of this article. I¡¯m built many all power levels. The article still holds true. MRM _____ Groups.io Links: You receive all
By MadRadioModder · #59940 ·
Re: BCI Filter
The QST article?QST Feb ¡®78 p22 BC-Band Energy ¡ª A Rejection Filter W3NQN is definitely aimed at diy. Seems like it might be an option that could be added and removed external to the rig as
By ohwenzelph · #59939 ·
Re: Ubitx evolving fixes updated to wiki? #ubitx #ubitx-help
I found a Low Pass Filter board out of a TS-940 Kenwood on ebay for $20. It's good to 100W, selectable via 3 digital lines in 7 bands. The only downside is it's a 24v board. The bands are: 1.5 - 2.5
By Vince Vielhaber <vev@...> · #59938 ·
Re: Amplifier chain design - best practices
On Sun, Sep 23, 2018 at 11:23 AM, ajparent1/KB1GMX wrote: > > Gilles, > I've a factory unmodified uBitx, I wish to remain QRP and not to exceed 5 > watts in emission (SSB). Is a simple modification
By ajparent1/kb1gmx · #59937 ·
Re: Amplifier chain design - best practices
Gilles, I've a factory unmodified uBitx, I wish to remain QRP and not to exceed 5 watts in emission (SSB). Is a simple modification possible? Talk softer.? Or use RV2 to reduce power. Beyond that
By ajparent1/kb1gmx · #59936 ·
Re: Ubitx evolving fixes updated to wiki? #ubitx #ubitx-help
Very cool. I plan to get external filters for the 160 m band. Or, since I really don¡¯t use the higher bands, maybe switch them around a bit. Neat little rig, will do all kinds of cool things for me.
By Gordon Gibby <ggibby@...> · #59935 ·
Re: Amplifier chain design - best practices
Hi, I always heard "like pushing string". It's the same level of frustration. 73, Bill KU8H -- bark less - wag more
By Bill Cromwell · #59934 ·
Re: Ubitx evolving fixes updated to wiki? #ubitx #ubitx-help
Hi Allison, Little details seem to need a lot of refreshing here - as you often point out. I am using my uBitX on the air primarily for CW up through 17 meters (but no QSOs higher than 14 MHz so far).
By Bill Cromwell · #59933 ·
Re: Amplifier chain design - best practices
Hi Allison I have a factory unmodified uBitx, I wish to remain QRP and not to exceed 5 watts in emission (SSB). Is a simple modification possible? thank you to enlighten me 73 QRO and thanks for your
By F1BFU - Fr - 79 · #59932 ·
Re: No Signal on uBit-x #ubitx-help
The second amp is at ~12mhz.? if the LO to the second mixer is not correct then nothing works. The second LO is in either 33 or 57 mhz (check the docs). The chain from antenna in is 14.0mhz
By ajparent1/kb1gmx · #59931 ·
Re: Amplifier chain design - best practices
Henning, Just one more part of the picture but less an issue for lower power. I call that saturation thought its something different.? To many I call that the hockey stick region as it really bends
By ajparent1/kb1gmx · #59930 ·