In a message dated 11/20/02 3:19:59 PM GMT Standard Time, Kplblange@....... 
writes:


> 
>     Tell me, is there the feature where tick marks are put ever minute or 
> so? 
> Also, what about ink supply? You mention the pens.  As for the assembly, no 
> 
> problem.
>     Do you have an idea about shipping costs? I do not see that as a factor 
> 
> and I almost surely want to buy one of them.
> 
> Ken in Gardena, CA

Hi Ken,

You will have to generate your own tick marks. I did this on a "Geotech" drum 
I converted to pen and ink. I used an ordinary quartz kitchen clock. I glued 
a little piece of aluminum foil on the second hand and mounted an infra red 
diode and a photo transistor side by side on the face of the clock. Once each 
minute the second hand reflector jumped under these for exactly one second 
and reflected the infrared into the phototransistor to generate a current 
that closed a relay mechanically connected to the pen so it lifted the pen 
off the paper putting a 1-second gap in the trace every minute. The pen was 
the tip assembly of a "Rapidograph" drawing pen that held enough ink to last 
24 hours which was how often the paper recording had to be changed. Each 
morning I checked the clock error against WWV and marked it on the starting 
edge of the recording. The error was pretty consistent at loosing about four 
tenths of a second/day. This was back in ~1990 and I was able to time the 
first impulse usually to with a few tenths of a second for USGS as station 
TXNY in Tuxedo, NY. 

I will ship it by "Yellow Freight" because I can take the crate to their main 
terminal which is nearby and save some $$s. The weight is marked on the crate 
as 192 pounds which I would guess might cost somewhere in the neighborhood of 
200-300 dollars from New jersey to California. If you will give me your zip 
code I'll get an exact price.

Regards,
Cap
(Casper Hossfield.....New Jersey)
-------------------------------------------------------------------      
Original Message:

Cap, so good to hear from you on the drum record.  Sounds as if that is 
just what I want. I confess I know little about the drum recorders.  I have 
only seen them from a distance. Saw one at San Juan Batista near the mission 
and almost sitting on the San Andreas Fault!  Have seen them working at 
Griffith Observatory, too. 
    Tell me, is there the feature where tick marks are put ever minute or so? 

Also, what about ink supply? You mention the pens.  As for the assembly, no 
problem.
    Do you have an idea about shipping costs? I do not see that as a factor 
and I almost surely want to buy one of them.

Ken in Gardena, CA
__________________________________________________________
In a message dated 11/20/02 3:19:59 PM GMT Standard Time, Kplblange@....... writes:







    Tell me, is there the feature where tick marks are put ever minute or so? 

Also, what about ink supply? You mention the pens.  As for the assembly, no 

problem.

    Do you have an idea about shipping costs? I do not see that as a factor 

and I almost surely want to buy one of them.



Ken in Gardena, CA




Hi Ken,



You will have to generate your own tick marks. I did this on a "Geotech" drum I converted to pen and ink. I used an ordinary quartz kitchen clock. I glued a little piece of aluminum foil on the second hand and mounted an infra red diode and a photo transistor side by side on the face of the clock. Once each minute the second hand reflector jumped under these for exactly one second and reflected the infrared into the phototransistor to generate a current that closed a relay mechanically connected to the pen so it lifted the pen off the paper putting a 1-second gap in the trace every minute. The pen was the tip assembly of a "Rapidograph" drawing pen that held enough ink to last 24 hours which was how often the paper recording had to be changed. Each morning I checked the clock error against WWV and marked it on the starting edge of the recording. The error was pretty consistent at loosing about four tenths of a second/day. This was back in ~1990 and I was able to time the first impulse usually to with a few t
enths of a second for USGS as station TXNY in Tuxedo, NY. 



I will ship it by "Yellow Freight" because I can take the crate to their main terminal which is nearby and save some $$s. The weight is marked on the crate as 192 pounds which I would guess might cost somewhere in the neighborhood of 200-300 dollars from New jersey to California. If you will give me your zip code I'll get an exact price.



Regards,

Cap

(Casper Hossfield.....New Jersey)

-------------------------------------------------------------------      

Original Message:



Cap, so good to hear from you on the drum record.  Sounds as if that is 

just what I want. I confess I know little about the drum recorders.  I have 

only seen them from a distance. Saw one at San Juan Batista near the mission 

and almost sitting on the San Andreas Fault!  Have seen them working at 

Griffith Observatory, too. 

    Tell me, is there the feature where tick marks are put ever minute or so? 

Also, what about ink supply? You mention the pens.  As for the assembly, no 

problem.

    Do you have an idea about shipping costs? I do not see that as a factor 

and I almost surely want to buy one of them.



Ken in Gardena, CA

__________________________________________________________