sBitx v3 - problem with nonstandard callsigns
I've been using my sBitx v3 for one and a half months and am pretty happy with it. However, I noticed strange behavior.
When I try to start QSO with a station that uses nonstandard callsign (e.g., longer than usual or prefixed or suffixed with something), its callsign is displayed as <...>. The same "<...>" is output to the log. This form seems to be used even in responses, so the recipient does not accept them, and the QSO gets broken.
Up to now, I'm simply limiting my QSOs to the stations with standard callsigns.?
However, spring and summer approach, and I hope to use my site v3 in SOTA and POTA activities or use it during my holidays abroad.
In those cases, my callsign will need to be suffixed (e.g., with "/P") or prefixed (e.g., with "OE/" when in ?sterreich).
Is my sBitx v3 going to handle that situation properly, or I won't be able to make any QSO?
How can I fix that issue?
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73,
Wojtek SP5DAA
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Re: zBITX: Is there a built-in charging circuit for the 18650 batteries?
Thanks David for the clarification.
73 Jon, VU2JO
On Thu, Mar 6, 2025 at 9:51?PM David T-- VE3TOS via <digiital= [email protected]> wrote: No there isn't.?
I bought this device in the hopes it works :)?
Is there a built-in charging circuit for the 18650 batteries in zBITX?
This question was asked by one of my ham friends. I told him that I will post on this group and get back to him if I get a response.
73 Jon, VU2JO
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Re: SBitx SDR v3 for sale
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HI Everybody I have a?sBitx v3 SDR For sale Price is 375.00 plus shipping It comes with 2 mics (was told the?original sounded off) and it has power poles on the DC leads A wireless?keyboard/mouse I printed manual My thought’s changed, It has NOT been on the air, just listen. The battery is not in the deal
Denton Larson
WB0ZUR
Delavan, MN
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HI Everybody I have a?sBitx v3 SDR For sale Price is 375.00 plus shipping It comes with 2 mics (was told the?original sounded off) and it has power poles on the DC leads A wireless?keyboard/mouse I printed manual My thought’s changed, It has NOT been on the air, just listen. The battery is not in the deal
Denton Larson
WB0ZUR
Delavan, MN
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Re: zBitx - Progress Update
When can we expect an updated accurate schematic?
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Joel
N6ALT
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I use same dipole that was in use before.. It is without balun but good trimmed and it works same for many years also on other devices, even on the very same uBITX and for same purpose, nothing has changed concerning the antenna... Just thinking, could it be that the relay has worned or weakened out in a year of doing RTTY and PSK contestings..?
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73
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Vule, E78CB
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Hi Vule,
1) Do You have original ubitx V6 display? If Yes, is "TX" sign disappearing from the screen after TX is switched OFF?
2) Is this happening when toggling PTT (also for longer period) with RF power (CW, SSB with modulation) and with microphone?
2) Is powering ubitx OFF and turning it back ON causing back to RX?
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If this is relay(s) issue - then relay replacement might be necessary. I believe better quality OMRON G5V-2 12 VDC might be considered.
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If this is Your PSK/RTTY device issue then will be difficult to help - more data needed - eg. monitoring of voltage on PTT line - as I remember PTT input is configured as pull-up input in Arduino.
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Might be also socket issue.
Might be a problem even with Arduino nano... which of course can be bought without gold-pins soldered, then pins needs to be soldered on the other side than market versions, flashed and installed into raduino board.
Something else...
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Regards
Tomasz
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I have to believe that those who were able to order the first 250 radios will be advised when their radios shipped - HF Signals has indicated they would be sending out tracking numbers as they ship product, as I recall.
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I fully expect we will hear from list members as they receive their tracking numbers and/or their radios.
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If you are among the first 250, I think patience is called for (watched pot never boils, etc), and if you are waiting to place an order once orders open back up, the very best thing you can do is send a note to sales@... and ask them to alert you when the zBitx can be ordered. They have indicated that they can not promise to track every alert request sent to this email reflector, so best to contact them direct is the best option. ?
Posting your interest in ordering a zBitx on this email reflector causes over seven thousand list members to get emails they have no use of or interest in getting.
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Ken, N2VIP
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I understand the zBit shipments were supposed to start at the beginning
of this week.? Has anybody actually received their zBit, or at least a
tracking number showing it has been shipped?
Gerry Sherman
Sent by the Windows 11 Thunderbird
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I understand the zBit shipments were supposed to start at the beginning of this week.? Has anybody actually received their zBit, or at least a tracking number showing it has been shipped?
Gerry Sherman
Sent by the Windows 11 Thunderbird
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Re: zBITX: Is there a built-in charging circuit for the 18650 batteries?
No there isn't.?
I bought this device in the hopes it works :)?
Is there a built-in charging circuit for the 18650 batteries in zBITX?
This question was asked by one of my ham friends. I told him that I will post on this group and get back to him if I get a response.
73 Jon, VU2JO
|
zBITX: Is there a built-in charging circuit for the 18650 batteries?
Is there a built-in charging circuit for the 18650 batteries in zBITX?
This question was asked by one of my ham friends. I told him that I will post on this group and get back to him if I get a response.
73 Jon, VU2JO
|
It's kind of odd, but not really, if I were trying to diagnose something that I built myself, I would have no problem. I have no problem doing mods to commercial built equipment. But, yes, I would be lost if something on a commercial transceiver
went poof. It is a great learning experience though! I also tend to have multiple projects going on as well, I am concurrently trying to figure out a new Radioberry v2 as well. I finally got it going, even got the preamp board working, but I have to verify
output yet. That whole project could use a well organized wiki and repository too. Thanks Gordon!
Mike - K8MCB?
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-------- Original message --------
From: "Gordon Gibby KX4Z via groups.io" <docvacuumtubes@...>
Date: 3/6/25 8:53 AM (GMT-05:00)
Subject: Re: [BITX20] reviving my sbitx v3
You're going to learn a lot in the process of this repair.? ?Be certain to protect Q101 with a small resistor in its drain lead or you are likely?to just repeat the whole performance all over
again.
Q101's purpose is just to drain power from the transmitter side quickly, so the transmitter doesn't STAY ON when the receiver startups up-- this could lead to an RF loop.? ?At least I think
that is what it is for!!
My V2 #1 has all these fixes in it (because it got damaged, and some of it may have been ME rather than IT)
My V2 #2 has none of this YET -- hurt my knee and just barely now able to walk and climb stairs.? ?A zillion projects going on.? ?And teaching two AP classes.? ?And a ham radio group.... so
it may be a while yet before I get that done.? ? It will take half a day to do everything I need to do on that radio, even if I manage to put all the parts together in one place!!
I looked inside my Icom 7300 once....(I've unsoldered diodes in there before on 2 or 3 units) and there is almost NOTHING I would be able to repair in there.? ? If it breaks, I'm toast.? Meanwhile,
I have 50+ year old Heathkits that I'm able not only to repair but to upgrade!? ?We will move to jusst?dealing with "modules" at some point.
73
Gordon KX4Z
Old 2n7000 datasheet
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73
Evan
AC9TU
-- Mike - K8MCB?
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This is often due to rf getting into the control circuits. Are you using an unbalanced antenna? EFHW perhaps?
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I agree about Heathkit. I miss the HW101 I had in the late '70s. I could almost draw parts of? the schematic by memory. (Yes, I played/worked on it that often!) I stayed active in cw, ssb, rtty and even Air Force MARS back then.
Scotty
On Thu, Mar 6, 2025, 8:53 AM Gordon Gibby KX4Z via <docvacuumtubes= [email protected]> wrote: You're going to learn a lot in the process of this repair.? ?Be certain to protect Q101 with a small resistor in its drain lead or you are likely?to just repeat the whole performance all over again.
Q101's purpose is just to drain power from the transmitter side quickly, so the transmitter doesn't STAY ON when the receiver startups up-- this could lead to an RF loop.? ?At least I think that is what it is for!!
My V2 #1 has all these fixes in it (because it got damaged, and some of it may have been ME rather than IT)
My V2 #2 has none of this YET -- hurt my knee and just barely now able to walk and climb stairs.? ?A zillion projects going on.? ?And teaching two AP classes.? ?And a ham radio group.... so it may be a while yet before I get that done.? ? It will take half a day to do everything I need to do on that radio, even if I manage to put all the parts together in one place!! I looked inside my Icom 7300 once....(I've unsoldered diodes in there before on 2 or 3 units) and there is almost NOTHING I would be able to repair in there.? ? If it breaks, I'm toast.? Meanwhile, I have 50+ year old Heathkits that I'm able not only to repair but to upgrade!? ?We will move to jusst?dealing with "modules" at some point.
73 Gordon KX4Z
Old 2n7000 datasheet
?
73
Evan
AC9TU
|
You're going to learn a lot in the process of this repair.? ?Be certain to protect Q101 with a small resistor in its drain lead or you are likely?to just repeat the whole performance all over again.
Q101's purpose is just to drain power from the transmitter side quickly, so the transmitter doesn't STAY ON when the receiver startups up-- this could lead to an RF loop.? ?At least I think that is what it is for!!
My V2 #1 has all these fixes in it (because it got damaged, and some of it may have been ME rather than IT)
My V2 #2 has none of this YET -- hurt my knee and just barely now able to walk and climb stairs.? ?A zillion projects going on.? ?And teaching two AP classes.? ?And a ham radio group.... so it may be a while yet before I get that done.? ? It will take half a day to do everything I need to do on that radio, even if I manage to put all the parts together in one place!! I looked inside my Icom 7300 once....(I've unsoldered diodes in there before on 2 or 3 units) and there is almost NOTHING I would be able to repair in there.? ? If it breaks, I'm toast.? Meanwhile, I have 50+ year old Heathkits that I'm able not only to repair but to upgrade!? ?We will move to jusst?dealing with "modules" at some point.
73 Gordon KX4Z
Old 2n7000 datasheet
?
73
Evan
AC9TU
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Old 2n7000 datasheet
?
73
Evan
AC9TU
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Yes, 2n7000 and 2n7002 are the same devices in different packages.
?
73
Evan
AC9Tu
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Yes, I was somewhat relieved that I am getting the proper Tx signal. I feel that I may need to remove Q9, Q10, Q101 and check the continuity, rule out damaged pads/traces, and swap in new components. Also when I mentioned using through hole
for Q10,Q101, I was thinking about using regular 2n7000 in place of the sot23 2n7002. Would those work?
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-------- Original message --------
From: "Evan Hand via groups.io" <elhandjr@...>
Date: 3/6/25 2:07 AM (GMT-05:00)
Subject: Re: [BITX20] reviving my sbitx v3
Michael,
?
The TX signal works (recieve at 0.15 volts, transmit at 3 volts).
?
?
The pins on Q9 are marked in this photo:
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The gate (pin 1) of Q9 should be higher, and the tab (Pin 2 or drain) should be 0 volts when receiving and close to 12 volts on transmission.? It could be a failed Q9, Q10, Q101, or combination.? I would start with Q10, as it should pull down the gate
of Q9 to turn it on and supply the 12 volts to the driver stages.??
?
?
Q101 is a 2n7002 MOSFET.? This can not be replaced with a 2n2219.??
?
?
The above is based on not getting 12 volts on the tab of Q9.
?
73
Evan
AC9TU
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-- Mike - K8MCB?
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Hi, folks!
?
When I do a digital QSO with my uBITX v.6. it often stucks on TX and won't go back after PTT is released. To put it in Rx mode I have to unplug PTT/Data cable from MIC connector, put the original microphone in and press-release PTT switch on the mike. This started to happened after a year of doing PSK/RTTY with this nice rig without problems. It does'n happened in SSB or CW.
Is there a way to solve this? Is it that PTT relay is "softened" or something else..?
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Thanks for advice.
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Vule, E78CB?
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James Riley kb9tzq
Joel Caulkins/N6ALT
tomekdm sp7etd
Scotty R