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Re: Bit of a problem?

 

¿ªÔÆÌåÓý

You connected the leads for the powersupply of the amplifier stage. I made this mistake initially.

Ron - PA3FAT

Sent from my iPhone

On 28 May 2017, at 21:59, Joe Puma <kd2nfc@...> wrote:

Find a websdr openwebrx close to you to see if you're getting out.?


Sent from my iPhone

On May 26, 2017, at 8:56 PM, Brian D. K2BRZ <kd2iog@...> wrote:

Yup, fixed the continuity problem on the coax jumper and still no reading on the SWR Bridge. The only other thing I can think of is that the unit is bad. Should the meter itself light up, does anyone know? I don't see anything that it should. I have an HT I can use to check but that is VHF, not HF.

How else can I verify if the radio has been damaged? No smoke has been let out and only minimal fiddling inside while doing mods, which I was sure to be careful with. Being that there isn't a signal going into the bridge, I am surmising the antenna probably isn't a problem for now. I don't have a dummy load to bias the radio, so I'm not sure if the very small fiddling I did with that may have done something.

73,
Brian, K2BRZ

Re: arduino ide

mike
 

¿ªÔÆÌåÓý

got there before me. CH340 drivers may work. I have FT232 UARTs in my Nano's


On 28/05/17 20:49, OZ9AEW wrote:

I expect you are going to use Arduino Ide for a Raduino-board !
then you have to find and install a driver for Ch340 % CH341 chip used in many clear Arduino Nano from China

Re: Bit of a problem?

Joe Puma
 

¿ªÔÆÌåÓý

You can also do a crew test by testing the AC out on the coacts line. ?Set your multi meter to high-voltage key up the mic and talk.?


Sent from my iPhone

On May 26, 2017, at 9:21 PM, Brian D. K2BRZ <kd2iog@...> wrote:

Yes, which is why I'm thinking it's the radio because nothing happens on the SWR bridge when I key the mic. Either that or the unit is defective.

My question is: How do I verify it is the radio with the problem?

Re: Bit of a problem?

Joe Puma
 

¿ªÔÆÌåÓý

Find a websdr openwebrx close to you to see if you're getting out.?


Sent from my iPhone

On May 26, 2017, at 8:56 PM, Brian D. K2BRZ <kd2iog@...> wrote:

Yup, fixed the continuity problem on the coax jumper and still no reading on the SWR Bridge. The only other thing I can think of is that the unit is bad. Should the meter itself light up, does anyone know? I don't see anything that it should. I have an HT I can use to check but that is VHF, not HF.

How else can I verify if the radio has been damaged? No smoke has been let out and only minimal fiddling inside while doing mods, which I was sure to be careful with. Being that there isn't a signal going into the bridge, I am surmising the antenna probably isn't a problem for now. I don't have a dummy load to bias the radio, so I'm not sure if the very small fiddling I did with that may have done something.

73,
Brian, K2BRZ

Re: arduino ide

OZ9AEW
 

I expect you are going to use Arduino Ide for a Raduino-board !
then you have to find and install a driver for Ch340 % CH341 chip used in many clear Arduino Nano from China
arduino ide

 

hi if i follow the steps for compiling and uploading for windows 7 ide all goes ok until i try tools/ports.
it only offers me com1 and com2 NOT usb

the upload obviously fails

terry gm4dso
Re: I find the Transmit audio is a bit muffled has anyone else found this?

Petry, Kevin
 

Thanks to the group for this thread, I just installed a 15-60 pf trimmer at C103 and adjusted for crisp receive audio and the transmit audio sounds great now!
Hoping for some contacts tonight on the 9PM get together around 7.277!
Kevin N8DLP
This email is intended only for the use of the party to which it is addressed and may contain information that is privileged, confidential, or protected by law. If you are not the intended recipient you are hereby notified that any dissemination, copying or distribution of the email or its contents is strictly prohibited. If you have received this message in error, please notify us immediately, by replying to the message and deleting it from your computer. WARNING: Internet communications are not assured to be secure or clear of inaccuracies as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Therefore, we do not accept responsibility for any errors or omissions that are present in this email, or any attachment, that have arisen as a result of e-mail transmission.
Re: source for AD9850 DDS module for W8TEE TFT/VFO?

 

¿ªÔÆÌåÓý

Doug,

I actually received the "Right" AD98590 module pictured in the listing from these two Ebay sellers:

?

http://www.ebay.com/itm/172381520736

?

http://www.ebay.com/itm/180956144662

?

On the other hand, based on my? experience I? would not make a purchase from this seller:

suntekstore

?

73 & Happy BITXing

Bob? N0BHC
Re: BITX QSO Night, Sunday, May 28, 9pm Local Time, 7.277 MHz

 

My observation might be a confounding two cents, but here it goes. I don't hear the kilowatters other nights. We might be the QRMers stepping on their established nets or whatever. I think another night as well as other frequencies should be considered.

I plan to participate again tonight. de KG5KYJ, John, Oklahoma City.
I'll be working 7.178, 7.277, 7.285, as needed.?
Re: BITX QSO Night, Sunday, May 28, 9pm Local Time, 7.277 MHz

 

Just a reminder that the QSO night will happen this evening on 7277 in North America and 7177 elsewhere.? 9 pm local time.
Re: Jitter

 

here is a simpler way,?

1. change the band pass filter to 28 mhz. take the tap off the antenna end of band pass filter, modify the sktech to work on 28 mhz and you have the base of your transverter ready.

2. look around the vhf/uhf books and find stripline filter that makes a bandpass filter with just an etched FR4 board. no tuning really needed. now, add two 1N4148 as anti-parallel diodes, take an additional clock output of the raduino running at 202 MHz and use it as the LO (the anti-parallel mixer needs the vfo to be at half the LO frequency). you are on 70 cm!

3. to improve noise figure add a one dollar MAV-11 or MAR6, between the mixer and the band pass filter. Wow, now you are transmitting a full milliwatt

if this is all too cumbersome, just go and buy an RFM22B for three dollars. you don't know what that is? have you been living under a stone?

- f


On Sun, May 28, 2017 at 11:23 PM, David Woodward <kf4wbj2@...> wrote:

Yes I have one also...I made a moxon out of coat hangers and regularly work the fm sats...what I want is to work some ssb says like ao-7....
I have an rtl- sdr for receiving via sdr console v2.
I'm thinking of converting the BITX40 to 10 meters and using one of those Russian transverters for xmit...

On May 28, 2017 10:20 AM, "Jamie Rolfe" <j.rolfe8@...> wrote:
Hi David,?

I know.? These Bitx40 kits are excellent.? Glad you're having fun. It took me more time to make a box than to get on the air.?

If you want to get on 70cm cheaply I suggest the Baofeng uv-5r. They are an HT that run about $39. I've had mine for about 4 months and I've only had to charge it twice with stock battery. Accessories are super cheap online as well.?

I think I got mine from if I remember correctly.?

Cheers

Jamie VA3RLF?


topic search #w8tee

Jack Purdum
 

Good Idea...if I can remember it! I'm trying to limit the emails sent to the group. It should become less and less.

Jack, W8TEE


From: Ashhar Farhan <farhanbox@...>
To: [email protected]
Sent: Sunday, May 28, 2017 1:55 PM
Subject: Re: [BITX20] SMD orientation

Jack,

It might be easier for us to search for all the posts related to your board if we agree to suffix them the subject like with "w8tee vfo" or something. that way, the those how come in later will be able to search and read these posts sequentially.

just a suggestion, it will involve reposting the questions under a new subject line, but the categorization will be worth it.?

the other way is to add an easter egg '#w8tte-vfo' in the reply itself. those who search for this term will find these posts. it is a way to hashtag within the posts of this group.

- f

On Sun, May 28, 2017 at 11:13 PM, Jack Purdum via Groups.Io <econjack@...> wrote:
You should be ok with either, but the MAR-3SM is considered obsolete now.

Jack, W8TEE


From: Doug W <dougwilner@...>
To: [email protected]
Sent: Sunday, May 28, 2017 1:35 PM
Subject: Re: [BITX20] SMD orientation

Your BOM calls out a MAR-3SM+.? Most of what I am finding online is a MAR-3SM.? Do you know if the + designates anything important?? I didn't see anything that looked meaningful in the data sheets I could find.
thanks





Re: SMD orientation

 

¿ªÔÆÌåÓý

Doug,

?

The ¡°+¡± sign designates a part that is ¡°RoHS¡± (lead free) compliant.? Parts without the ¡°+¡± sign have the same functionality.

73,

Dale? K9NN

?

From: [email protected] [mailto:[email protected]] On Behalf Of Doug W
Sent: Sunday, May 28, 2017 1:35 PM
To: [email protected]
Subject: Re: [BITX20] SMD orientation

?

Your BOM calls out a MAR-3SM+.? Most of what I am finding online is a MAR-3SM.? Do you know if the + designates anything important?? I didn't see anything that looked meaningful in the data sheets I could find.
thanks



Re: SMD orientation

 

Jack,

It might be easier for us to search for all the posts related to your board if we agree to suffix them the subject like with "w8tee vfo" or something. that way, the those how come in later will be able to search and read these posts sequentially.

just a suggestion, it will involve reposting the questions under a new subject line, but the categorization will be worth it.?

the other way is to add an easter egg '#w8tte-vfo' in the reply itself. those who search for this term will find these posts. it is a way to hashtag within the posts of this group.

- f

On Sun, May 28, 2017 at 11:13 PM, Jack Purdum via Groups.Io <econjack@...> wrote:
You should be ok with either, but the MAR-3SM is considered obsolete now.

Jack, W8TEE


From: Doug W <dougwilner@...>
To: [email protected]
Sent: Sunday, May 28, 2017 1:35 PM
Subject: Re: [BITX20] SMD orientation

Your BOM calls out a MAR-3SM+.? Most of what I am finding online is a MAR-3SM.? Do you know if the + designates anything important?? I didn't see anything that looked meaningful in the data sheets I could find.
thanks



Re: Jitter

 

Yes I have one also...I made a moxon out of coat hangers and regularly work the fm sats...what I want is to work some ssb says like ao-7....
I have an rtl- sdr for receiving via sdr console v2.
I'm thinking of converting the BITX40 to 10 meters and using one of those Russian transverters for xmit...

On May 28, 2017 10:20 AM, "Jamie Rolfe" <j.rolfe8@...> wrote:

Hi David,?

I know.? These Bitx40 kits are excellent.? Glad you're having fun. It took me more time to make a box than to get on the air.?

If you want to get on 70cm cheaply I suggest the Baofeng uv-5r. They are an HT that run about $39. I've had mine for about 4 months and I've only had to charge it twice with stock battery. Accessories are super cheap online as well.?

I think I got mine from if I remember correctly.?

Cheers

Jamie VA3RLF?

Re: SMD orientation

Jack Purdum
 

You should be ok with either, but the MAR-3SM is considered obsolete now.

Jack, W8TEE


From: Doug W <dougwilner@...>
To: [email protected]
Sent: Sunday, May 28, 2017 1:35 PM
Subject: Re: [BITX20] SMD orientation

Your BOM calls out a MAR-3SM+.? Most of what I am finding online is a MAR-3SM.? Do you know if the + designates anything important?? I didn't see anything that looked meaningful in the data sheets I could find.
thanks


Re: SMD orientation

 

Your BOM calls out a MAR-3SM+.? Most of what I am finding online is a MAR-3SM.? Do you know if the + designates anything important?? I didn't see anything that looked meaningful in the data sheets I could find.
thanks
Re: source for AD9850 DDS module for W8TEE TFT/VFO?

Jack Purdum
 

SainSmart has them, but pulled the old switcheroo on me. I ordered 25 of the Type II that I need and they were advertised at $12.73. I got them down to $12 for 25. They then informed me that the shipment was delayed. Later I got a shipment statement with their part number. I went to their site to compare the number with my order and discovered that the part number was for a Type I, which wasn't even on the page before. The Type II was also listed on the page, but for $23. I raised Holy Hell and they said they would "fix it". I don't know what that means yet, but will let you know what I've found out.

One of my User Group members (SoftwareControlHamRadio) is making a PCB that takes a Type I and fits it into the Type II mount configuration. After he reports back, I post his contact info here. He feels it will be under $2 for the adapter. We'll see.

Jack, W8TEE


From: Doug W <dougwilner@...>
To: [email protected]
Sent: Sunday, May 28, 2017 12:32 PM
Subject: [BITX20] source for AD9850 DDS module for W8TEE TFT/VFO?

Has anyone found a reliable source for the correct version of the AD9850 DDS module for Jack's TFT/VFO board?? I am dreading waiting a month for the slow boat only to find out I got the wrong one.
thanks
Doug


source for AD9850 DDS module for W8TEE TFT/VFO?

 

Has anyone found a reliable source for the correct version of the AD9850 DDS module for Jack's TFT/VFO board?? I am dreading waiting a month for the slow boat only to find out I got the wrong one.
thanks
Doug
SMD orientation

Jack Purdum
 

There seems to be some confusion about how U2, the SMD part, is oriented on the PCB. I've attached a photo that should clear that up.

SMDMountPosition.jpg

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