I have a ver5 board that I ended up loading the 1.08 radio control software in. the problem is in the BFO it was with the original software 11.055.3 but now it keeps resetting to 11.997. If I turn it back to 11.888 and hit PTT like it says shouldn't be that when I go back to calabration mode instead of returning to 11.997?
Help and suggestions appreciated
John
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I did try Aliexpress, ebay, but there must have been a glitch because I only got nothing found and i am sure I entered the search word correctly These things happen Thanks all for your help and suggestions. Regards Lawrence?
On Sat, Mar 9, 2019 at 4:04 PM MVS Sarma < mvssarma@...> wrote: You should try aliexpress, NOT alibaba.
On Sat, 9 Mar 2019, 8:20 pm Lawrence Galea < 9h1avlaw@... wrote: Thanks all Funny thing is that when I searched on ebay. bangood etc nothing came up.
Only found some on Alibaba but 10 including shipping cost half the price of the μbitx. Again tnx all. Lawrence
On Sat, Mar 9, 2019 at 11:23 AM MVS Sarma < mvssarma@...> wrote: The item i get is bfr93a that has upper limit of 12V ?BFR93w as made by Siemens has 15V and is in sot323 package , perhaps close to sot23 we an solder. Please search for it.
On Sat, Mar 9, 2019 at 3:33 PM MVS Sarma via Groups.Io <mvssarma= [email protected]> wrote: ?I had ordered on this seller
?but please see the datasheet.BFR93a? supply is 12V ?Hence we should not try 13.8 , little extra . No regards sarma vu3zmv
On Sat, Mar 9, 2019 at 12:41 PM Lawrence Galea < 9h1avlaw@...> wrote: Does anyone know of a decent supplier for the BFR93W? Or is it possible for hfsignals to make them available to those who purchased the μbitx? Regards Lawrence
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Iz while I am a decent operator - SO2R is way over my head.? I am using the same LC design as v5.? the inductors were found in a junkbox - they are coilcraft (and not a small footprint) so I imagine them to have a reasonable Q.? I modeled them with a Q=70 -- it provides the rejection I need assuming filter lands reasonably well on frequency.? I need about 10 dB to clean up.? okay here are my stock values for spurs --
| Band |
CW |
SSB |
type |
| 80 |
-41 |
-45 |
? |
| 40 |
-30 |
-42 |
harmonic |
| 30 |
-30 |
-30 |
harmonic |
| 20 |
-49 |
-48 |
? |
| 17 |
-45 |
-42 |
? |
| 15 |
-43 |
-35 |
mixer |
| 12 |
-47 |
-33 |
mixer |
| 10 |
-55 |
-34 |
mixer |
I have a relay daughter board and the LC filter installed.? I don't have a spectrum analyzer but we measure them at our club session, I am confident on the lower band harmonics but uncertain on the upper band spurs.?
Now my rig is a bit haunted -- it does not like the 45 MHz bidi messed with on the antenna side.? anything too close to the amplifier messed with 7 MHz CW.? first I tried a xtal filter that our club kitted.? bad.? I put the LC in the v5 position -- bad also.? so it is moved closer to the antenna, only in the transmit path - 40m CW is good again.?
I am happy enough with the uBITX v4.? I figured out why none of the AGC circuits were working - I was putting them in series with the volume control, they need to be in parallel.? (I went to EE school to mess up simple things like this, glad my boss isn't on this list!).?
My theory on v5 was that it would push the spurs around, not necessarily cure them all.? Let's see as more are measured.?
Thanks for text.? 73
Curt
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Re: How to get 5W on 10m?
Ok, thanks for the hint, I certainly need it. I will start with simulating a dummy load hihi
Il 09/mar/2019 22:18, "James Lynes" < jmlynesjr@...> ha scritto: Also, search for LTspice tutorials. LT had one called LTspice IV Getting Started Guide. And another good one is LTspice Guide, sorry but can't remember where I found that one.
James
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Re: How to get 5W on 10m?
Also, search for LTspice tutorials. LT had one called LTspice IV Getting Started Guide. And another good one is LTspice Guide, sorry but can't remember where I found that one.
James
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Memory Manager V1.08 baud rate
Hello I have a new V5 board and was trying to update everything. I uploaded the latest control software to the radio but now cannot communicate with the memory manager. When I try to set the baud rate to the required? 384000, it is not an option in the software. Am I doing something wrong or have I missed something?
Thanks for help and suggestions
john
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Re: Gigaparts selling ubitx!!!
I certainly? will!
Kelly K5AID?
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Re: Gigaparts selling ubitx!!!
If you order off hfsignals choose DHL. You will have it in about 8 days in the USA. Enjoy
Candace Wafford (GigaParts) Mar 9, 12:50 CST
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message -------- Date: 3/9/19 9:46 AM (GMT-06:00) Subject: Re: [BITX20] Gigaparts selling ubitx!!!
I agree.? I did send a message to them asking what board they are selling...but unless I get a response, I will order via hfsignals.?
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Re: Gigaparts selling ubitx!!!
Candace Wafford (GigaParts) Mar 9, 12:50 CST
Sent from my Verizon, Samsung Galaxy smartphone
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-------- Original message -------- From: "Kelly Mabry via Groups.Io" <kmabry2007@...> Date: 3/9/19 9:46 AM (GMT-06:00) Subject: Re: [BITX20] Gigaparts selling ubitx!!!
I agree.? I did send a message to them asking what board they are selling...but unless I get a response, I will order via hfsignals.?
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Which 45Mhz filter have you used? In the end I opted for the Farhan LPF T filter which is now also embedded in ver5. Checking the most difficult spur produced by a 21mhz SSB signal is way down now! I am too very satisfied with the modded old version, but, Curt, if you want to operate SO2R you definitely need a fresh version 5 too ;-)
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That is for another version of firmware but the connections in question will be the same
Link to firmware home page
This adds cw/keyer and much more and is very worth it once you have a basic working rig, its worth the change.
hope this helps
?73
--
David
?N8DAH
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This is an example of the designer making a thoughtful improvement,? and perhaps finding a good deal on them. They may nudge the clean output power up a little, but honestly I added an LC filter at 45 MHz to address spurious on my v4, and I am still happy with its output power. On receive it might reduce noise figure a little. But if you live with neighbors our background manmade noise even on 28 MHz can be higher than the 10 or so dB noise figure of the ubitx.
I don't suggest putting money or time into this mod, unless you live in the desert with few people around.
Curt
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You can use BFR106, available at Digikey. Same foot print, almist same performane for low signal. Ion VA3NOI -- Ion VA3NOI
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Just received a new Bitx40 kit.? In looking at the wiring instructions I have a question. There is a connector-8pin on one side of the board and another set of pins-16pins on the other side of the board bent at a 90° angle pointing up.? Does anything connect to these pins and if so, what kind of connector?? Also where is the #1 pin on this row of pins.? I also want to add a function switch.? All the pictures I have seen do not show this type of board. I got this kit straight from HF SIGNALS.
Forrest Johnson KC9JFX
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Re: Should I wait to buy a ubitx?
Mee too!
Vince.
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On 03/09/2019 11:56 AM, Jerry Gaffke via Groups.Io wrote: I'd consider myself pretty handy with hot air as well.
As do many in this forum.
Jerry
On Fri, Mar 8, 2019 at 08:02 PM, Brutus Laurentius wrote:
Now, in saying that, I am pretty handy with a soldering iron and hot
air too, along with magnified goggles and good lighting.
--
K8ZW
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Re: Should I wait to buy a ubitx?
Thanks Jerry for the accolade. Hi Hi Terry - KB8AMZ Brimfield Twp, OH USA EN91hd Linux User# 412308, Ubuntu User# 34905,?PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195
On Sat, Mar 9, 2019 at 11:56 AM Jerry Gaffke via Groups.Io <jgaffke= [email protected]> wrote: I'd consider myself pretty handy with hot air as well.
As do many in this forum.
Jerry
On Fri, Mar 8, 2019 at 08:02 PM, Brutus Laurentius wrote:
Now, in saying that, I am pretty handy with a soldering iron and hot air too, along with magnified goggles and good lighting.??
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Re: Should I wait to buy a ubitx?
I'd consider myself pretty handy with hot air as well.
As do many in this forum.
Jerry
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Show quoted text
On Fri, Mar 8, 2019 at 08:02 PM, Brutus Laurentius wrote:
Now, in saying that, I am pretty handy with a soldering iron and hot air too, along with magnified goggles and good lighting.??
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Re: How to get 5W on 10m?
Iz Oos
Many here are users of LTSpice and can help if you have questions.? Feel free to ask
us if you run into problems.?
In addition to demonstrating how existing circuits should work, Spice simulations can
be used for empirical design efforts (try things to see what it does) as an alternative to
complex mathematical design and analysis approach.
Arv _._
Thanks Arv, I will try it! I had installed under Linux via wine so following your hints I can start with it!
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Re: Receive Sensitivity of the V5 Board picking up broadcast interference
Awesome Jack Thanks so much will get the done. Ps. Just ordered all parts for Jack Al board.
Regards 73 KB1HKO
On Sat, Mar 9, 2019, 11:15 AM Jack Purdum via Groups.Io <jjpurdum= [email protected]> wrote:
We had that problem, too, and Al (AC8GY) just wrote an article for CQ (Nov., 2018??) on a BCI filter for it. The BCI filter I made also works well, but Al's is a stronger filter. This is mine:
I used the one above with the Forty-9er, too, and it has a very small insertion loss. I used axial inductors, while Al's will handle more power with toroids.
Jack, W8TEE
On Saturday, March 9, 2019, 11:03:29 AM EST, Laurence Oberman < oberman.l@...> wrote:
Hello
Testing the V5 board and had mentioned on another thread from a
harmonics FCC spec point of view its looking OK to me testing CW.
I am picking up significant broadcast interference after replacing the
board in the same chassis using the identical setup for my v4 board
same antenna. It almost overwhelms the receive.
I filtered some of it out using an external filter, but if I swap
boards its gone.
Very strange, has not been seen by me on 2 prior v4 boards or my
current v4 board.
Before I start chasing it has anybody experienced this on v5. This may
be a board issue only in my case.
Regards
Laurence
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N8DAH
Ion Petroianu, VA3NOI
Terry Morris
The HF SIGNALS MBITX would be V4. Please let us know if you have any other questions!