Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Charles MacDonald]

On 12-10-04 04:31 AM, Nick wrote:


...or you could just use Frank's pages, which are wonderful, and free!


I often use those also.  The Data from the TCA is actually a scan of the 
entire registration file from the RMA, RTMA, EIA, JEDEC and a few other 
names that the used over the years. each file Generally has the Official 
Data sheet, and sometime back and forth between the various makers as 
they wanted to change the specs to conform to what they actually 
produced.  It also included the same information of the 1nxxx and 2Nxxx 
semiconductors.


The TCA folks did a nice index which lets you see when the "release" 
went out as a mailing to the rest of the industry.  This is sometimes 
not the date that the tube was actually first available as the makers 
would try to get a "Socket Win" from Receiver makers in advance of 
letting their competitors what they were planing to come out with.




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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Adam Jacobs]

Probably not as vulnerable as single sideband. :S

Are you sure that it is the multiplexed nixies and not the switching 
supply? I'm just curious at this point, I've always assumed that the 
rapid ionization/de-ionization of the neon would create some RF noise, 
but no real idea. When I built my WWVB nixie clock, I shut down the HV 
supply (and then also by definition the nixies) while listening for 
timesync.


-Adam W7QI

On 10/4/2012 1:31 AM, Nick wrote:


Back on topic slightly, I've found that multiplexed nixie clocks 
interfere terribly with old valve AM radios, partly because the radios 
have poor selectivity, but also due to the wide spectrum of near-field 
interference that poorly screened uP projects emit... AM is of course 
extremely vulnerable to this type of interference.

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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Charles MacDonald]

On 12-10-03 07:06 PM, Adam Jacobs wrote:

Somehow I missed the part where they're full power on the 6m band and
partial power on 2m. Sounds like some nice finals to me.


My handy reference on tubes is from the tube collectors association (one 
of the best 50 bucks spent on information) and includes the "Original" 
data on most types, sometimes there is changes on later versions.



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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Adam Jacobs]

Somehow I missed the part where they're full power on the 6m band and 
partial power on 2m. Sounds like some nice finals to me.


-Adam W7QI

On 10/3/2012 4:05 PM, Adam Jacobs wrote:
WOW! Who's complaining? Build yourself a nice little CW transceiver or 
linear amplifier.

Those old power pentodes are getting scarce. :(

-Adam

On 10/3/2012 1:50 PM, Charles MacDonald wrote:

On 12-10-03 11:30 AM, jb-electronics wrote:


About 10 years ago I bough two NIB 7094s for about USD 5 !

Unfortunately, they were RCA 7094s -  RF power output pentodes!


Released by RCA Jan 20, 1958 Heater 3.2 amps (later 2.85) at 6.3 
Volts. DC plate volts 1500 Continuous service, 2000 intermittent 
service. Plate dissipation 100 or 125 Max Watts.


"High power Gain, ... in fixed and Mobile equipment as as an RF power 
amplifier and oscillator as  well as an AF power Amplifier and 
modulator..  Full power at 60Mhz and reduced input up to 175Mhz."


Stands five inches high from pins to Plate connection, and 2.56" 
maximum diameter. Jumbo 7 pin base with Pin 4 larger than the rest.


Yes, that is a bit different from an IC or a Nixie tube






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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Adam Jacobs]

WOW! Who's complaining? Build yourself a nice little CW transceiver or 
linear amplifier.

Those old power pentodes are getting scarce. :(

-Adam

On 10/3/2012 1:50 PM, Charles MacDonald wrote:

On 12-10-03 11:30 AM, jb-electronics wrote:


About 10 years ago I bough two NIB 7094s for about USD 5 !

Unfortunately, they were RCA 7094s -  RF power output pentodes!


Released by RCA Jan 20, 1958 Heater 3.2 amps (later 2.85) at 6.3 
Volts. DC plate volts 1500 Continuous service, 2000 intermittent 
service. Plate dissipation 100 or 125 Max Watts.


"High power Gain, ... in fixed and Mobile equipment as as an RF power 
amplifier and oscillator as  well as an AF power Amplifier and 
modulator..  Full power at 60Mhz and reduced input up to 175Mhz."


Stands five inches high from pins to Plate connection, and 2.56" 
maximum diameter. Jumbo 7 pin base with Pin 4 larger than the rest.


Yes, that is a bit different from an IC or a Nixie tube




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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Charles MacDonald]

On 12-10-03 11:30 AM, jb-electronics wrote:


About 10 years ago I bough two NIB 7094s for about USD 5 !

Unfortunately, they were RCA 7094s -  RF power output pentodes!


Released by RCA Jan 20, 1958 Heater 3.2 amps (later 2.85) at 6.3 Volts. 
DC plate volts 1500 Continuous service, 2000 intermittent service. 
Plate dissipation 100 or 125 Max Watts.


"High power Gain, ... in fixed and Mobile equipment as as an RF power 
amplifier and oscillator as  well as an AF power Amplifier and 
modulator..  Full power at 60Mhz and reduced input up to 175Mhz."


Stands five inches high from pins to Plate connection, and 2.56" maximum 
diameter. Jumbo 7 pin base with Pin 4 larger than the rest.


Yes, that is a bit different from an IC or a Nixie tube


--
Charles MacDonald Stittsville Ontario
cm...@zeusprune.ca  Just Beyond the Fringe
http://users.trytel.com/~cmacd/tubes.html
No Microsoft Products were used in sending this e-mail.

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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[jb-electronics]

Happened to me, too! But I made sure to have the seller send me a 
picture beforehand and so I did not purchase it in the end.


Jens


On Wednesday, 3 October 2012 10:38:35 UTC+1, Jens Boos wrote:

I wouldn't say they are totally useless. Mostly, yes. But
sometimes you can achieve nice results. Recently I got a new in
box NL-7094 via one of those brokers. But that is after emailing
hundreds of suppliers... ;-)


About 10 years ago I bough two NIB 7094s for about USD 5 !

Unfortunately, they were RCA 7094s -  RF power output pentodes!

The upside was they are actually very valuable too, so whilst I don't 
do power RF stuff much, the tubes are worth perhaps USD 100 each now 
and are still in big demand.


Got me interested in RF design though
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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[Nick]

On Wednesday, 3 October 2012 10:38:35 UTC+1, Jens Boos wrote:

>  I wouldn't say they are totally useless. Mostly, yes. But sometimes you 
> can achieve nice results. Recently I got a new in box NL-7094 via one of 
> those brokers. But that is after emailing hundreds of suppliers... ;-)
>

About 10 years ago I bough two NIB 7094s for about USD 5 !

Unfortunately, they were RCA 7094s -  RF power output pentodes!

The upside was they are actually very valuable too, so whilst I don't do 
power RF stuff much, the tubes are worth perhaps USD 100 each now and are 
still in big demand.

Got me interested in RF design though

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Re: [neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[jb-electronics]

I wouldn't say they are totally useless. Mostly, yes. But sometimes you 
can achieve nice results. Recently I got a new in box NL-7094 via one of 
those brokers. But that is after emailing hundreds of suppliers... ;-)


Jens


Have you actually tried this one ? There are tons of so called part 
brokers on the web. Most are useless, even if you're a manufacturer. 
For hobbyist they're especially useless.


I thought I had some, but they ended being UHP408 chips. The prefix 
does suggest Sprague. Have you tried Allegro ? That's the name they 
last operated under.


On Tuesday, October 2, 2012 5:33:06 AM UTC-7, glasslinger wrote:

Hello!

try www.ctg123.com/rapid-quote-system/request/?p=
*UHP480.

*

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[neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[threeneurons]

Have you actually tried this one ? There are tons of so called part brokers 
on the web. Most are useless, even if you're a manufacturer. For hobbyist 
they're especially useless. 

I thought I had some, but they ended being UHP408 chips. The prefix does 
suggest Sprague. Have you tried Allegro ? That's the name they last 
operated under.

On Tuesday, October 2, 2012 5:33:06 AM UTC-7, glasslinger wrote:
>
> Hello!
>
> try www.ctg123.com/rapid-quote-system/request/?p=*UHP480. 
>
> *

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[neonixie-l] Re: (OT) Ics needed..(they drive the orange glow...)

[glasslinger]

Hello!

try www.ctg123.com/rapid-quote-system/request/?p=*UHP480. 

*

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