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Thursday, August 21, 2008

6AU6A Pentode













6AU6 Application Data

Class Va Vg2 Ia Ig2 Ra S Rk
Pentode 100 100 5.0 2.1 500,000 3.9 150
Pentode 250 125 7.6 3.0 1,500,000 4.5 100
Pentode 250 150 10.6 4.3 1,000,000 5.2 68
Triode connected 250
12.2
7,500 4.8 330


Vh Ih VaMax Vg2Max VhkMax PaMax Pg2Max Cgk Cak Cga Notes
6.3 0.3 350 330 200 3.5 0.75 5.5 5.0 0.0035 Pg2 = 0.75W for Vg2 <>


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6AN8A Triode Pentode

















This is an original RCA 6AN8A Medium-Mu Triode Sharp-Cutoff Pentode Electronic Tube. A collector's special vacuum tube. This tube useable in VHF television and FM receivers. Naturally a Medium-Mu triode can be used for many other special purpose circuits like oscillators and RF amplifiers. Excellent for those antique radio or television restoration projects or to set up a private vacuum tube museum. It is NOS tube - New Old Stock, unused, boxed, and kept for all these years in mint condition.

Features:

6AN8A Radiotron Electron Tube
• Mfg: RCA
• Class A amplifier
• Heater: 6.3 V, 0.3 A
• Plate: 125/150 Vmax - Triode/Pentode
• Plate Current: 12.5/15 mAmax - Triode/Pentode
• Base: 9-pin miniature, all glass
• High quality Made in USA
• Tube Collector's Special
• This tube come out of a old but working Tektronic oscilloscope

Notes:


• Only two available
• Price: $30 a pairs
• Add $6 for S/H within continental US

Please send email me at : tubescrazy@yahoo.com

Thursday, August 7, 2008

Build your own HD antenna




Few months ago Time Wagner cable company had raised the price on my cable bill from $30 to $60 a month and I tried to reasonable with them but no luck the price stay and there is nothing I can do so I cancel my service. Time like this $60 a month is a lot of money for my family. But I need the basic TV channels for the family. Searching on the internet I found out there are quite number of people making their own I antenna. I stumble across the hanger antenna on metacafe.
Follow the instruction I build my hanger antenna, I am so amazing with the hanger antenna I got 46 digital channels and most of the channels are super clear. But I am not happy with the look of the antenna so I started to create a better version of the hanger antenna. I found some copper tape at my work cut about six 12'' x 1' , spent only one hour on saturday morning I made my HD antenna with this antenna I got 60 digital channels with super picure quality. I am so happy I can watch digital channels for free.
Here are some pictures of the HD antenna. Any question please feel free to email me at : allpixles63@yahoo.com.


Coat hanger antenna with this I got 46 digital channels
hanger 2

hanger 1


Copper tape antenna on card board with this I got 60 digital channels
Copper 1

copper 2


And here are the two antenna
hanger and copper

hanger and copper 2

Update After moved down to Westminster re-scan my TV I got up to 103 channels wow!
As promise I have the complete drawing of HD antenna here for anyone want to DIY enjoy. Thanks for stop by my blog.

Chinh Le.