Date   

Re: Transverter for uBitx

Joe Puma
 

  Nice Scott,

I think you got 3-5 watts on the Input for the transverter and yeah if you back the radio all the way down you can use it without the attenuator, but then when you don’t want to use the transverter you have no output power lol. I guess we will have to leave that to the pros here to help us get the most out of the ubitx power on the higher bands. 

I love the idea of satellite use, I only listen to Sats with my SDR and I would like to go in that direction after trying it with some local hams on 2 meter SSB. And the fact that you can control the radio with CAT You can probably get SDR console satellite program To control at least one radio when the Satellites are passing over. Probably would be the transmit one since it can maintain Doppler change as well. Thanks for the cool idea :)

Joe
KD2NFC 


On Feb 24, 2018, at 6:57 AM, Scott McDonald via Groups.Io <ka9p@...> wrote:

They are Bug bang for the buck. And pretty much arrive as promised.

There is one decent YouTube video worth a look, which mentions distortion increasing over a few watts.

The other practical problem may be using their switching attenuator board with a uBITX, as that board wants to see 5 watts.  My uBITX is about half that on 10 but there is a pot on the board with some variability.  I haven’t dialed mine in on transmit yet with because I’ve been driving them with a KX2 hacked to go to 32 MHz and with low enough drive without using an attenuator - I’m using the uBITX as a satellite receiver for now -but I’m hoping to use two BITX with these transverters as a cheap lightweight backpack full duplex sat rig.

73 Scott

Make something good happen!

On Feb 24, 2018, at 1:37 AM, Joe Puma <kd2nfc@...> wrote:

I’m thinking about adding this to my build, has anyone attempted installing a transverter?

 

https://www.ebay.com/itm/144-to-28-MHz-TRANSVERTER-ATTENUATOR-BOARD-2m-144mhz-146mhz-VHF-UHF-Ham-Radio/221816251327?epid=842423775&hash=item33a54763bf:g:V4wAAOSwfglZwjN8

 

 

Sent from Mail for Windows 10

 


Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Michael Hagen
 

As Jerry says, a GOOD antenna is the problem for most.

I don't receive much where I am.    I had a 50' long wire, and then the property owner cut down the tree!

I built a 6' Loop, I get some reception when the band is open.  I would like to put it on the Stump of the beautiful tree he cut down!  But I keep it hidden in the car port.

It is hard to beat a dipole up as high as possible.   People that I have met lately don't know what ham radio is and think the antennas have to go!   They just don't get it.  A friend came from Las Vegas last week, I hooked bitX to the Loop ant. I found some guys rag chewing in the Arizona area, he thought it was stupid!  He has an I phone for that!

So, the radio is easy part in my opinion?  Us older guys can't climb towers or trees anymore either. 

73's

Mike, WA6ISP


On 2/24/2018 10:15 AM, Jerry Gaffke via Groups.Io wrote:
If you get a uBitx, you will have to do some soldering, also some mechanical work.
Will at least want to mount the controls and connectors to a panel,
then nail that and the main PCB to a sheet of plywood. 
Will need an adequate power supply.
Once having put it together, it may not be obvious if it's working
Possibly some time spent on debug, especially if you are just now learning to solder.
Will need a decent outdoor antenna to hear any signals.
And will need a dummy load and some way to measure power to see if the transmitter is working.

If you haven't done any of this before, figure on weeks of weekends to get it going,
plus an investment in soldering iron, multimeter, and hand tools.
You would learn a lot if you bought a uBitx, it's time well spent.
You may need assistance from a local ham to get going.

Hard to get around it, you will either need money or time to get on HF.
Or possibly a good lead on some cheap used gear, perhaps ask at the local ham club.

The $100 VHF FM handheld, on the other hand, you can pull out of the box and operate.
About as challenging as using a cell phone.

Jerry

On Sat, Feb 24, 2018 at 09:52 am, Mark wrote:
Yes, that is my "someday" QRP unit. Right now its out of my price range. Because I'm also looking for a decent HT for about $100, I'd like to keep the cost of my HF QRP rig under $300. They were selling on eBay for about $500. So, perhaps my expectations are inconsistent with this price range?


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Re: uBitx Shipping question

Dennis Voorhees
 

Shipped Monday Feb 19 1645 local India time. At my door 12:04 local time Feb 21 Wednesday. a bit over 48 hours including the time differential. 

On Sat, Feb 24, 2018 at 12:05 PM, Jason Schlager <jmschlager@...> wrote:
Ordered mBITX Dec 23 shipped DHL on Feb 19 delivered Feb 22.

73
KM6AUS



Re: cases

Vince Vielhaber
 

He also has gray ones. Some may recognize the call of the person selling them: VU3SUA

Vince.

On 02/24/2018 02:05 PM, Vince Vielhaber wrote:

Anyone interested, there's a case on ebay (there's actually 2 available)
for the bitx. Already punched and panel lettering in place. No
relation to the seller, just came across it 'cuze it's listed in the
wrong category.

https://www.ebay.com/itm/Bitx-3B-Black-Case-With-Accessories/142699589892?hash=item21398ef104:g:0sAAAOSw3WxaQLAG


Vince.


cases

Vince Vielhaber
 

Anyone interested, there's a case on ebay (there's actually 2 available) for the bitx. Already punched and panel lettering in place. No relation to the seller, just came across it 'cuze it's listed in the wrong category.

https://www.ebay.com/itm/Bitx-3B-Black-Case-With-Accessories/142699589892?hash=item21398ef104:g:0sAAAOSw3WxaQLAG

Vince.
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com


Re: No Power Out on UBITX

Walter
 

I am building one of these.

https://groups.io/g/BITX20/message/42481


--
73, W9KJO
Walter


Re: No Power Out on UBITX

Walter
 

I installed a boost regulator.  I will set it to around 24 volts, it will stay at a solid 24 volts regardless of the variation in my solar panel battery system that varies from 12.6 to 14.5 depending on the sun and the status of the MPPT controller, it bumps up 14.6 to condition the batteries once a day.  I will use this 24 volts and a zener regulator to vary the voltage on the PA supply to control my Power Out.  So I can turn the power to various levels depending on the voltage supplied to the PA supply.

The 5 Amp boost regulator cost be about $6.00 on amazon.  They maybe cheeper else where.  I had a spare from when I built a supply for my laptop to charge off my solar system.  the car charger for laptops caused all kinds of noise on 20m this boost regulator causes zero noise on the Ham bands as far as I can tell.

I don't currently have a working mic.  its on order.  But with the keyer I have seen 7 Watts out at 13.8 vdc and it will go up to about 15 watts at 24 volts.  I dont know what SSB will do yet and I still have to build my zener circuit.  I tested this by just adjusting the boost regulator up and down.  I think it will work nicely, and give me more control over my power out.

Wish I had a working mic I would love to hook it up and talk to the world out there.  LOL
--
73, W9KJO
Walter


Re: I got my uBITX ... adventurous shipment !

Giancarlo
 

Hi Josia,

I hope you will receive it before the 90 days. My BITX40 was faster, just over a month.

73

Gian
I7SWX

Mail priva di virus. www.avast.com


Re: No Power Out on UBITX

Michael Shreeve
 

I'm going to put a jumper in for finals supply if possible, so I can regulate the voltage to the finals.

On Sat, Feb 24, 2018 at 10:12 AM, Michael Shreeve <shreevester@...> wrote:
Oh, ok, makes sense, low voltage because of current limit, plus, probably acted very strange. display brightness changed seriously dim on transmit. Lowering voltage is good for the finals though if your doing WSPR or PSK ect. Good to remember for the future.

On Sat, Feb 24, 2018 at 10:08 AM, Walter <W9KJO@...> wrote:
LOL Figured it out.  The Lab Power Supply has a current limiter, it was turned up a bit.  now I have 7 watts on the Keyer (CW).   I just need a microphone that I can put in the mic that came with the kit.  This is some elses mic I can not modify it.

73 Thanks all.
--
73, W9KJO
Walter




--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley






--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley




Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Jerry Gaffke
 

If you get a uBitx, you will have to do some soldering, also some mechanical work.
Will at least want to mount the controls and connectors to a panel,
then nail that and the main PCB to a sheet of plywood. 
Will need an adequate power supply.
Once having put it together, it may not be obvious if it's working
Possibly some time spent on debug, especially if you are just now learning to solder.
Will need a decent outdoor antenna to hear any signals.
And will need a dummy load and some way to measure power to see if the transmitter is working.

If you haven't done any of this before, figure on weeks of weekends to get it going,
plus an investment in soldering iron, multimeter, and hand tools.
You would learn a lot if you bought a uBitx, it's time well spent.
You may need assistance from a local ham to get going.

Hard to get around it, you will either need money or time to get on HF.
Or possibly a good lead on some cheap used gear, perhaps ask at the local ham club.

The $100 VHF FM handheld, on the other hand, you can pull out of the box and operate.
About as challenging as using a cell phone.

Jerry


On Sat, Feb 24, 2018 at 09:52 am, Mark wrote:
Yes, that is my "someday" QRP unit. Right now its out of my price range. Because I'm also looking for a decent HT for about $100, I'd like to keep the cost of my HF QRP rig under $300. They were selling on eBay for about $500. So, perhaps my expectations are inconsistent with this price range?


Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Jack, W8TEE
 

Mark:

Welcome to the group! First, the µBITX is what I call a "semi-kit" and not offered assembled. Go to HF Signals web site (hfsignals.com) and look at the "Wiring" instructions (µBITX-->Wireup). I think you will find that it's really very simple to do because all of the on-board components are already in place. Second, after reading those instructions, if you're still uncomfortable, go to a local ham club meeting about 45 minutes before the meeting starts and introduce yourself and explain what you're goals are. I would be surprised if someone didn't offer to help you build the µBITX.

Still, I think your best approach is to order the rig now, study the wiring diagrams while you wait for it to arrive, and then put it together yourself (or with a mentor watching you). That way, you'll know something about your radio and that's always a good thing. There's also plenty of hand-holding available on this site from some very bright and helpful people. Dollar-for-dollar, I think you'll find this is your best option.

Jack, W8TEE



From: Mark via Groups.Io <mboston72@...>
To: BITX20@groups.io
Sent: Saturday, February 24, 2018 12:13 PM
Subject: [BITX20] Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Hello Folks,

I'm a newbie. I just got my HAM license.

For the last two weeks I've been looking around for a small, portable QRP rig, that has SSB phone & PSK31. An ideal rig would be a dual-band with 20 & 17/15/10/6 meters.

I haven't been able to find one, other than a rig from Russia that doesn't have much support, as far as documentation.

I notice there is plenty of documentation on the BITX. However, I'm not so technically inclined. I could study before I put one of these together. Yet, I have lots of things going on right now, & would rather not have to put a kit together for my first radio. At this point I'd just like to get on the air & start practicing.

What I'd like to do is just purchase a kit that has bee completely assembled. However, there are no assembled BITXs with these specs that I could find.

Does anyone know if these are available fully assembled?

I realize this is an email list for people who construct their own BITX kits. Yet, I thought it would be a good start to find out if this is possible.

If not, are there HAMs who would put one together for me if I paid them?

I was thinking about placing an AD on craigslist, or in one of the classified sub-forums on a ham website.

Your suggestions are much appreciated.

Thanks,

Mark



Virus-free. www.avast.com


Re: No Power Out on UBITX

Michael Shreeve
 

Oh, ok, makes sense, low voltage because of current limit, plus, probably acted very strange. display brightness changed seriously dim on transmit. Lowering voltage is good for the finals though if your doing WSPR or PSK ect. Good to remember for the future.

On Sat, Feb 24, 2018 at 10:08 AM, Walter <W9KJO@...> wrote:
LOL Figured it out.  The Lab Power Supply has a current limiter, it was turned up a bit.  now I have 7 watts on the Keyer (CW).   I just need a microphone that I can put in the mic that came with the kit.  This is some elses mic I can not modify it.

73 Thanks all.
--
73, W9KJO
Walter




--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley




Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

 

Mark,

 If you would be interested in a Bitx40 CW/USB/LSB with AGC CW filter and built in keyer with case get back to me. I have just finished my Ubitx and the bitx40 is just going to sit looking for a good home.

 E-mail or call

dherron at live dot com seven three four- seven one six- six nine one seven
--
David

 N8DAH
Kit-Projects.com


Re: Dynamic mic on ubitx

Walter
 

Dave wrote,

"Modifications to use a Dynamic Mic.
Referring to the uBITX Schematic.  The Gain of the Mic PreAmp is controlled by R63 in the Emitter of Q6 to C62/R64.  It basically decouples the audio bypass of R64 by C62 to limit gain for the high output Electret Mics.  Replacing R63 with a Zero Ohm resistor and putting a 10K at the Mic input should allow a Dynamic Mic to work now with a Mic Gain Control.  Also R60 that supplies Mic BIAS to the Electret-Condenser Mic needs to be removed.  If there is not enough Gain still, you might have to reduce the value of R64 to maybe 470 Ohms or so.  If you cannot look at your transmitted signal on a scope at least listen to your audio on another receiver to verify you are not causing distortion.
 
More Gain for the Electret Mic
To simply get more gain with an Electret Mic you might try dropping another 47 Ohm chip resistor on top of the existing R63 by soldering another chip resistor one end at a time.
 
Dave WI6R"

Has anyone actually performed this mod?  Does it work?

--
73, W9KJO
Walter


Re: No Power Out on UBITX

Walter
 

LOL Figured it out.  The Lab Power Supply has a current limiter, it was turned up a bit.  now I have 7 watts on the Keyer (CW).   I just need a microphone that I can put in the mic that came with the kit.  This is some elses mic I can not modify it.

73 Thanks all.
--
73, W9KJO
Walter


Re: #uBITX - I have CW but no SSB output. #ubitx

at91r40008
 

John,

there are two versions that work and you can find one of them in stock here. They 24 pieces in stock $0.19:

https://www.taydaelectronics.com/catalogsearch/result/?q=TDA2822M

I think I'll order a few just in case.

Good luck.
--
73, Yvon NU6I


Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Jack, W8TEE
 

They say the FT-818 will be coming out soon. I think Gigaparts is taking pre-orders. Still, that radio came out in 2001 and it hasn't changed much so the 818 didn't do much for me.

Jack, W8TEE



From: Patrick G <KC9RGE@...>
To: BITX20@groups.io
Sent: Saturday, February 24, 2018 12:44 PM
Subject: Re: [BITX20] Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Have you looked at the Yaesu FT-817? You didn't mention price range but it is a great little radio. There isn't much you can't do with it.

On Feb 24, 2018 12:13, "Mark via Groups.Io" <mboston72=yahoo.com@groups.io> wrote:
Hello Folks,

I'm a newbie. I just got my HAM license.

For the last two weeks I've been looking around for a small, portable QRP rig, that has SSB phone & PSK31. An ideal rig would be a dual-band with 20 & 17/15/10/6 meters.

I haven't been able to find one, other than a rig from Russia that doesn't have much support, as far as documentation.

I notice there is plenty of documentation on the BITX. However, I'm not so technically inclined. I could study before I put one of these together. Yet, I have lots of things going on right now, & would rather not have to put a kit together for my first radio. At this point I'd just like to get on the air & start practicing.

What I'd like to do is just purchase a kit that has bee completely assembled. However, there are no assembled BITXs with these specs that I could find.

Does anyone know if these are available fully assembled?

I realize this is an email list for people who construct their own BITX kits. Yet, I thought it would be a good start to find out if this is possible.

If not, are there HAMs who would put one together for me if I paid them?

I was thinking about placing an AD on craigslist, or in one of the classified sub-forums on a ham website.

Your suggestions are much appreciated.

Thanks,

Mark



Virus-free. www.avast.com


Re: Schematic Drawing Software

Mike Bryce <prosolar@...>
 

yes!

Diptrace is the one I use all the time now.

I tried most of them as well, found Eagle way to expensive, although it has a huge following.

Eagle is size restricted with no limit on pins
dip trace is pin limited (300) with its free version but any sized pcb.

Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/
J e e p
o|||||||

On Feb 23, 2018, at 7:26 PM, Larry Cicchinelli <k3pto@...> wrote:

Hi,
I 2nd the vote for DipTrace.  I have been using it for over 10 years.  I have used several different CAD software programs in the past, both professional and hobby.  DipTrace is by far the easiest to learn and use.


Re: Looking for Completely Functional Dual-Band 20/(17/15/10/6) Meter QRP Rig with SSB/PSK #bitx20help

Mark K0ABD
 

Hello Patrick,

Yes, that is my "someday" QRP unit. Right now its out of my price range. Because I'm also looking for a decent HT for about $100, I'd like to keep the cost of my HF QRP rig under $300. They were selling on eBay for about $500. So, perhaps my expectations are inconsistent with this price range?

Thanks,

Mark


Re: Distorted RX audio at higher volumes #ubitx-help

Praba Karan
 

I did the same and never had distorted audio.

On Feb 24, 2018 7:04 AM, "Pez T" <vk3xpt@...> wrote:
On Fri, Feb 23, 2018 at 09:05 am, radiodoc43 wrote:
hort the audio output which will lead to the audio distortion at anything but lowest volume levels. It also explains the hot audio chip.
In order to remove this as a potential issue, I wired a speaker directly to the brown/black wires (I am not using any plug/sockets for speaker audio). Unfortunately this is not my issue. :)

Pez