BITX20@groups.io | Messages

Re: Cal Fire Moves to Dismantle Ham Radio System,EndangeringLives Amid Blackouts and Wildfires | Trending

Laurence Oberman

#72423

Jack you got my support fully
Your contributions are invaluable, and I read all of your posts.
You have so much knowledge you share with all of us.
I am fine with this having been brought up here so just wanted you to know.

Regards
Laurence
KB1HKO

Show quoted text

On Thu, Oct 17, 2019 at 9:27 AM Joe Puma <kd2nfc@...> wrote:

Hi Michael,

For the record we do talk a lot about antennas here, just do some searching. Not only that but other projects are discussed here like antenna analyzers and amplifiers. Yes all to support the various bitx’s out but definitely not just about a bitx radio.

This is day 2 or 3 attacking Jack for his post, sheesh. Some should take their own advice and just go somewhere else if you’re just going to complain.  His post was real easy to overlook and keep it moving, no reason to gang up on the guy.

Have a nice day everyone and enjoy your projects.

Joe
Kd2nfc

On Oct 16, 2019, at 7:55 PM, Michael Walker <va3mw@...> wrote:

﻿
This has nothing to do with Bitx... sorry

And, if you think it is, then I want to talk about my HF antenna that hooks up to my BITX.

Can we kill this and take it elsewhere as this is a world wide group and not all of us live in California or even the US.

Mike va3mw

On Wed, Oct 16, 2019 at 7:15 PM Ken Hansen <ken@...> wrote:

Jack,

When this topic came up here in Texas on the local ARRL section mail list/reflector, I encouraged everyone that is engaged in EmComm to take this opportunity to reach out to their serviced agencies and organizations and ensure everyone understand the needs and offerings of each, and that the current relationships are mutually beneficial. To me, that is the take-away from this story.

As a reminder, groups.io has a facility for 'muting' threads you are not interested in, for anyone not interested in following this, or any similar conversation. The way it works is you click on the mute link at the bottom of the message, and any subsequent replies to that email thread will not be sent to you. If someone decides to start a new thread on the same topic, you'll have to mute that thread as well to stop any responses to the new thread.

Ken, N2VIP

On Oct 16, 2019, at 15:01, Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:

If I were living in CA, I'd think this is a very BIG teapot. If I lived in OR or ID, I'd still see it as a huge teapot. From a legal precedent standpoint, I think all hams in any state who face similar leasing controls should be concerned, especially since the general public probably doesn't see or understand what's going on.

Jack, W8TEE

Re: Cal Fire Moves to Dismantle Ham Radio System,EndangeringLives Amid Blackouts and Wildfires | Trending

Ian Reeve

#72424

As a English full licence holder, I am not only a owner and operator of two uBITX but also a K3, I find all aspects of amateur Radio fascinating.Without these user groups my knowledge base would be much the poorer and I for one am interested in the American and other countries amateur Radio support.I have no problem with the California issue being aired and if folk are not interested,pass the posts by.If sufficient interest move it to a new group but it's like the TV,if you are not interested turn it off. Just my thoughts,mileage will vary. M0IDR

Get Outlook for Android

Show quoted text

From: BITX20@groups.io <BITX20@groups.io> on behalf of Laurence Oberman <oberman.l@...>
Sent: Thursday, October 17, 2019 4:16:19 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] Cal Fire Moves to Dismantle Ham Radio System,EndangeringLives Amid Blackouts and Wildfires | Trending

Jack you got my support fully
Your contributions are invaluable, and I read all of your posts.
You have so much knowledge you share with all of us.
I am fine with this having been brought up here so just wanted you to know.

Regards
Laurence
KB1HKO

On Thu, Oct 17, 2019 at 9:27 AM Joe Puma <kd2nfc@...> wrote:
>
> Hi Michael,
>
> For the record we do talk a lot about antennas here, just do some searching. Not only that but other projects are discussed here like antenna analyzers and amplifiers. Yes all to support the various bitx’s out but definitely not just about a bitx radio.
>
> This is day 2 or 3 attacking Jack for his post, sheesh. Some should take their own advice and just go somewhere else if you’re just going to complain. His post was real easy to overlook and keep it moving, no reason to gang up on the guy.
>
> Have a nice day everyone and enjoy your projects.
>
>
> Joe
> Kd2nfc
>
>
> On Oct 16, 2019, at 7:55 PM, Michael Walker <va3mw@...> wrote:
>
>
> This has nothing to do with Bitx... sorry
>
> And, if you think it is, then I want to talk about my HF antenna that hooks up to my BITX.
>
> Can we kill this and take it elsewhere as this is a world wide group and not all of us live in California or even the US.
>
> Mike va3mw
>
>
> On Wed, Oct 16, 2019 at 7:15 PM Ken Hansen <ken@...> wrote:
>>
>> Jack,
>>
>> When this topic came up here in Texas on the local ARRL section mail list/reflector, I encouraged everyone that is engaged in EmComm to take this opportunity to reach out to their serviced agencies and organizations and ensure everyone understand the needs and offerings of each, and that the current relationships are mutually beneficial. To me, that is the take-away from this story.
>>
>> As a reminder, groups.io has a facility for 'muting' threads you are not interested in, for anyone not interested in following this, or any similar conversation. The way it works is you click on the mute link at the bottom of the message, and any subsequent replies to that email thread will not be sent to you. If someone decides to start a new thread on the same topic, you'll have to mute that thread as well to stop any responses to the new thread.
>>
>> Ken, N2VIP
>>
>> > On Oct 16, 2019, at 15:01, Jack, W8TEE via Groups.Io <jjpurdum@...> wrote:
>> >
>> > If I were living in CA, I'd think this is a very BIG teapot. If I lived in OR or ID, I'd still see it as a huge teapot. From a legal precedent standpoint, I think all hams in any state who face similar leasing controls should be concerned, especially since the general public probably doesn't see or understand what's going on.
>> >
>> > Jack, W8TEE
>>
>>
>>
>>
>

Re: 5w on 40 meters

Dave Dixon

#72425

Hello John,

Thanks for your reply,i own a home made radio which has full qsk and a dream to use it was produced by 2 uk amatuers in 1983 and is called the OMEGA,theres a picture of it on my qrz page,it runs 10 watts and has awsome cw filters,it weighs in at 10 kilos,all the pcb boards are housed in diecast boxes interconnecting with each other via feed through capactors and rg 174 coax,the low pass filters are enclosed in a brass sheild box and the pa is also sheilded,the radio has a brilliant receiver and was my main station until the arrival of the bitx Version 3 and now my new one the Version 5 I dont own any beams and only use a off centre fed dipole as i live in an area of conservation,i dont run any other modes than cw and have been 100% cw since 1990,you can read all about my exploits on my qrz page,I dont hunt dx and take what comes out of the speaker,i read the mail on this site with interest but have no qualms to change anything at all on any of my radios.Im waiting to hear of any news when the QSX gets released on the for sale market. have a 40 mtr qcx im impressed with.Regards Dave G0AYD..

Show quoted text

On Thu, 17 Oct 2019 at 13:27, Curt via Groups.Io <wb8yyy=yahoo.com@groups.io> wrote:

Dave

all very cool! your ubitx pair seems have not gotten the 40m malady (its not that huge) that affects maybe just a small number of our rigs. has me wondering what the producibility difference might be. the only sources of stray part leakage that folk have cited are the 45 MHz inductors and the stock relays (either inside or outside the part as its mounted).

honestly this matter had no impact to me until I started mods to remedy v4 SSB spurs.

I have done a decent amount of CW on the ubitx - I was addicted to it for months. crazy when I have rigs with much better QSK but I got used to its behavior. I did work a little DX with it on 40m SSB using my vertical.

John

if you are interested, monitor your 40m CW power while you touch those 45 MHz inductors. I can tune mine up to around 10 watts based upon how I touch the inductor! all pointing to taking my v4 to the bench some day to try some shielded inductors. I will check signal strength in receiving a nearby 10m beacon before and after. don't know how soon I will get to this surgery.

Curt

Re: Cal Fire Moves to Dismantle Ham RadioSystem,EndangeringLives Amid Blackouts and Wildfires | Trending

masch57

#72426

I wish my life was so perfect that an off-topic thread would be enough to disturb me. Also, this thread probably would have only had about 3 posts if not for: https://en.wikipedia.org/wiki/Streisand_effect. Touchy people just don’t seem to realize how much of their pain is self-inflicted.

Show quoted text

From: Ian Reeve
Sent: Thursday, October 17, 2019 7:33 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Cal Fire Moves to Dismantle Ham RadioSystem,EndangeringLives Amid Blackouts and Wildfires | Trending

As a English full licence holder, I am not only a owner and operator of two uBITX but also a K3, I find all aspects of amateur Radio fascinating.Without these user groups my knowledge base would be much the poorer and I for one am interested in the American and other countries amateur Radio support.I have no problem with the California issue being aired and if folk are not interested,pass the posts by.If sufficient interest move it to a new group but it's like the TV,if you are not interested turn it off. Just my thoughts,mileage will vary. M0IDR

Get Outlook for Android

From: BITX20@groups.io <BITX20@groups.io> on behalf of Laurence Oberman <oberman.l@...>
Sent: Thursday, October 17, 2019 4:16:19 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] Cal Fire Moves to Dismantle Ham Radio System,EndangeringLives Amid Blackouts and Wildfires | Trending

Jack you got my support fully
Your contributions are invaluable, and I read all of your posts.
You have so much knowledge you share with all of us.
I am fine with this having been brought up here so just wanted you to know.

Regards
Laurence
KB1HKO

On Thu, Oct 17, 2019 at 9:27 AM Joe Puma <kd2nfc@...> wrote:
>
> Hi Michael,
>
> For the record we do talk a lot about antennas here, just do some searching. Not only that but other projects are discussed here like antenna analyzers and amplifiers. Yes all to support the various bitx’s out but definitely not just about a bitx radio.
>
> This is day 2 or 3 attacking Jack for his post, sheesh. Some should take their own advice and just go somewhere else if you’re just going to complain. His post was real easy to overlook and keep it moving, no reason to gang up on the guy.
>
> Have a nice day everyone and enjoy your projects.
>
>
> Joe
> Kd2nfc
>
>
> On Oct 16, 2019, at 7:55 PM, Michael Walker <va3mw@...> wrote:
>
>
> This has nothing to do with Bitx... sorry
>
> And, if you think it is, then I want to talk about my HF antenna that hooks up to my BITX.
>
> Can we kill this and take it elsewhere as this is a world wide group and not all of us live in California or even the US.
>
> Mike va3mw
>
>
> On Wed, Oct 16, 2019 at 7:15 PM Ken Hansen <ken@...> wrote:
>>
>> Jack,
>>
>> When this topic came up here in Texas on the local ARRL section mail list/reflector, I encouraged everyone that is engaged in EmComm to take this opportunity to reach out to their serviced agencies and organizations and ensure everyone understand the needs and offerings of each, and that the current relationships are mutually beneficial. To me, that is the take-away from this story.
>>
>> As a reminder, groups.io has a facility for 'muting' threads you are not interested in, for anyone not interested in following this, or any similar conversation. The way it works is you click on the mute link at the bottom of the message, and any subsequent replies to that email thread will not be sent to you. If someone decides to start a new thread on the same topic, you'll have to mute that thread as well to stop any responses to the new thread.
>>
>> Ken, N2VIP
>>
>> > On Oct 16, 2019, at 15:01, Jack, W8TEE via Groups.Io <jjpurdum@...> wrote:
>> >
>> > If I were living in CA, I'd think this is a very BIG teapot. If I lived in OR or ID, I'd still see it as a huge teapot. From a legal precedent standpoint, I think all hams in any state who face similar leasing controls should be concerned, especially since the general public probably doesn't see or understand what's going on.
>> >
>> > Jack, W8TEE
>>
>>
>>
>>
>

Re: Using FT8 with Bitx40 (and microphonic problem). #bitx40 #ft8

Robert D. Bowers

#72427

It's in receive mode only, and somehow coming from the main board. It is also volume-dependent - the louder the volume, the louder the 'ringing' (actually sounding a bit like an echo chamber). Up to about 1/2 volume, it's not an issue or even noticeable. Tapping on components didn't narrow it down that much - somewhere in the middle of the board is about as close as I could get.

I DID pick up a single PSK31 transmission last night - too bad that mode seems to have largely faded away (at least on 40) - it's great for 'weak signal' work - especially if you want to ragchew. If I remember right, PSK31 isn't dependent on which sideband is being used. I'm using FLDigi for PSK (and may try other modes), which I think can be set to work with either sideband (worth asking).

I've heard people on the radio, but any attempts to be heard have mostly been futile (only a couple of partial contacts made). I do know I'm putting out signal - shows up on a meter. Antenna is a dipole at 50 ft... works fine with my main radio (an ancient TS-520). I don't know what the issue is - but only two partial contacts in hours of trying - that's not good.

The BitX40 is perfect for emergency communications - I've got it in an old movie film case (like tool box) with battery and external DSP noise filter (also provides 20db or more of AVC - still not always enough) and speaker. I think I have enough parts to cobble together a little antenna tuner and SWR meter to fit in the case as well. An easily transportable station in a small (only slightly heavy) box!

Show quoted text

On 10/17/19 6:16 AM, Vic WA4THR via Groups.Io wrote:

I have found the BitX40 to be a nice SSB rig and I am curious about your feedback problem. Are you hearing yourself through the speaker when transmitting? What microphone are you using?

=Vic=

Re: Cal Fire Moves to Dismantle Ham Radio System,EndangeringLives Amid Blackouts and Wildfires | Trending

Robert D. Bowers

#72428

I don't know if my previous post on this topic showed or not (I didn't see it being sent out from the server nor were there any replies)... but if I hadn't seen your original post, I would never have heard about this issue. I very much appreciate your posting it - and since it's radio related and could impact our ability to provide an extremely valuable service to local agencies clear up to federal level... IMO it SHOULD be brought up. It may not be directly related to BitX radios, but it is a peripheral issue to radios in general - and we all don't have access to decent sources of information.

(At least this hellhole, Florida, recognizes that we DO provide a necessary service - and others have expressed that as well.)

Show quoted text

On 10/16/19 11:21 PM, Jack, W8TEE via Groups.Io wrote:

I just saw it as a chance to reach several thousand hams on a subject that could impinge on most of us. I did not realize that the group's focus was that narrow.

So, I'm done.

Jack, W8TEE

On Wednesday, October 16, 2019, 10:56:53 PM EDT, Christopher Miller <djmalak2k6@...> wrote:

Why bother having a topic or moderators if its just going to be anything that has to do with amateur radio? It’s obvious that this is not related to the Bitx or uBitx. Jack, why not take it to a group where it is relevant? Sure, I can just mute this but why have rules to keep things on topic? Lets just post whatever we want and you can just deal with muting all the off topic stuff.

Chris

KF4FTR

On Wed, Oct 16, 2019 at 7:16 PM Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:

Well, Mike, you obviously missed the point, so there's no reason to continue.

Jack, W8TEE

On Wednesday, October 16, 2019, 7:55:45 PM EDT, Michael Walker <va3mw@...> wrote:

This has nothing to do with Bitx... sorry

And, if you think it is, then I want to talk about my HF antenna that hooks up to my BITX.

Can we kill this and take it elsewhere as this is a world wide group and not all of us live in California or even the US.

Mike va3mw

On Wed, Oct 16, 2019 at 7:15 PM Ken Hansen <ken@...> wrote:

Jack,

When this topic came up here in Texas on the local ARRL section mail list/reflector, I encouraged everyone that is engaged in EmComm to take this opportunity to reach out to their serviced agencies and organizations and ensure everyone understand the needs and offerings of each, and that the current relationships are mutually beneficial. To me, that is the take-away from this story.

As a reminder, groups.io has a facility for 'muting' threads you are not interested in, for anyone not interested in following this, or any similar conversation. The way it works is you click on the mute link at the bottom of the message, and any subsequent replies to that email thread will not be sent to you. If someone decides to start a new thread on the same topic, you'll have to mute that thread as well to stop any responses to the new thread.

Ken, N2VIP

> On Oct 16, 2019, at 15:01, Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:
>
> If I were living in CA, I'd think this is a very BIG teapot. If I lived in OR or ID, I'd still see it as a huge teapot. From a legal precedent standpoint, I think all hams in any state who face similar leasing controls should be concerned, especially since the general public probably doesn't see or understand what's going on.
>
> Jack, W8TEE

--
Jack, W8TEE

--
Jack, W8TEE

Fan Noise from amateurradiokits case kit #bitx20help

albert@...

#72429

I purchased a Nextion 3.5" cabinet kit from amateurradiokits DOT in.
The case came quite complete with all the cables/connectors, etc. but a little lacking in assembly instructions. (I am a kit builder and figured it out, well pretty much.)

I build the kit in sections,
1st Basic Radio Ver. 5 with 2-line LCD in the case. (worked well)
2nd Installed/Upgraded to the Nextion Display (Very nice addition)
3rd Audio amplifier board (Little problem here, the amplifier IC was bad. Corrected and audio quality is MUCH better than with the LM386.)
4th AGC board with VU meter (Had problems here with calibration. I found an alternate cal procedure buried (VERY Buried) in the documentation and all went well)
5th Fan and Heatsink kit (Still have problem here, see below...)

The Heatsinks were too tall and I was afraid they could touch the grounded top case.
They would clear the case top but, if any pressure was put on the top I felt it would possibly touch so I milled .125" off and all was good.
BTW, my IRC-510s are in sockets which raises them about .25".

The fan is another issue.
The instructions do not indicate how/where to connect it.
It is a 12 volt brushless type. I decided to connect it to the power switch, Unit On-Fan On.
I get terrible audio interference from the fan.
I was going to try moving the fan to the outside of the metal case or possibly connect it to the Transmit side of the TR relay, Transmit-Fan On, Receive-Fan Off
Possibly try another brushless fan, maybe the one I got has a problem.

Has anyone else built this kit and had a similar issue?
Albert
KE0PRX

Re: Cal Fire Moves to Dismantle Ham RadioSystem,EndangeringLives Amid Blackouts and Wildfires | Trending

Jerry Gaffke

#72430

I'm fine with letting conversations wander where they will, so long as folks remain civil.
A good way to learn more about other forum members.
Though admittedly, that EFHW thread did get kind of long ...........

This news about what's happening in California is arguably somewhat on topic.
Way more so than some of the enjoyable discussions we've had over the years.

Here in the far NE corner of Oregon there's spotty cell phone coverage,
we rely on a 2m repeater 40 air miles away for backup communications.
Probably on Forest Service land, I should to look into that.

If there's a consensus from the group that something is disruptive, then it's time to pull the plug.
But 2 or 3 strongly held opinions is not a group consensus.

Jerry, KE7ER Flora Oregon, USA
Well, within 5 miles of downtown Flora, pop 6. Groceries 1hr away in Enterprise, pop 2000.
From https://en.wikipedia.org/wiki/Flora,_Oregon: "the most substantial town to fail" in the Northeast Oregon region.

Show quoted text

On Thu, Oct 17, 2019 at 07:43 AM, masch57 wrote:

I wish my life was so perfect that an off-topic thread would be enough to disturb me. Also, this thread probably would have only had about 3 posts if not for: https://en.wikipedia.org/wiki/Streisand_effect. Touchy people just don’t seem to realize how much of their pain is self-inflicted.

Re: 5w on 40 meters

Dave Dixon

#72431

Hello Sama,

I have done only adding the resistors on the cw line no other mods have been done ON .Dave G0AYD.

Show quoted text

On Thu, 17 Oct 2019 at 13:27, MVS Sarma <mvssarma@...> wrote:

Dave,
Wherher any post power amp lpf mod was done? Results appear fine.

Rgards
Sarma vu3zmv

On Thu, 17 Oct 2019, 3:52 pm Dave Dixon, <wylyeguy2@...> wrote:
Here are my results on my V5.
80...14 watts.
40.. 10 watts.
30 9 watts.
20 10 watts.
17 to 10 mtrs 5 watts.
the only mod is fit the cw keying resistors and a 5 inch TFT screen.
worked indonisia on 9th october 2019 with 579 on 40 mtrs;
verified via eqsl.

I also have a V3 with 2 line blue lcd this delivers
17 watts on 80.
14 watts on 40
11 watts on 30.
12 watts on 20
9 watts on 17.
7 watts on 15.
5 watts on 10..
again no mods only the cw resistors.
Im very impressed with both radios.

all my radios are home made from kits..
i dont own any commercial radios at all save for a 2 mtr fm transceiver
thats the only microphone in the shack..
Aerial is an off centre fed dipole at 25 feet.

Dave G0AYD.QTHR QRZ.COM.

On Wed, 16 Oct 2019 at 23:46, Maurice Bersan via Groups.Io <Vk6hly=yahoo.com@groups.io> wrote:
So I decided to check the output of my stock v5. These are the results CW.
80m 18w
40m 5w
30m 14w
20m 10w
15m 7w
10m 4w
Used two different power meters and two different dipole antennas and two different tuners. I don't have a lot of test gear so any clues as to where I should start looking?
Thanks in advance

cw filters

dgclifford@...

#72432

I have my basic ubitx working nicely, i just wish the cw filtering was a bit (lot) better. What is the best way to improve the cw filtering and narrow it down. Dave c

Re: Fan Noise from amateurradiokits case kit #bitx20help

engineering@...

#72433

Hi Albert,

You are way ahead of me.

I too am trying to assemble the kit with the 3.5" Nextion display and the kit is full of mysteries.

I can't find the exact code for the 3.5" display. The published code doesn't fill the display.

Not sure yet about the right code for the Nano, still looking for the *.ino file for this.

Lots of different files, different generations, but the guide is fuzzy.

No clue how to install the audio amp or the AGC board.

I've got one uBitx working in the smaller case with a version 4 board. That was

a trial too, but not so bad.

Seems like clear instructions are promised in the future, but for now we are on our own.

Wayne O.

W9NZB

Re: cw filters

Jerry Gaffke

#72434

Easiest is to add an audio filter of some sort between the phone jack on your uBitx and your headphones.
For most of us, easiest means best.

Strong adjacent signals will cause audio distortion, for this reason somebody looking for the ultimate in performance
will want a separate crystal filter for the uBitx. This is moderately easy to do, but be prepared to learn about
building crystal filters and how to modify the firmware on your rig.

A discussion of CW filters can be found here: https://groups.io/g/BITX20/topic/32840565

Jerry, KE7ER

Show quoted text

On Thu, Oct 17, 2019 at 08:39 AM, <dgclifford@...> wrote:

I have my basic ubitx working nicely, i just wish the cw filtering was a bit (lot) better. What is the best way to improve the cw filtering and narrow it down. Dave c

Re: 5w on 40 meters

MVS Sarma

#72435

Thanjs Dave. I use v5 and Recollect some old comments about the 40m LPF inductor actial values vs sch indicated values.

Show quoted text

On Thu, 17 Oct 2019, 9:06 pm Dave Dixon, <wylyeguy2@...> wrote:

Hello Sama,
                   I have done only adding the resistors on the cw line no other mods have been done ON .Dave G0AYD.

On Thu, 17 Oct 2019 at 13:27, MVS Sarma <mvssarma@...> wrote:
Dave,
Wherher any post power amp lpf mod was done? Results appear fine.

Rgards
Sarma vu3zmv

On Thu, 17 Oct 2019, 3:52 pm Dave Dixon, <wylyeguy2@...> wrote:
Here are my results on my V5.
80...14 watts.
40.. 10 watts.
30    9 watts.
20    10 watts.
17 to 10 mtrs 5 watts.
the only mod is fit the cw keying resistors and a 5 inch TFT screen.
worked indonisia on 9th october 2019 with 579 on 40 mtrs;
verified via eqsl.

I also have a V3 with 2 line blue lcd this delivers
17 watts on 80.
14 watts on 40
11 watts on 30.
12 watts on 20
9 watts on 17.
7 watts on 15.
5 watts on 10..
again no mods only the cw resistors.
Im very impressed with both radios.

all my radios are home made from kits..
i dont own any commercial radios at all save for a 2 mtr fm transceiver
thats the only microphone in the shack..
Aerial is an off centre fed dipole at 25 feet.

Dave G0AYD.QTHR QRZ.COM.

On Wed, 16 Oct 2019 at 23:46, Maurice Bersan via Groups.Io <Vk6hly=yahoo.com@groups.io> wrote:
So I decided to check the output of my stock v5. These are the results CW.
80m 18w
40m 5w
30m 14w
20m 10w
15m 7w
10m 4w
Used two different power meters and two different dipole antennas and two different tuners. I don't have a lot of test gear so any clues as to where I should start looking?
Thanks in advance

Re: Fan Noise from amateurradiokits case kit #bitx20help

Ian Reeve

#72436

I too have the case assembly with fan,audio amp and agc boards for the Nextion 3.5" screen.The supplied fan is noisy mechanically and electrically inducing noise on receive audio.Fan ran too fast so running it at reduced voltage and bypassing the DC supply with a electrolytic and a polypropolend cap of 220uf and 0.01 uf respectively.Fan runs at reduced speed and is no longer intrusive. Ian M0IDR

Get Outlook for Android

Show quoted text

From: BITX20@groups.io <BITX20@groups.io> on behalf of engineering@... <engineering@...>
Sent: Thursday, October 17, 2019 5:46:55 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] Fan Noise from amateurradiokits case kit #bitx20help

Hi Albert,

You are way ahead of me.

I too am trying to assemble the kit with the 3.5" Nextion display and the kit is full of mysteries.

I can't find the exact code for the 3.5" display. The published code doesn't fill the display.

Not sure yet about the right code for the Nano, still looking for the *.ino file for this.

Lots of different files, different generations, but the guide is fuzzy.

No clue how to install the audio amp or the AGC board.

I've got one uBitx working in the smaller case with a version 4 board. That was

a trial too, but not so bad.

Seems like clear instructions are promised in the future, but for now we are on our own.

Wayne O.

W9NZB

Re: cw filters

Ashhar Farhan

#72437

Nothing beats the jackal board.

Show quoted text

On Thu 17 Oct, 2019, 4:50 PM Jerry Gaffke via Groups.Io, <jgaffke=yahoo.com@groups.io> wrote:

Easiest is to add an audio filter of some sort between the phone jack on your uBitx and your headphones.
For most of us, easiest means best.

Strong adjacent signals will cause audio distortion, for this reason somebody looking for the ultimate in performance
will want a separate crystal filter for the uBitx. This is moderately easy to do, but be prepared to learn about
building crystal filters and how to modify the firmware on your rig.

A discussion of CW filters can be found here: https://groups.io/g/BITX20/topic/32840565

Jerry, KE7ER

On Thu, Oct 17, 2019 at 08:39 AM, <dgclifford@...> wrote:

I have my basic ubitx working nicely, i just wish the cw filtering was a bit (lot) better. What is the best way to improve the cw filtering and narrow it down. Dave c

Re: Fan Noise from amateurradiokits case kit #bitx20help

albert@...

#72438

I will try that. Thanks!

Re: Fan Noise from amateurradiokits case kit #bitx20help

Mark Hatch

#72439

I replaced mine with a 10mm Noctua fan, but I have the taller case. I don't recall hearing any noise. I also put it on a switch. But if you look at ubitx.net and search for fan, you will see where someone used a $3 temp sensing relay to turn the fans on and off. He used heat transferred epoxy to attach the sensor to one of the heat sinks. Have the parts, but just have not taken that step yet. BTW: Since I was running KD8CEC with the extra nano, I already had a S meter. So I got a cheap digital readout and glued the sensor to the heat sink. That way, I could manually know when to turn on the fan.

73
Mark
AJ6CU

Re: Fan Noise from amateurradiokits case kit #bitx20help

Joel Caulkins/N6ALT

#72441

Hi Albert,

I put my fan in series with a 104 degree F thermal switch so it never comes on unless I talk for a real long time. There is no need to have it running all the time. BTW, I've only had the fan come on once.

Joel
N6ALT

Re: Fan Noise from amateurradiokits case kit #bitx20help

albert@...

#72442

I found the 3.5" TFT at the amateurradiokits website.
You have to go to "My Account" dropdown (Orange Button)
Depending on the login state you may have to login.
There you will find a "downloads" link. (7th down)
Download the "uBitx Nextion Case" (last one, takes a while)
Decompress is and look for a folder called "ubitx nexton case"
In that folder you will see a file "ubitx_35_basic.tft", That is what you want.
I am still waiting on my 3.5" display to be delivered. I am currently using 2.4" display I had for another project.

When you get to building and calibrating the AGC board use the "AGC Details.pdf" file found in the AGC folder!
DON'T download the second folder down (AGC) from the downloads amateurradiokits website. It will not give you ALL the information you need to know.
I used the AGC folder from the "ubitx nexton case" folder. (Spent a couple of days figuring that out.)

As for the uBitx software I used "http://www.hamskey.com/2019/04/release-cec-firmware-v1200-for-ubitx.html"
Scroll down to "2. Download the file"

Hope this helps!
Albert
KE0PRX

Re: 5w on 40 meters

ajparent1/KB1GMX <kb1gmx@...>

#72443

I've seen a few that had the wrong parts (inductors were obvious) installed for
the 40M filter.

Allison