Re: Should I wait to buy a ubitx?
Sorry meant to say don¡¯t would not recommend running an amp.
toggle quoted message
Show quoted text
On Mar 8, 2019, at 7:02 PM, bill richardson via Groups.Io < ng1p.bill@...> wrote: I have built 3 so far and have had great luck with no problems at all. My first 2 builds was with the V3 boards and both had great audio on RX and TX. I just got the V5 board and it has worked equally as well as the V3 boards. I skipped the V4 boards due to the audio issues. I¡¯d feel completely safe getting the V5 ubitx. As long as you:
1.) don¡¯t over drive it turn down vr1. Just using one of the online SDR RX sites you will be able to adjust until your with in 3khz bandwidth. Since you are looking at QRP field ops this should be fine as I would recommend running an amp.
2.) get the BFO adjusted to minamize carrier. This is the case on all versions of ubitx¡¯s
3.) Take your time wiring up the radio and double check your self.
4.) most important have fun building!?
73 Bill ng1p Expectations?? ? ? Mine were to be able to purchase a kit, build it and have a working QRP HF rig (much like I did when I bought a HeathKit back in the ¡®60s).? ? I purchased the V4 board and the case, spent several hours putting it together only to find that I have no audio and need to add an amplifier.? Also have problems with the display and encoder switch. ? Not sure that I will go back and finish this kit or not.? What I received was not what I was led to believe ¨C the board did not work.??? ? No, I will not purchase a V5 board because I have no certainty that the V4 problems were fixed or what new issues were introduced. ? There are a number of enhancements on the market that address all of the issues I have, but all there is an associated cost in money and time that is discouraging. ? I wanted something small, that I could use on field day as well as while traveling.? This is not it. ? sorry ? Derrick ? From: [email protected] <[email protected]> On Behalf Of Doug W Sent: Friday, March 8, 2019 5:31 PM To: [email protected] Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx what are your goal and expectations? ? ? From: [email protected] <[email protected]> On Behalf Of Doug W
Sent: Friday, March 8, 2019 5:31 PM
To: [email protected]
Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx
what are your goal and expectations?
?
--
|
Re: Should I wait to buy a ubitx?
I have built 3 so far and have had great luck with no problems at all. My first 2 builds was with the V3 boards and both had great audio on RX and TX. I just got the V5 board and it has worked equally as well as the V3 boards. I skipped the V4 boards due to the audio issues. I¡¯d feel completely safe getting the V5 ubitx. As long as you:
1.) don¡¯t over drive it turn down vr1. Just using one of the online SDR RX sites you will be able to adjust until your with in 3khz bandwidth. Since you are looking at QRP field ops this should be fine as I would recommend running an amp.
2.) get the BFO adjusted to minamize carrier. This is the case on all versions of ubitx¡¯s
3.) Take your time wiring up the radio and double check your self.
4.) most important have fun building!?
toggle quoted message
Show quoted text
On Mar 8, 2019, at 6:43 PM, dey < deyoung1@...> wrote: Expectations?? ? ? Mine were to be able to purchase a kit, build it and have a working QRP HF rig (much like I did when I bought a HeathKit back in the ¡®60s).? ? I purchased the V4 board and the case, spent several hours putting it together only to find that I have no audio and need to add an amplifier.? Also have problems with the display and encoder switch. ? Not sure that I will go back and finish this kit or not.? What I received was not what I was led to believe ¨C the board did not work.??? ? No, I will not purchase a V5 board because I have no certainty that the V4 problems were fixed or what new issues were introduced. ? There are a number of enhancements on the market that address all of the issues I have, but all there is an associated cost in money and time that is discouraging. ? I wanted something small, that I could use on field day as well as while traveling.? This is not it. ? sorry ? Derrick ? From: [email protected] <[email protected]> On Behalf Of Doug W Sent: Friday, March 8, 2019 5:31 PM To: [email protected] Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx what are your goal and expectations? ? ? From: [email protected] <[email protected]> On Behalf Of Doug W
Sent: Friday, March 8, 2019 5:31 PM
To: [email protected]
Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx
what are your goal and expectations?
?
--
|
Re: Should I wait to buy a ubitx?
Expectations?? ? ? Mine were to be able to purchase a kit, build it and have a working QRP HF rig (much like I did when I bought a HeathKit back in the ¡®60s).? ? I purchased the V4 board and the case, spent several hours putting it together only to find that I have no audio and need to add an amplifier.? Also have problems with the display and encoder switch. ? Not sure that I will go back and finish this kit or not.? What I received was not what I was led to believe ¨C the board did not work.??? ? No, I will not purchase a V5 board because I have no certainty that the V4 problems were fixed or what new issues were introduced. ? There are a number of enhancements on the market that address all of the issues I have, but all there is an associated cost in money and time that is discouraging. ? I wanted something small, that I could use on field day as well as while traveling.? This is not it. ? sorry ? Derrick ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Doug W Sent: Friday, March 8, 2019 5:31 PM To: [email protected] Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx what are your goal and expectations? ? ? From: [email protected] <[email protected]> On Behalf Of Doug W
Sent: Friday, March 8, 2019 5:31 PM
To: [email protected]
Subject: Re: [BITX20] Should I wait to buy a ubitx? ? On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote: should I wait to buy a ubitx
what are your goal and expectations?
?
--
|
Re: Should I wait to buy a ubitx?
I want to work qrp out in the field... I want to have a worry free experience? without worrying about a threat of citation from the FCC. Since this equipment is sold commercially,? I fear reprisals could occur, and I am looking for solutions to those problems prior to ordering.
Kelly K5AID
|
Re: Should I wait to buy a ubitx?
On Fri, Mar 8, 2019 at 02:36 PM, Kelly Mabry wrote:
should I wait to buy a ubitx
what are your goal and expectations? ? --
|
I have been looking for a different gui for my 3.5 as the CEC version is nice it does not fill the screen.. please keep me posted when the bugs are out? Thanks K3BO
|
Should I wait to buy a ubitx?
Hi everyone! The question is should I wait to buy a ubitx due to the problems with version 5 with regard to suppression?? I have the Nextion display and case on order and have around $150 invested in it so far.??
Thanks & 73,
Kelly K5AID?
Sent from my Verizon, Samsung Galaxy smartphone
|
Looks good. I made a few adjustments and fixed the mem screen. I want to run it on my rig before I send it back up. Are you aware of any other errors?
|
Thanks, Curt. You've triggered some valid input here.
Here in Enzedd we have have (at least) two celebratory event that correspond : SKN (Straight Key Night ) and QLF ( Cue Left Foot). Enjoy.
Never really used CW myself, though I had a top-notch teacher (George Studd ZL2AFZ, DX Ranger). Grade I ticket here was VHF-only, and that kept me entranced for years until a neighbour needed an HF link to the bush (possum-trapping on the Wild West Coast). I made a pair of 80m rigs in ammo cans - AM & CW Tx, DC Rx - and we got our Grade II together (10 wpm IIRC). Never went beyond that, my best DX was from there, Aussie on 2m (Tropo duct).
Just a FYI, all: 'there' was 1000'ASL (and not much more inland), and the duct corresponded with a huge intense anti-cyclone (atmospheric high-pressure zone) over the Tasman Sea. I swung the Yagi North and the duct took me to the 'top' of the North Island. Wish I was still there in some ways: an even greater 'High' has persisted here for a month or more. Tropo to Oz should be real 'bonza'! Unfortunate side-effect: climate change. Drought in some places, crops and livestock suffering, livelihoods devastated. Aussie's bushfires now happening here!
73, all, de ZL2DEX
|
Re: AGC Pre-Oders are in and built!
Looking forward to your results as well! Our hope is that it is still drop I'm compatible with the V5 board and from the pictures we have seen it should be. However like any honest person we definitely want to make sure that it is right before advertising it as such!
During installation on the V5 if there are any questions please just ask!!!
--
Tim Keller - KE2GKB
|
Re: New V5 with poor carrier suppression.
Thanks Jim! ?My vacuum tube SB102 was built the same way. ?I¡¯m guessing this accounts better for other unsymmetrical things in the circuit outside the diode¡¯s
toggle quoted message
Show quoted text
Different radio, different design. But on my early Bitx40 the PCB pads were there for two diodes and a pot. The Bat54 was fitted in place of them. I don¡¯t remember how much but I had quit a bit of carrier. After removing the Bat54 and installing
two rendom 1n4148 diode and some small value pot from the junk box I was able to null the carrier to 0.?
I can just say it worked for me.?
|
Iz
I would start with a pair of fixed-gain op-amps to bring the voltage up to where your test equipment
can measure it reliably.
Arv? K7HKL _._
Good piece of information. How can I measure 50mV in the audio frequencies? I have a Velleman 0-100mV 1khz audio generator kit, but a cheap multimeter does not show a thing. I hope I don't need an oscilloscope or an SA for measuring it...
|
Re: Sending perfect CW via PC
Brutus, I have rechecked. And I stand corrected: the simple optoisolated interface (4N25 and usb-serial converter) works perfectly too. Evidently, when I checked this before, an audio jack adapter was not doing a good contact. Damn!
Il 05/mar/2019 15:56, "Brutus Laurentius" < markhamfarm14@...> ha scritto: I wired my ubitx for a straight key so I could use my preferred (AA0ZZ Ezkeyer from 4SQRP) keyer with it.? Later, for fun, I tried interfacing it via a simple 4N25 for DTR via USB serial keying, and it worked fine.? Ditto for a winkeyer clone.? ?I think the difference is that I had wired mine for a straight key in the first place?
|
Re: New V5 with poor carrier suppression.
Different radio, different design. But on my early Bitx40 the PCB pads were there for two diodes and a pot. The Bat54 was fitted in place of them. I don¡¯t remember how much but I had quit a bit of carrier. After removing the Bat54 and installing two rendom 1n4148 diode and some small value pot from the junk box I was able to null the carrier to 0.?
I can just say it worked for me.?
|
Good piece of information. How can I measure 50mV in the audio frequencies? I have a Velleman 0-100mV 1khz audio generator kit, but a cheap multimeter does not show a thing. I hope I don't need an oscilloscope or an SA for measuring it...
Il 07/mar/2019 07:35, "Ashhar Farhan" < farhanbox@...> ha scritto: the ubitx has more gain on tx as well as rx than the previous boards. this is due to the BFR93w transistors in the 45 MHZ IF in place of the 2N3904s.? The carrier and spurs will be appear to be higher if the tx gain (controlled by RV1) is running flat out. it is best to reduce this to about 60% of the full gain. A way to know this is to connect a 50 mv audio signal to the mic, transmit SSB on 7 MHz and reduce the power until it is around 7 watts.
- f
|
|
|
Thanks will check and reply.
|
Subhash,
L2 is not properly soldered, check continuity on the board and resolder. If that does not help
check L1.
Raj
toggle quoted message
Show quoted text
At 08/03/2019, you wrote: I am trying to fix the recieve on my bitx40 but it wont recieve until i touch the L2 coil near the relay. I dont know whats the problem. Help would be greatly appreciated.
Regards
VU3EDU
SUBHASH HERUR
|
Others like myself have wished for a TFT file for the 3.5" Nextion screen that fills the whole space. While there are a few out there, they don't mirror the "original" format that we know and love (CEC version).?
This is a work in progress though it seems to work well enough to share for further tweaking.? I'm no programmer per se though by using some graphic arts thinking, I've put together the attached. There are a few little errors here and there, so, if you know more than I do or have learned something I've not fell over yet, please feel free to add corrections or tell me how to correct it.? For instance: on the page for recalling a memory entry to VFO, there is a button that should say, "READ" (top row, left of the Frequency mask). The active button is there but it's behind the background fill picture, and needs to be brought to the foreground.
This started as the widely-available "3.5" screen file that doesn't fill a 3.5" screen, and was manually increased by 150% on the horizontal axis and by 133.3" on the vertical, picture by picture and block by block, with things shifted around for spacing and fit - and the font sizes increased in most cases.? It pays to be anal-retentive and O.C.D. just sometimes.
Have fun!
Ted
K3RTA
|
Re: AGC Pre-Oders are in and built!
I have ordered the AGC board and looks to arrive on Monday. I will let you know if it will work. Comparing my v5 board to a V3 board it is the same size and layout so it should work. That¡¯s my hope. Will let you know for sure Monday.?
toggle quoted message
Show quoted text
On Mar 8, 2019, at 12:38 AM, knightsbdh@... wrote: Hi Tim
I have a v5, am happy to test. Send me the file to print and I'll take some photos.
Cheers
Ben
|
Raj vu2zap
Ted