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Re: uBITX Questions

 

members trying for RD16 on ebay are mostly landing at fakes. I had a lot of 10 (supposedly re printed stuff using IRF5** series.
?
After a long search i could find only one seller who sold genuine stuff on ebay. But he charges more.
?On the item description you clearly find that item is generic, or unbranded , or NEW.
?they are all fake



On Tue, Mar 21, 2017 at 5:00 AM, Trent Trent <vk7hrs@...> wrote:

Irf530 would be better HF power and cheaper than the rd16 but a rf16vhf would b nice


On 21 Mar 2017 4:27 AM, "Jerry Gaffke via Groups.Io" <jgaffke=[email protected]> wrote:

Easy enough to twist the gate and drain leads on the RD16HHF1 such that they fit into a board drilled out for the IRF510.? Maybe put a bit of heat shrink on them to ensure they don't touch where they cross over.? Allison reports the IRF510 works as well as the RD16* parts at HF through 50mhz, ?primary reasons to move to the RD16HHF1 is heat: ?avoids need for mica insulators at the heatsink, and gives better heat transfer from die to package tab.? Otherwise the IRF510 is an excellent choice for a minimum cost rig.? Good luck with hacking the uBitx PA to work smoothly from 160 through 2 meters, I'm fine with a good solid simple easy cheap 80/40/20 SSB/CW rig.

Jerry, KE7ER

On Mon, Mar 20, 2017 at 08:24 am, Lawrence Galea wrote:

I suggest that when you do the pcb design for the ¦ÌBITX make pads for the PA so that people can either use the IRF510 or whatever you are going to finally use and an RD16HHF1 or RD16HVF1.
This would allow people to use the much sturdier RD if they want to and use only 12v for the supply and more so if they are going to use it up to 30MHz or even higher, perhaps on 50MHz and 70MHz with the RD higher efficiency.
The RD16HHF1 works well in the Ukranian transverter at 70MHz.
So perhaps you will remember these points and why not, 144MHz perhaps?

?




--
Regards
Sarma
?
Master file for Bitx40

College Professor Simon Thompson
 

I cannot find a master file, with all of the recent fixes, for the Bitx40. I am learning how to use the Arduino, and it isn't the best time to be trying to figure out how to incorporate the various fixes that have been posted to GitHub. Can some kind person upload the Raduino code in its current, complete, form? And append a note about which version of the Etherkit library to use. I am having a hell of a time trying to compile the code, and it is putting me off the whole project.?
Re: Price reduction on case

 

¿ªÔÆÌåÓý

Might come to that Jack.

Bill, VK7MX


On 21/03/2017 1:36 PM, Jack Purdum via Groups.Io wrote:

Bill:

I'd yell at them a little and say that you placed the order when the sale was on and that they should honor the sale price. Won't hurt to try.

Jack, W8TEE


From: dvhammer_99 <DaleHammer@...>
To: [email protected]
Sent: Monday, March 20, 2017 9:04 PM
Subject: Re: [BITX20] Price reduction on case

Bill,
I ordered one successfully just after Jack mentioned it.? We all must have bought them out. J
73,
Dale K9NN
?
From: [email protected] [mailto:[email protected]] On Behalf Of William R Maxwell
Sent: Monday, March 20, 2017 8:59 PM
To: [email protected]
Subject: Re: [BITX20] Price reduction on case
?
Hmmm, I tried to order a couple this morning, Downunder time, but even though it shows two remaining, the item is marked for "restocking", expected on 28 March, the day after the sale price ends. The page allows me to add one to my "wish list" but not to actually place an order. That hardly seems ethical.
Anybody had better luck with an order today?
Bill, VK7MX
?
On 21/03/2017 12:10 AM, Jack Purdum via Groups.Io wrote:
I've purchased this case from Banggood and it is very nice. It could be used for a variety of projects.The price is now $8 US.
See item?1035473 on their web site.
Jack, W8TEE
?


This email has been checked for viruses by Avast antivirus software.




Re: Price reduction on case

Jack Purdum
 

Bill:

I'd yell at them a little and say that you placed the order when the sale was on and that they should honor the sale price. Won't hurt to try.

Jack, W8TEE


From: dvhammer_99 <DaleHammer@...>
To: [email protected]
Sent: Monday, March 20, 2017 9:04 PM
Subject: Re: [BITX20] Price reduction on case

Bill,
I ordered one successfully just after Jack mentioned it.? We all must have bought them out. J
73,
Dale K9NN
?
From: [email protected] [mailto:[email protected]] On Behalf Of William R Maxwell
Sent: Monday, March 20, 2017 8:59 PM
To: [email protected]
Subject: Re: [BITX20] Price reduction on case
?
Hmmm, I tried to order a couple this morning, Downunder time, but even though it shows two remaining, the item is marked for "restocking", expected on 28 March, the day after the sale price ends. The page allows me to add one to my "wish list" but not to actually place an order. That hardly seems ethical.
Anybody had better luck with an order today?
Bill, VK7MX
?
On 21/03/2017 12:10 AM, Jack Purdum via Groups.Io wrote:
I've purchased this case from Banggood and it is very nice. It could be used for a variety of projects.The price is now $8 US.
See item?1035473 on their web site.
Jack, W8TEE
?


This email has been checked for viruses by Avast antivirus software.



Re: encoder

 

Jack,

...and here's (one reason) why I love this hobby: one problem statement, so many useful solutions!

/r

Chris
Re: Broken Capacitor right behind mike connector

N7PXY
 

I have some 0805 SMD caps in 1000pF. If these will work for you send me a PM with address and I'll send a couple your way.

hickspj467?? at?? comcast.net

PS - it is possible to solder 0805s across 1206 pads; touchy but doable. FYI

PJH, N7PXY
Re: Price reduction on case

 

¿ªÔÆÌåÓý

Thanks Dale. Ah, the tyrrany of distance and all those associated time zones. Sometimes being a day ahead of you blokes is of no advantage whatsoever.

I'll keep checking the webpage, in case this is just a glitch.

Bill, VK7MX


On 21/03/2017 12:04 PM, dvhammer_99 wrote:

Bill,

I ordered one successfully just after Jack mentioned it.? We all must have bought them out. J

73,

Dale K9NN

?

From: [email protected] [mailto:[email protected]] On Behalf Of William R Maxwell
Sent: Monday, March 20, 2017 8:59 PM
To: [email protected]
Subject: Re: [BITX20] Price reduction on case

?

Hmmm, I tried to order a couple this morning, Downunder time, but even though it shows two remaining, the item is marked for "restocking", expected on 28 March, the day after the sale price ends. The page allows me to add one to my "wish list" but not to actually place an order. That hardly seems ethical.

Anybody had better luck with an order today?

Bill, VK7MX

?

On 21/03/2017 12:10 AM, Jack Purdum via Groups.Io wrote:

I've purchased this case from Banggood and it is very nice. It could be used for a variety of projects.The price is now $8 US.

See item?1035473 on their web site.

Jack, W8TEE

?



This email has been checked for viruses by Avast antivirus software.



Re: Price reduction on case

 

¿ªÔÆÌåÓý

Bill,

I ordered one successfully just after Jack mentioned it.? We all must have bought them out. J

73,

Dale K9NN

?

From: [email protected] [mailto:[email protected]] On Behalf Of William R Maxwell
Sent: Monday, March 20, 2017 8:59 PM
To: [email protected]
Subject: Re: [BITX20] Price reduction on case

?

Hmmm, I tried to order a couple this morning, Downunder time, but even though it shows two remaining, the item is marked for "restocking", expected on 28 March, the day after the sale price ends. The page allows me to add one to my "wish list" but not to actually place an order. That hardly seems ethical.

Anybody had better luck with an order today?

Bill, VK7MX

?

On 21/03/2017 12:10 AM, Jack Purdum via Groups.Io wrote:

I've purchased this case from Banggood and it is very nice. It could be used for a variety of projects.The price is now $8 US.

See item?1035473 on their web site.

Jack, W8TEE

?



This email has been checked for viruses by Avast antivirus software.


Re: Q9 bad

 

A lifetime stock for the junque box.

73 Ken

On Mon, Mar 20, 2017 at 9:00 PM, Roy Appleton <twelveoclockhigh@...> wrote:
Ken, thanks for the info, now I'll have a 100?mmbt3904 also!!! ?:-))

Roy,
WA0YMH

On Mar 20, 2017 7:50 PM, "Ken" <chase8043@...> wrote:
Farhan had to use the BC849C footprint in the schematic, but the part is actuallya?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 8:43 PM, Roy Appleton <twelveoclockhigh@...> wrote:
Oops, I just ordered a 100 BC849C off of eBay! Back to the drawing board!

Roy
WA0YMH

On Mar 20, 2017 7:38 PM, "Ken" <chase8043@...> wrote:
Also Ron, the transistor is a 2N3904 but in a SMD package as a?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Q9 bad

 

Ken, thanks for the info, now I'll have a 100?mmbt3904 also!!! ?:-))

Roy,
WA0YMH

On Mar 20, 2017 7:50 PM, "Ken" <chase8043@...> wrote:
Farhan had to use the BC849C footprint in the schematic, but the part is actuallya?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 8:43 PM, Roy Appleton <twelveoclockhigh@...> wrote:
Oops, I just ordered a 100 BC849C off of eBay! Back to the drawing board!

Roy
WA0YMH

On Mar 20, 2017 7:38 PM, "Ken" <chase8043@...> wrote:
Also Ron, the transistor is a 2N3904 but in a SMD package as a?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Price reduction on case

 

¿ªÔÆÌåÓý

Hmmm, I tried to order a couple this morning, Downunder time, but even though it shows two remaining, the item is marked for "restocking", expected on 28 March, the day after the sale price ends. The page allows me to add one to my "wish list" but not to actually place an order. That hardly seems ethical.

Anybody had better luck with an order today?

Bill, VK7MX


On 21/03/2017 12:10 AM, Jack Purdum via Groups.Io wrote:

I've purchased this case from Banggood and it is very nice. It could be used for a variety of projects.The price is now $8 US.

See item?1035473 on their web site.

Jack, W8TEE
Re: Broken Capacitor right behind mike connector

Michael Davis
 

10D0p. I believe the D is tolerance. 10 picofarad?

Sent from Mike's iPad WA1MAD
Re: Q9 bad

 

Farhan had to use the BC849C footprint in the schematic, but the part is actuallya?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 8:43 PM, Roy Appleton <twelveoclockhigh@...> wrote:
Oops, I just ordered a 100 BC849C off of eBay! Back to the drawing board!

Roy
WA0YMH

On Mar 20, 2017 7:38 PM, "Ken" <chase8043@...> wrote:
Also Ron, the transistor is a 2N3904 but in a SMD package as a?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Q9 bad

 

Oops, I just ordered a 100 BC849C off of eBay! Back to the drawing board!

Roy
WA0YMH

On Mar 20, 2017 7:38 PM, "Ken" <chase8043@...> wrote:
Also Ron, the transistor is a 2N3904 but in a SMD package as a?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Q9 bad

 

Also Ron, the transistor is a 2N3904 but in a SMD package as a?mmbt3904.

73 Ken

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Broken Capacitor right behind mike connector

 

¿ªÔÆÌåÓý

Thank you for the help.

?

From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Monday, March 20, 2017 8:09 PM
To: [email protected]
Subject: Re: [BITX20] Broken Capacitor right behind mike connector

?

Radio Shack sells them 2 for $1.30, Debco Electronics sells them 25 for $2, Tayda Electronics sells 100 for $1.00 (they have a US distribution warehouse) or send me an SASE and I'll give you one. I'm ok in QRZ.com. These won't be SMT, but you an still use them. If you need SMT's, Digikey sells them for about $0.67 each.

?

Jack, W8TEE

?

From: "k4iap@..." <k4iap@...>
To: [email protected]
Sent: Monday, March 20, 2017 7:57 PM
Subject: Re: [BITX20] Broken Capacitor right behind mike connector

?

Next where to get one without having to order 100 of them?

?
Re: Q9 bad

 

Hi Roy

I had a problem of the Si5351 getting to the mixer. Turned out my Q9 was shot. I happened to have some on hand.

73

Ken VA3ABN

On Mon, Mar 20, 2017 at 6:51 PM, Roy Appleton <twelveoclockhigh@...> wrote:

Finally got back to troubleshooting my BITX40 transmitter failure. Using Randy K7AGE voltage chart, the only stage that had bad DC voltages was Q9, with just a few milivolts on the base, emitter and collector. What I don't understand is that Q9 is used in both transmit and receive and yet my BITX40 receiver seems to be working.


Any thoughts, and also any suggestions on how to "test" Q9?


Thanks,

Roy

WA0YMH
Re: Broken Capacitor right behind mike connector

Jack Purdum
 

Radio Shack sells them 2 for $1.30, Debco Electronics sells them 25 for $2, Tayda Electronics sells 100 for $1.00 (they have a US distribution warehouse) or send me an SASE and I'll give you one. I'm ok in QRZ.com. These won't be SMT, but you an still use them. If you need SMT's, Digikey sells them for about $0.67 each.

Jack, W8TEE


From: "k4iap@..." <k4iap@...>
To: [email protected]
Sent: Monday, March 20, 2017 7:57 PM
Subject: Re: [BITX20] Broken Capacitor right behind mike connector

Next where to get one without having to order 100 of them?


Re: Order has not yet arrived

[email protected]
 

I ordered mine the other day and waiting for confirmation plus shipping info :)


-----Original Message-----
From: ve7hcw via Groups.Io <ve7hcw@...>
To: BITX20 <[email protected]>
Sent: Mon, Mar 20, 2017 6:38 pm
Subject: Re: [BITX20] Order has not yet arrived

SNr # A3-318?? ordered Feb_22_2017. shipped Mar_01_2017arrived? today? Mar_20_2017.? 26 days is not bad considering our custom department at time is slow.
? wayne? ve7hcw/va7at

Re: encoder

Jack Purdum
 

I buy them 10 at a time. This eBay ad is even less than $0.70 each, quantity 5. ?(See # 171907477425). You do have to pay attention, however, as some vendors sell encoders that do NOT have threaded shafts. Those are a little difficult to mount.

Jack, W8TEE

From: Allard PE1NWL <pe1nwl@...>
To: [email protected]
Sent: Monday, March 20, 2017 7:55 PM
Subject: Re: [BITX20] encoder

Thanks Jack,

I just looked up the KY-040 specs and saw that this type uses
photo-electric sensors, not mechanical contacts.
So should indeed be reliable over time.
Yes they're quite cheap (I didn't find them for the low price you bought
them for though)

73, Allard PE1NWL
92541 - 92560 of 116300