Date   
Re: QCX Mobile with New Amp

George Korper
 

Oh the plan is to set this up and do a YouTube video. Winding through a typical Mexican town, that will
serve a as something to watch while you are at the gym >;)

On Sun, Dec 22, 2019 at 1:08 PM ajparent1/KB1GMX <kb1gmx@...> wrote:
On Sun, Dec 22, 2019 at 07:52 AM, jjpurdum wrote:
penultimate
When I resort to long words I get strange looks.

On English, we speak a common language and it separates often exasperates us
frequently to great amusement.   If we add spellweck we then become despondent 
upon it.

For that I offer the the peak or maybe be pique of near nothing, summa nulla est.

 Allison
-------------------------------
Please reply on list so we can share.
Off list email goes to trash, I had to due to scrapers.

Re: QCX Mobile with New Amp

George Korper
 

That's 100 watts input into a very inefficient amp! I measure the watts output into the battery. 
Huge difference. My bike is designed to make electricity and when I go to 40 watts out into a battery
measured by an accurate amp meter that  output is sustainable at our age for less than 20 minutes,
so you are doing really well. Also you need to keep RPM above 76 to do it and not injure the knees. 
The calculated watts on the machines in the gym is bogus. So are the calories. Pedaling for an hour
uses much less than a chocolate chip cookie. 20 watts with the arms is pretty tough, and I do that 30 min/day
At our age the arms can be pretty equal to the legs. 

See why I wanted to attach the QCX? It is easy to pedal and QSO at 10-15 wpm and power that yourself. 
I have the rig and antenna across the shack and need the remote. I also will do the same on my 
regular bike with the rig, battery and amp in the basket in the back,  antenna behind the seat and frame as ground. 
Thus making summit or park activations a matter of arriving and parking, no set-up required. That is
mobile radio in my mind. My highway days are over. In Mexico we have a 'cyclopista' next to the highway
and it is pretty level. Dedicated to bikes and pedestrians, dogs, burros and horses but very fun. 

On Sun, Dec 22, 2019 at 12:26 PM Steve in Okinawa <sfab43@...> wrote:
According to a chart in my gym next to the cardio bikes, a healthy 70-year old male should be able to do 100+ watts for 20 minutes. Ah, those were the days! I'm on a beta-blocker now and  76 and can barely make 80.

Re: ProgRock Level Shifter

ajparent1/KB1GMX
 

John,

Funny story.  The upper circuit the EIA to TTL translator can be noxious.
An engineering buddy needed to translate the +-12 or greater EIA to 5V TTL.
So he used that with a 2n3904...  He kept killing the NMOS device  and could
not understand why.  So before plugging in yet another 8251A I suggested he
look at the emitter of the transistor with the terminal connected.  He was digital
guy so forgive him as he asked why he was seeing -5V on the emitter?  The
answer was reverse breakdown, the EB junction at about 7V looks like Zener
diode and passes it though to the emitter.  DIdn't help that the 10K to ground
was also a 200K (colorblind!).  Replacing the 10K(100K) to ground with 4.7K
and a diode (1n4148) with cathode to ground and anode to Base was the
solution.

Simple can be, or not.

Allison
-------------------------------
Please reply on list so we can share.
Off list email goes to trash, I had to due to scrapers.

Re: QCX Mobile with New Amp

ajparent1/KB1GMX
 

On Sun, Dec 22, 2019 at 07:52 AM, jjpurdum wrote:
penultimate
When I resort to long words I get strange looks.

On English, we speak a common language and it separates often exasperates us
frequently to great amusement.   If we add spellweck we then become despondent 
upon it.

For that I offer the the peak or maybe be pique of near nothing, summa nulla est.

 Allison
-------------------------------
Please reply on list so we can share.
Off list email goes to trash, I had to due to scrapers.

Re: QCX Mobile with New Amp

Steve in Okinawa
 

According to a chart in my gym next to the cardio bikes, a healthy 70-year old male should be able to do 100+ watts for 20 minutes. Ah, those were the days! I'm on a beta-blocker now and  76 and can barely make 80.

Re: 50W amplifier kit keying mod for open collector transmitters #mods

Chris Smith <me@...>
 

Quick update. I made a prototype of both ends of the switching channel. I used a P-channel MOSFET (Diodes Inc BS250P) initially. I blew the first one up dropping it in the carpet. Oops. The second attempt worked nicely but the noise immunity at the gate wasn't what I was after probably due to the impedance. I tested this by keying 15W over 3 feet of ladder line with the key line next to it to simulate quite horrible conditions. Adding capacitance across the gate to ground didn't help either. Adding a resistor from gate to ground worked better but not quite well enough as it acted as a voltage divider with the keying side of things. Therefore I went back to the original BJT design which is low impedance. This looked like it had some charge storage problems and capacitance not evident in the LTspice simulation (hence the prototype!) so a 470 ohm resistor was added from the collector to ground on the PNP transistor. This gave a fairly good 20ns rise and fall times. This 470R may be unnecessary due to R14 in real life so I will measure in situ when it arrives.



Best regards,

Chris Smith M0XTE

Re: QCX Mobile with New Amp

N5VMO Pat
 

Thanks George ..... I'm trying to get everything set back up after the move from the apartment and still trying to find all my stuff in boxes :-)))    Working on an old linear power supply ( as opposed to a inverter style type ) forgotten about for several years .... so why not get it back working =)


Re: QCX Mobile with New Amp

jjpurdum
 

I was SO wrong!

Jack, W8TEE

On Sunday, December 22, 2019, 11:10:48 AM EST, Hans Summers <hans.summers@...> wrote:


Hi Jack
 
PS. You just looked up penultimate, didn't you? Were you right?

Yes! And YES!

73 Hans G0UPL
The kit company that likes to say YES! 
http://qrp-labs.com

Re: QCX Mobile with New Amp

Hans Summers
 

Hi Jack
 
PS. You just looked up penultimate, didn't you? Were you right?

Yes! And YES!

73 Hans G0UPL
The kit company that likes to say YES! 
http://qrp-labs.com

Re: QCX Mobile with New Amp

jjpurdum
 

I do a lot of writing and still screw up all the time. Just turned in a chapter and used "peaked" when it should have been "piqued". That said, how many times have you seen people use "then" when it should have been "than"? I just learned about a month ago that my understanding of the word "penultimate" was absolutely wrong for three-quarters of a century! No matter what the age, one can still learn and correct their mistakes.

Jack, W8TEE

PS. You just looked up penultimate, didn't you? Were you right?

On Sunday, December 22, 2019, 10:43:03 AM EST, George Korper <georgekorper@...> wrote:


I'm  laughing at the error in my email.
Should I be thankful this Phone thinks for me as I am all thumbs.? Maybe if I speak in the future I will be more precise. Unless Google has  problems with my talking with my dentures in. Old, imprecise and inaccurate.  The Hat Trick.

On Sun, Dec 22, 2019, 9:06 AM Roger Hill <rhill@...> wrote:
Just to be precise ... I am old and like things to be 'right'...

Peddle == to sell stuff, possibly from a push bike.

Pedal == to rotate the bike's pedals with your legs and feet.

73
Roger
G3YTN

On 22 Dec 2019, at 11:00, George Korper <georgekorper@...> wrote:
For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42= ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: QCX Mobile with New Amp

George Korper
 

Pat that is a great idea. Glad to hear from you.


On Sun, Dec 22, 2019, 9:32 AM N5VMO Pat <n5vmo00@...> wrote:
  George Korper ..... I have do the same thing with a old junk yard mt bike and a trainer that I converted .... the key is the lead shot in the back tire for rotation stability while peddling the bike =)   All those gears help with the different riders and a bike training video to watch helps if you are inside for inspiration in thinking the rider is getting somewhere =)    Also it is a cardio workout to make the doc happy =)



--
73's Pat  N5VMO


Re: QCX Mobile with New Amp

George Korper
 

I'm  laughing at the error in my email.
Should I be thankful this Phone thinks for me as I am all thumbs.? Maybe if I speak in the future I will be more precise. Unless Google has  problems with my talking with my dentures in. Old, imprecise and inaccurate.  The Hat Trick.

On Sun, Dec 22, 2019, 9:06 AM Roger Hill <rhill@...> wrote:
Just to be precise ... I am old and like things to be 'right'...

Peddle == to sell stuff, possibly from a push bike.

Pedal == to rotate the bike's pedals with your legs and feet.

73
Roger
G3YTN

On 22 Dec 2019, at 11:00, George Korper <georgekorper@...> wrote:
For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42= ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: QCX Mobile with New Amp

Roger Hill
 

No prob. Not picking on you!

Roger

On 22 Dec 2019, at 11:33, George Korper <georgekorper@...> wrote:
Thank you for editing. I should  know better at 74.

On Sun, Dec 22, 2019, 9:00 AM George Korper via Groups.Io <georgekorper=gmail.com@groups.io> wrote:
For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42=ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: QCX Mobile with New Amp

George Korper
 

Thank you for editing. I should  know better at 74.


On Sun, Dec 22, 2019, 9:00 AM George Korper via Groups.Io <georgekorper=gmail.com@groups.io> wrote:
For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42=ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: QCX Mobile with New Amp

N5VMO Pat
 

  George Korper ..... I have do the same thing with a old junk yard mt bike and a trainer that I converted .... the key is the lead shot in the back tire for rotation stability while peddling the bike =)   All those gears help with the different riders and a bike training video to watch helps if you are inside for inspiration in thinking the rider is getting somewhere =)    Also it is a cardio workout to make the doc happy =)



--
73's Pat  N5VMO


Re: QCX Mobile with New Amp

Roger Hill
 

Just to be precise ... I am old and like things to be 'right'...

Peddle == to sell stuff, possibly from a push bike.

Pedal == to rotate the bike's pedals with your legs and feet.

73
Roger
G3YTN

On 22 Dec 2019, at 11:00, George Korper <georgekorper@...> wrote:
For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42= ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: QCX Mobile with New Amp

George Korper
 

For the last several years I have made and sold a 40 watt stationary bike for exercise and emergency power.
I have the complete plans if you would like them. I average 1 and 1/4 hrs a day and it keeps my 8 hr.LI ion charged, it
generates more than enough power for radios, and cell phones. Of course I have an off grid solar setup to supplement the bike.
Since  my bike is stationary I don't anticipate legal problems. It is easy to QSO from the bike as I peddle. I have not sold many to hams, mainly Preppers. I tried selling to Hams and submitted an article to QST that was rejected. There are exceptions but the number of hams that 
want to peddle are few. I can send you the article that was rejected by QST if you like. Kids like to generate power for a few minutes, but frankly the bikes are not made properly and try to make too many watts. The average adult can generate about 25 watts for the hours necessary to keep a station running over the long hours that are necessary in an emergency. Much more in Mexico where I live and the people are accustomed to long strenuous hour of work. If you peddle with legs and then trade off using the upper arms, even my military version takes practice and good conditioning for long duration. 

On Sun, Dec 22, 2019 at 11:21 AM KEN G4APB via Groups.Io <lfoofui.nbz42=ntlworld.com@groups.io> wrote:
When visiting the flying doctor museum in VKland, I saw how hard the outback kids had to peddle their bicycle generators to power their ‘school on the air’, valve transceivers. You are gonna need a long downhill run and some frantic peddling to power your 50Watt QRO rig (as you haven’t mentioned the 100Whr 24v lorry battery you could need otherwise). Will you be also using 30wpm+ to achieve the qso in time?? What an operator you must be!!!  hi hi.

vy 73 de ken g4apb 

Re: Panel Mount interface for QCX GPS port for connection to QLG1

 

I'm not able to see my enclosures but from the photos on the website it looks like it could be for a DB9F DSUB connector. 

https://www.mouser.com/ProductDetail/Amphenol-Commercial-Products/L177DFE09ST?qs=sGAEpiMZZMuKcrGJUvEKSdTmuolcy3aszzT46tLQa0c%3D
--
73
NE5U

Mike

Re: QRP Lbs

Hans Summers
 

Hi Albert

NO holidays here... I did get your message but it was already Friday evening when it arrived. The emails tend to stack up a bit at weekends... will get to it probably tomorrow morning. 

73 Hans G0UPL

On Sun, Dec 22, 2019 at 4:06 PM <g4oge@...> wrote:
HI, Does anyone know if QRP Labs are on holiday for Christmas?, I have e-mailed them asking for the supply of a couple of Microprocessors for the 40-meter rigs and some C! Variable capacitors, or who to ask thanks. Albert

QRP Lbs

Albert Rowe
 

HI, Does anyone know if QRP Labs are on holiday for Christmas?, I have e-mailed them asking for the supply of a couple of Microprocessors for the 40-meter rigs and some C! Variable capacitors, or who to ask thanks. Albert