Date   
Re: Replacing the Rotary Encoder #ubitx

Jack Purdum
 

It could also be done in software.

Jack, W8TEE



From: Walter <W9KJO@...>
To: BITX20@groups.io
Sent: Tuesday, February 20, 2018 2:38 PM
Subject: Re: [BITX20] Replacing the Rotary Encoder #ubitx

If one wanted to lock out the rotary encoder, like some rigs which have a lock button for their tuner.

Could one just break one of the encoder lines with a switch, say the ground wire, and get the effect of locking to tuner?

73 W9KJO


Re: RD16HHF1 in the uBITX #ubitx

RCBoatGuy
 

The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.

Carl,
K0MWC

Re: Replacing the Rotary Encoder #ubitx

Walter
 

If locking were accomplished in software then one would have to press the encoder and could shift the frequency.

If the button on the ground wire will work that seems like and nice solution.

73, W9KJO

Re: rv2- messed up setting and txing like mad!!!

Alan -MMØWXT
 

I will rattle through your kindly provided steps once I have a sleep. tiredness and absent mindedness got me into this pickle in the first place.

On that note a VERY BIG THANK YOU. And I will get back to you guys sokn.

73's & NN
Alan

Re: RD16HHF1 in the uBITX #ubitx

Jerry Gaffke
 

The best solution would be to get the transmit power amp chain to behave,
giving uniform power out across the bands.

Failing that, the PE4312 attenuator would be good, though a tough package 
for many to work with.  Almost impossible to just dead-bug into place.

Perhaps we could adjust the value of the emitter resistors at Q90 and Q911/Q912 depending
on the band selected.  Add an extra emitter resistor in parallel, connected to ground only when
a 2n7002 FET is turned on.  Use the band select relaly control lines TXB and TXC to
control the FET's.  Cost of maybe $0.25 in volume.

Jerry, KE7ER


On Tue, Feb 20, 2018 at 12:46 pm, RCBoatGuy wrote:
The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.

Re: RD16HHF1 in the uBITX #ubitx

Gordon Gibby
 

or maybe just a front panel knob to do "power level"??   Heathkits had one of those..... In this case, it might have to be RF, but if you went with a composite logarithmic, stepped the gain of the TX chain up a bit  (plus apply the final transformer fix)   --- connect  the  "power level" knob with RG-174 coax and set the gain manually for each band if desired.    Just push the key down (or a button if you prefer) and adjust just short of flattopping for example.    


My ICOMs have a "power level" knob.   Of course, it is much the same band to band, but that is a nicety.   


Just having the abilty to GET xx watts of power reliably on any chosen band would be quite nice for such a simple transceiver.   The composite control might not cost THAT much.   A simple fix that even a newbie could wire.   One coax in, one coax out,  mimics the audio volume control.


gordon






From: BITX20@groups.io <BITX20@groups.io> on behalf of Jerry Gaffke via Groups.Io <jgaffke@...>
Sent: Tuesday, February 20, 2018 5:00 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 in the uBITX
 
The best solution would be to get the transmit power amp chain to behave,
giving uniform power out across the bands.

Failing that, the PE4312 attenuator would be good, though a tough package 
for many to work with.  Almost impossible to just dead-bug into place.

Perhaps we could adjust the value of the emitter resistors at Q90 and Q911/Q912 depending
on the band selected.  Add an extra emitter resistor in parallel, connected to ground only when
a 2n7002 FET is turned on.  Use the band select relaly control lines TXB and TXC to
control the FET's.  Cost of maybe $0.25 in volume.

Jerry, KE7ER


On Tue, Feb 20, 2018 at 12:46 pm, RCBoatGuy wrote:
The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.

Re: Raduino Replacemnt, COMING SOON!

Gerry Kavanagh
 

Fantastic work, Nik. I’d definitely be interested in 2 or 3 smd or th boards, unpopulated. I’m curious to see how the 8307 fares. In my experience they need a fair bit of shielding.
73 de Gerry/EI8DRB 

Re: RD16HHF1 in the uBITX #ubitx

RCBoatGuy
 

You can always buy the board for a little over 17 Euros.

Re: RD16HHF1 in the uBITX #ubitx

Eric KE6US
 

Tough for many to work with because they won't. Homebrewers are going to have to  learn a few SIMPLE and CHEAP tricks to solder devices like this. I've been using this process for several years without difficulties.

A syringe, a small tweezer to place the parts, solder paste and a $20 embossing tool (heat gun) from WalMart or any craft store. It makes the 20-QFN or any other SMT easy. Especially with a PCB or breakout board for the part. Dozens of suppliers make them for every package type. Several of them on OSHPark for dirt cheap and a modest lead time.

http://kd5ssj.com/solderpaste/smt-tools-and-process

I showed my 7 year old granddaughter how to do it, and she begs me to let her do more. The only hard part for her is squeezing the solder paste out of the syringe. She's tiny and doesn't have the hand strength to do it. The paste is thick and the hole in the syringe is very small.

Steady hands and a good magnifying light and you have everything you need. I'm not 7, I'm 75. I wouldn't care if all thru-hole parts disappeared tomorrow, though I might have a problem keeping my boatanchors on the air.

Stop whining about SMT (not you, Jerry) and give it a serious try. It's fun and it's easy. If you make a mistake, heat the part up, scrape it off and start over. No vias to worry about destroying to clean out holes.

Eric KE6US


On 2/20/2018 2:00 PM, Jerry Gaffke via Groups.Io wrote:
The best solution would be to get the transmit power amp chain to behave,
giving uniform power out across the bands.

Failing that, the PE4312 attenuator would be good, though a tough package 
for many to work with.  Almost impossible to just dead-bug into place.

Perhaps we could adjust the value of the emitter resistors at Q90 and Q911/Q912 depending
on the band selected.  Add an extra emitter resistor in parallel, connected to ground only when
a 2n7002 FET is turned on.  Use the band select relaly control lines TXB and TXC to
control the FET's.  Cost of maybe $0.25 in volume.

Jerry, KE7ER


On Tue, Feb 20, 2018 at 12:46 pm, RCBoatGuy wrote:
The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.

Re: Raduino Replacemnt, COMING SOON!

LKNDAVE
 

#3 sweeper version. this is good
dave
n4lkin

Re: RD16HHF1 in the uBITX #ubitx

Jack Purdum
 

I've run into the SMT inertia as well. AT our club meeting next month, I am setting up three solder stations with three of these:


and I'm going to have the members each solder as small a part as they can handle. I think once they do it, they will see how easy it really is. BTW, when done and voltage is applied at the bottom center of the wheel, the LED's should light up. The whole thing cost $2.29 with free shipping! Once they see how easy it is, then I'm going to push how cheap the SMT's are.

Jack, W8TEE



From: Eric KE6US <eric.csuf@...>
To: BITX20@groups.io
Sent: Tuesday, February 20, 2018 9:13 PM
Subject: Re: [BITX20] RD16HHF1 in the uBITX

Tough for many to work with because they won't. Homebrewers are going to have to  learn a few SIMPLE and CHEAP tricks to solder devices like this. I've been using this process for several years without difficulties.
A syringe, a small tweezer to place the parts, solder paste and a $20 embossing tool (heat gun) from WalMart or any craft store. It makes the 20-QFN or any other SMT easy. Especially with a PCB or breakout board for the part. Dozens of suppliers make them for every package type. Several of them on OSHPark for dirt cheap and a modest lead time.
I showed my 7 year old granddaughter how to do it, and she begs me to let her do more. The only hard part for her is squeezing the solder paste out of the syringe. She's tiny and doesn't have the hand strength to do it. The paste is thick and the hole in the syringe is very small.
Steady hands and a good magnifying light and you have everything you need. I'm not 7, I'm 75. I wouldn't care if all thru-hole parts disappeared tomorrow, though I might have a problem keeping my boatanchors on the air.
Stop whining about SMT (not you, Jerry) and give it a serious try. It's fun and it's easy. If you make a mistake, heat the part up, scrape it off and start over. No vias to worry about destroying to clean out holes.
Eric KE6US

On 2/20/2018 2:00 PM, Jerry Gaffke via Groups.Io wrote:
The best solution would be to get the transmit power amp chain to behave,
giving uniform power out across the bands.

Failing that, the PE4312 attenuator would be good, though a tough package 
for many to work with.  Almost impossible to just dead-bug into place.

Perhaps we could adjust the value of the emitter resistors at Q90 and Q911/Q912 depending
on the band selected.  Add an extra emitter resistor in parallel, connected to ground only when
a 2n7002 FET is turned on.  Use the band select relaly control lines TXB and TXC to
control the FET's.  Cost of maybe $0.25 in volume.

Jerry, KE7ER


On Tue, Feb 20, 2018 at 12:46 pm, RCBoatGuy wrote:
The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.



Re: RD16HHF1 in the uBITX #ubitx

Rob Snow
 

I've caught it too, based on this group.  I ordered several of the above (and couple of the easy ones too) and am going to play and see if I can add "SMT capable" to my meager soldering skills.

Rob
AG5OV

Re: RD16HHF1 in the uBITX #ubitx

VE7WQ
 

Hello Jack,


With three of what? No picture (:

The whole thing cost $2.29 with free shipping!

URL please.


73! George

VE7WQ


Tuesday, February 20, 2018, you wrote:

JPvGI> I've run into the SMT inertia as well. AT our club meeting next month, I

JPvGI> am setting up three solder stations with three of these:


JPvGI> and I'm going to have the members each solder as small a part as they

JPvGI> can handle. I think once they do it, they will see how easy it really is.

JPvGI> BTW, when done and voltage is applied at the bottom center of the wheel,

JPvGI> the LED's should light up. The whole thing cost $2.29 with free shipping!

JPvGI> Once they see how easy it is, then I'm going to push how cheap the SMT's are.

JPvGI> Jack, W8TEE


Re: RD16HHF1 in the uBITX #ubitx

Jack Purdum
 

Sorry about that. See ebay #192343157603 and picture at bottom.

Jack, W8TEE



From: VE7WQ <v@...>
To: BITX20@groups.io
Sent: Tuesday, February 20, 2018 11:23 PM
Subject: Re: [BITX20] RD16HHF1 in the uBITX

Hello Jack,

With three of what? No picture (:
The whole thing cost $2.29 with free shipping!
URL please.

73! George
VE7WQ

Tuesday, February 20, 2018, you wrote:
JPvGI> I've run into the SMT inertia as well. AT our club meeting next month, I
JPvGI> am setting up three solder stations with three of these:

JPvGI> and I'm going to have the members each solder as small a part as they
JPvGI> can handle. I think once they do it, they will see how easy it really is.
JPvGI> BTW, when done and voltage is applied at the bottom center of the wheel,
JPvGI> the LED's should light up. The whole thing cost $2.29 with free shipping!
JPvGI> Once they see how easy it is, then I'm going to push how cheap the SMT's are.
JPvGI> Jack, W8TEE



Re: RD16HHF1 in the uBITX #ubitx

 

Jack,
We have decided to go down this road also, we got a 5 pack, and hot air station, going to do a toaster oven reflow oven, and maybe a George Forman preheat grill…I am working on some ideas for these rabbit holes….what I do best…

My first try at one of these boards with hot air….without preheat….very predictable…board was not warm enough, nice little balls....talked with a former production manager at a electronics manufacturer….got some good ideas…no way can we duplicate how its done in the ‘real’ world…but, then, I am not trying to do that.

Also have got one of those tetra whisper aquarium pumps and hooked it up to one of those ‘extra’ syringes left in my room at my resort stay before the new year….so I have been picking up large SMDs and inhaling small ones….

I went to my storage junk box and pulled out some drawer slides…..and ordered one of those usb scopes on monday? amazon had a lightning deal for 30 bucks….

We are going to dive into the deep end of the pool next month….

After our Builders Group finishes the new Antenna Analyzer, then we move onto BitX mods….any and all of them, and then for at least a few mods…done from the perspective of a club designed circuit, then use a CAD program and create the gerbers, then order the boards….whole life cycle….show them they can do it….by having them do it.

maybe start with polarity protection circuit, definitely some power supplies, probably AGC…..not because it hasn’t been done….but, exactly for that reason…most don’t think they can do any of this….if it is something they want to have…then I see some desire to build it….if they build it….some will learn how it works….when they have to make it work

Jack, besides the circuit in the center, if you notice the two pads at the bottom of each column of practice random devices by size? Well you should get some flavor of something besides infinite if you put a multimeter there….as the devices in a column seem to be in series with the pair of pads.  A check on soldering skills in each column.

gotta slow down….

but not until we also write some sketches….

I am going to need a bigger bucket for my list.

I can see how wrong I was when I working my last few years in electronics (mid nineties) and encountered modifications that required some large format SMD rework on a small scale….and I became an instant combatant….as I was doing in home repairs and battling a worsening tremor…I can overcome all those big problems today for pennies on the dollar back then….and go to youtube college and talk group tutoring….

Craig
KM4YEC



On Feb 20, 2018, at 10:47 PM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:

I've run into the SMT inertia as well. AT our club meeting next month, I am setting up three solder stations with three of these:


and I'm going to have the members each solder as small a part as they can handle. I think once they do it, they will see how easy it really is. BTW, when done and voltage is applied at the bottom center of the wheel, the LED's should light up. The whole thing cost $2.29 with free shipping! Once they see how easy it is, then I'm going to push how cheap the SMT's are.

Jack, W8TEE



From: Eric KE6US <eric.csuf@...>
To: BITX20@groups.io
Sent: Tuesday, February 20, 2018 9:13 PM
Subject: Re: [BITX20] RD16HHF1 in the uBITX

Tough for many to work with because they won't. Homebrewers are going to have to  learn a few SIMPLE and CHEAP tricks to solder devices like this. I've been using this process for several years without difficulties.
A syringe, a small tweezer to place the parts, solder paste and a $20 embossing tool (heat gun) from WalMart or any craft store. It makes the 20-QFN or any other SMT easy. Especially with a PCB or breakout board for the part. Dozens of suppliers make them for every package type. Several of them on OSHPark for dirt cheap and a modest lead time.
I showed my 7 year old granddaughter how to do it, and she begs me to let her do more. The only hard part for her is squeezing the solder paste out of the syringe. She's tiny and doesn't have the hand strength to do it. The paste is thick and the hole in the syringe is very small.
Steady hands and a good magnifying light and you have everything you need. I'm not 7, I'm 75. I wouldn't care if all thru-hole parts disappeared tomorrow, though I might have a problem keeping my boatanchors on the air.
Stop whining about SMT (not you, Jerry) and give it a serious try. It's fun and it's easy. If you make a mistake, heat the part up, scrape it off and start over. No vias to worry about destroying to clean out holes.
Eric KE6US

On 2/20/2018 2:00 PM, Jerry Gaffke via Groups.Io wrote:
The best solution would be to get the transmit power amp chain to behave,
giving uniform power out across the bands.

Failing that, the PE4312 attenuator would be good, though a tough package 
for many to work with.  Almost impossible to just dead-bug into place.

Perhaps we could adjust the value of the emitter resistors at Q90 and Q911/Q912 depending
on the band selected.  Add an extra emitter resistor in parallel, connected to ground only when
a 2n7002 FET is turned on.  Use the band select relaly control lines TXB and TXC to
control the FET's.  Cost of maybe $0.25 in volume.

Jerry, KE7ER


On Tue, Feb 20, 2018 at 12:46 pm, RCBoatGuy wrote:
The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.




RD16HHF1 in the uBITX or something like that...

K9HZ <bill@...>
 

Yes but the difference, at least for me, is that I’ve used the AD8367 in designs before so I know the quirks and benefits of that part.  I’ve never used the PE3412 but I sure will give it a try.  One alone doesn’t appear to have enough attenuation for a reasonable AGC and there is the question as to if the feedback loop passed back through a processor and via the I2C buss would be fast enough for a good AGC.  I am actually working on a true RF AGC for the uBITx right now using the AD8367 variable attenuator and the AD8361 RMS Detector with low pass filter.  It’s analog.  Just had to add an integrator in the loop (op amp) to get a picture perfect RF AGC circuit with only three parts that fit on a form just a little bigger than a quarter.  Just testing it now.  Seems to work like a charm!

 

 

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

 

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

 

Owner – Operator

Villa Grand Piton – J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com

Like us on Facebook! facebook icon

 

Moderator – North American QRO Yahoo Group.

 

email:  bill@...

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of RCBoatGuy via Groups.Io
Sent: Tuesday, February 20, 2018 2:46 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 in the uBITX

 

The AD8367 is more than twice as expensive as the PE4312, though the AD8367 datasheet does show how to implement AGC with it using 2 additional chips.  So if you want to include AGC with programmable attenuation, the AD8367 may be the way to go.

However, for less than the cost of a single AD8367 you can put two PE3412's in series to get attenuation up to 62dB.  

Not sure what the best trade-off is.  Depends on your needs and price range, I guess.

Carl,
K0MWC


Virus-free. www.avg.com

Re: RD16HHF1 in the uBITX #ubitx

VE7WQ
 

Thank you Jack,


I ordered a SMT SMD Component Welding Practice Board Kit US $0.99

http://tinyurl.com/ya7l9hym


Question, could I use this tape:

Self-adhesive Tape Soldering High Temperature Heat Resistant for BGA PCB SMT US $0.99

https://tinyurl.com/yak4p4ea

with my Hakko FX-901 Cordless Soldering Iron to solder SMTs, SMDs?


73! George

VE7WQ


Tuesday, February 20, 2018, you wrote:

JPvGI> Sorry about that. See ebay #192343157603 and picture at bottom.

JPvGI> Jack, W8TEE



v@...>

BITX20@groups.io




JPvGI> #yiv0457961818 #yiv0457961818 --body {margin:5px 5px 5px

JPvGI> 5px;background-color:#fdf4d7;}#yiv0457961818 #yiv0457961818 hr

JPvGI> {color:#000000;}#yiv0457961818 body, #yiv0457961818 table #yiv0457961818

JPvGI> {font-size:12pt;font-style:normal;font-weight:normal;color:#000000;text-decoration:none;}#yiv0457961818

JPvGI> span.yiv0457961818rvts1 #yiv0457961818

JPvGI> {font-size:10pt;font-weight:bold;color:#0000ff;}#yiv0457961818

JPvGI> span.yiv0457961818rvts2 #yiv0457961818

JPvGI> {font-size:10pt;font-weight:bold;color:#000080;}#yiv0457961818

JPvGI> span.yiv0457961818rvts3 #yiv0457961818

JPvGI> {font-size:10pt;font-style:italic;color:#800000;}#yiv0457961818

JPvGI> a.yiv0457961818rvts4, #yiv0457961818 span.yiv0457961818rvts4

JPvGI> #yiv0457961818

JPvGI> {font-size:10pt;color:#008000;text-decoration:underline;}#yiv0457961818

JPvGI> a.yiv0457961818rvts5, #yiv0457961818 span.yiv0457961818rvts5

JPvGI> #yiv0457961818

JPvGI> {font-size:10pt;color:#008000;text-decoration:underline;}#yiv0457961818

JPvGI> span.yiv0457961818rvts6{font-style:italic;color:#ff0000;}#yiv0457961818

JPvGI> span.yiv0457961818rvts7{font-style:italic;color:#ff0000;}#yiv0457961818

JPvGI> a.yiv0457961818rvts8, #yiv0457961818

JPvGI> span.yiv0457961818rvts8{color:#0000ff;text-decoration:underline;}#yiv0457961818

JPvGI> #yiv0457961818 p, #yiv0457961818 ul, #yiv0457961818 ol #yiv0457961818

JPvGI> {text-align:left;text-indent:0px;padding:0px 0px 0px 0px;margin:0px 0px

JPvGI> 0px 0px;}#yiv0457961818 .yiv0457961818rvps1 #yiv0457961818

JPvGI> {text-align:center;}#yiv0457961818 Hello Jack,

JPvGI> With three of what? No picture (:The whole thing cost $2.29 with free shipping!URL please.

JPvGI> 73! GeorgeVE7WQ

JPvGI> Tuesday, February 20, 2018, you wrote:JPvGI> I've run into the SMT

JPvGI> inertia as well. AT our club meeting next month, IJPvGI> am setting up

JPvGI> three solder stations with three of these:

JPvGI>> and I'm going to have the members each solder as small a part as theyJPvGI> can handle. I think once they do it, they will see how easy it really is.JPvGI> BTW, when done and voltage is applied at the bottom center of the wheel,JPvGI> the LED's should light up. The whole thing cost $2.29 with free shipping!JPvGI> Once they see how easy it is, then I'm going to push how cheap the SMT's are.JPvGI> Jack, W8TEE




Re: RD16HHF1 in the uBITX #ubitx

VE7WQ
 

Thank you Eric,


What do you think about this heat gun on eBay?

110V 300W Hot Air Gun Hand Hold Mini Heat Gun for Embossing Heat Tool $10.76

https://tinyurl.com/y7vrbfvt

Or should I buy a $20 embossing tool (heat gun) from WalMart or any craft store ?


73! George

VE7WQ


Tuesday, February 20, 2018, among other things you wrote:

EK> A syringe, a small tweezer to place the parts, solder paste and a $20 

EK> embossing tool (heat gun) from WalMart or any craft store. It makes the 

EK> 20-QFN or any other SMT easy. 

Re: My uBitx shipped today

Methas
 

Thanks for updating the shipment status. I ordered on Feb 04. Still wating and exciting to work on uBITX.

E21TUX

Re: rv2- messed up setting and txing like mad!!!

 

As I remember my uBitx with everything wired correctly and 4.7K omitted the board
would go didahdiah indefinitely.

One board came with a defective USB socket which I fixed. After a 10 days stint at
my farm and back the board was refusing to program but running fine with my old
experimental sketch. A reset completely bricked it. I desoldered the Nano from the
nano side and cleaned the (raduino) pins well. I then plugged in a new nano but did not solder
it as it a tight fit. Uploaded the sketch into it and glad to say all is well with it now.

The spare nano I used was without pins soldered. Something like this:
https://www.amazon.co.uk/Arduino-Elegoo-board-ATmega328P-compatible/dp/B072BMYZ18/ref=sr_1_3?ie=UTF8&qid=1519187490&sr=8-3&keywords=arduino+nano



Raj

At 20/02/2018, you wrote:
Hi Raj and thank you! It was all ok on receive up until today. Once the raduino is plugged into ubitx it goes haywire and just goes on and of so can't even get as far as receive.

It seems tied in more with the broken 4.7k

Can you buy spare raduinos? or how do I go about fixing a fault relating to 4.7k malfunction?

Thank you

Alan