RE: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-26 Thread Gary Schafer


 Gary:  The guy that marketed that 40 db power pad was actually a rep,
 a real character.  I still have the data sheet and picture somewhere
 here in my library.  He used to tell me his real money came from
 making and selling waders.
 
 BTW I do have the schematic and JPEG of the Cushman 40 db pad with
 the fuse inside.  Should I send it to someone?
 
 Ciao, Tony, K3WX
 
  73
  Gary  K4FMX

Hi Tony,

That was Don Simons. I think that he is still a rep but last I heard from
him he was in Loveland, Co.
He even left the rep business for a few years selling his waders. :)

73
Gary  K4FMX



RE: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-26 Thread Gary Schafer

The idea of the dual meter unit was to be able to quickly go thru a circuit
without having to touch the meter to change ranges or change to AC or DC. If
you stuck it on a DC circuit it would read that right. If you stuck it on an
AC circuit it would read that.
Also you could read an AC voltage riding on top of a DC voltage. One meter
would display the DC and the other the AC value.
Kind of handy sometimes.
I may have a catalog sheet of it somewhere around here but I haven't run
across it in some time,

Yes the mod box was ok but didn't sell to well. 

The other item I assume that you meant lineman. That was a very slick box
and sold well. It was a line level meter with tone generator and audio
amp/speaker and mike. It had the commonly used tone remote tones built in so
you could check the line level at those frequencies.
 Usually people bought two of them, one to use on each end of a line being
tested. You could talk back and forth to the guy on the other end and send
each other tones and measure levels each way.

73
Gary  K4FMX

  There were very few combination analog/DVM's at service instrument
 prices and the DMM's that had bar graphs didn't have the resoloution for
 trends at the time. I can only think of a few off hand such as the
 Keithly,Simpson had an early one in a 260 type case with
 Nixies,Ballentine $, and Fluke . I think Heath had one for a
 short time too. I'd love to see a picture of this meter. I'm still
 trying to grasp what was so special about two separate meters for AC and
 DC. There had to be some of Bill's magic either comparator presets,
 audible alarm or some neat thing that would make service easier.
 
 While the subject is odd Helper stuff, remember the Mod Box or the
 Sineman?
 




[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-26 Thread Dawn
No Gary. I meant Sineman. I'm fully aware of the lineman. That was a bit 
overpriced for what it did. We had two Nortel units that we bought ex-telco 
that did the same thing elegantly.

The Sineman was a unit that we received a mailed brochure. I'm looking at it 
now. The description:  Microprocessor controlled test set features: AC 
voltmeter,Sineadder,Line Level meter,Single and DTMF tone decoding and portable 
battery operation $550 for a short time.

The drawing of the unit shows a square box with a large meter and 16 digit 
keypad on the right. Bridge and terminate switch. 4 controls labeled Mode, 
Scale,Vol., Level. This doesn't have the typical appearance of Helper 
products. It looks like a keypad entry version of the Toner 3,Lineman,Sinadder 
3 with DTMF decode added. This arrived after Susan took control of the company. 
I can scan this and upload it if anyone is interested. 

--- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote:

 
 The idea of the dual meter unit was to be able to quickly go thru a circuit
 without having to touch the meter to change ranges or change to AC or DC. If
 you stuck it on a DC circuit it would read that right. If you stuck it on an
 AC circuit it would read that.
 Also you could read an AC voltage riding on top of a DC voltage. One meter
 would display the DC and the other the AC value.
 Kind of handy sometimes.
 I may have a catalog sheet of it somewhere around here but I haven't run
 across it in some time,
 
 Yes the mod box was ok but didn't sell to well. 
 
 The other item I assume that you meant lineman. That was a very slick box
 and sold well. It was a line level meter with tone generator and audio
 amp/speaker and mike. It had the commonly used tone remote tones built in so
 you could check the line level at those frequencies.
  Usually people bought two of them, one to use on each end of a line being
 tested. You could talk back and forth to the guy on the other end and send
 each other tones and measure levels each way.
 
 73
 Gary  K4FMX
 
   There were very few combination analog/DVM's at service instrument
  prices and the DMM's that had bar graphs didn't have the resoloution for
  trends at the time. I can only think of a few off hand such as the
  Keithly,Simpson had an early one in a 260 type case with
  Nixies,Ballentine $, and Fluke . I think Heath had one for a
  short time too. I'd love to see a picture of this meter. I'm still
  trying to grasp what was so special about two separate meters for AC and
  DC. There had to be some of Bill's magic either comparator presets,
  audible alarm or some neat thing that would make service easier.
  
  While the subject is odd Helper stuff, remember the Mod Box or the
  Sineman?
 





RE: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-26 Thread Gary Schafer
Ok, I never saw that one. That was after my time with them.

There was another small company in Indiana that was started by a couple of
ex wavetek guys that build a line test box too. It would fully simulate DC
and tone remotes, measure line levels etc. Was a pretty nice box but pricey.
I can't remember the name of it now.

73
Gary  K4FMX

 -Original Message-
 From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
 buil...@yahoogroups.com] On Behalf Of Dawn
 Sent: Friday, March 26, 2010 4:29 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)
 
 No Gary. I meant Sineman. I'm fully aware of the lineman. That was a bit
 overpriced for what it did. We had two Nortel units that we bought ex-
 telco that did the same thing elegantly.
 
 The Sineman was a unit that we received a mailed brochure. I'm looking
 at it now. The description:  Microprocessor controlled test set
 features: AC voltmeter,Sineadder,Line Level meter,Single and DTMF tone
 decoding and portable battery operation $550 for a short time.
 
 The drawing of the unit shows a square box with a large meter and 16
 digit keypad on the right. Bridge and terminate switch. 4 controls
 labeled Mode, Scale,Vol., Level. This doesn't have the typical
 appearance of Helper products. It looks like a keypad entry version of
 the Toner 3,Lineman,Sinadder 3 with DTMF decode added. This arrived
 after Susan took control of the company. I can scan this and upload it
 if anyone is interested.
 
 --- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@...
 wrote:
 
 
  The idea of the dual meter unit was to be able to quickly go thru a
 circuit
  without having to touch the meter to change ranges or change to AC or
 DC. If
  you stuck it on a DC circuit it would read that right. If you stuck it
 on an
  AC circuit it would read that.
  Also you could read an AC voltage riding on top of a DC voltage. One
 meter
  would display the DC and the other the AC value.
  Kind of handy sometimes.
  I may have a catalog sheet of it somewhere around here but I haven't
 run
  across it in some time,
 
  Yes the mod box was ok but didn't sell to well.
 
  The other item I assume that you meant lineman. That was a very
 slick box
  and sold well. It was a line level meter with tone generator and audio
  amp/speaker and mike. It had the commonly used tone remote tones built
 in so
  you could check the line level at those frequencies.
   Usually people bought two of them, one to use on each end of a line
 being
  tested. You could talk back and forth to the guy on the other end and
 send
  each other tones and measure levels each way.
 
  73
  Gary  K4FMX
 
There were very few combination analog/DVM's at service instrument
   prices and the DMM's that had bar graphs didn't have the resoloution
 for
   trends at the time. I can only think of a few off hand such as the
   Keithly,Simpson had an early one in a 260 type case with
   Nixies,Ballentine $, and Fluke . I think Heath had one for a
   short time too. I'd love to see a picture of this meter. I'm still
   trying to grasp what was so special about two separate meters for AC
 and
   DC. There had to be some of Bill's magic either comparator presets,
   audible alarm or some neat thing that would make service easier.
  
   While the subject is odd Helper stuff, remember the Mod Box or the
   Sineman?
  
 
 
 
 
 
 
 
 
 
 Yahoo! Groups Links
 
 
 



[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-26 Thread darylynn d
I think one was called the Lineman? and another the Toner? I added some dtmf 
and burst tones to my Sinadder 3 with aftermarket stuff from CES and others.

--- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote:

 Ok, I never saw that one. That was after my time with them.
 
 There was another small company in Indiana that was started by a couple of
 ex wavetek guys that build a line test box too. It would fully simulate DC
 and tone remotes, measure line levels etc. Was a pretty nice box but pricey.
 I can't remember the name of it now.
 
 73
 Gary  K4FMX
 
  -Original Message-
  From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
  buil...@yahoogroups.com] On Behalf Of Dawn
  Sent: Friday, March 26, 2010 4:29 PM
  To: Repeater-Builder@yahoogroups.com
  Subject: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)
  
  No Gary. I meant Sineman. I'm fully aware of the lineman. That was a bit
  overpriced for what it did. We had two Nortel units that we bought ex-
  telco that did the same thing elegantly.
  
  The Sineman was a unit that we received a mailed brochure. I'm looking
  at it now. The description:  Microprocessor controlled test set
  features: AC voltmeter,Sineadder,Line Level meter,Single and DTMF tone
  decoding and portable battery operation $550 for a short time.
  
  The drawing of the unit shows a square box with a large meter and 16
  digit keypad on the right. Bridge and terminate switch. 4 controls
  labeled Mode, Scale,Vol., Level. This doesn't have the typical
  appearance of Helper products. It looks like a keypad entry version of
  the Toner 3,Lineman,Sinadder 3 with DTMF decode added. This arrived
  after Susan took control of the company. I can scan this and upload it
  if anyone is interested.
  
  --- In Repeater-Builder@yahoogroups.com, Gary Schafer gaschafer@
  wrote:
  
  
   The idea of the dual meter unit was to be able to quickly go thru a
  circuit
   without having to touch the meter to change ranges or change to AC or
  DC. If
   you stuck it on a DC circuit it would read that right. If you stuck it
  on an
   AC circuit it would read that.
   Also you could read an AC voltage riding on top of a DC voltage. One
  meter
   would display the DC and the other the AC value.
   Kind of handy sometimes.
   I may have a catalog sheet of it somewhere around here but I haven't
  run
   across it in some time,
  
   Yes the mod box was ok but didn't sell to well.
  
   The other item I assume that you meant lineman. That was a very
  slick box
   and sold well. It was a line level meter with tone generator and audio
   amp/speaker and mike. It had the commonly used tone remote tones built
  in so
   you could check the line level at those frequencies.
Usually people bought two of them, one to use on each end of a line
  being
   tested. You could talk back and forth to the guy on the other end and
  send
   each other tones and measure levels each way.
  
   73
   Gary  K4FMX
  
 There were very few combination analog/DVM's at service instrument
prices and the DMM's that had bar graphs didn't have the resoloution
  for
trends at the time. I can only think of a few off hand such as the
Keithly,Simpson had an early one in a 260 type case with
Nixies,Ballentine $, and Fluke . I think Heath had one for a
short time too. I'd love to see a picture of this meter. I'm still
trying to grasp what was so special about two separate meters for AC
  and
DC. There had to be some of Bill's magic either comparator presets,
audible alarm or some neat thing that would make service easier.
   
While the subject is odd Helper stuff, remember the Mod Box or the
Sineman?
   
  
  
  
  
  
  
  
  
  
  Yahoo! Groups Links
  
  
 





[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-25 Thread skipp025

 While the subject is odd Helper stuff, remember the 
 Mod Box or the Sineman? 

I'm a late comer to picking up extra Helper Instrument Equipment 
but I now have a modest collection of a few items like the Sineadder 
and a few of the antenna match boxes. I hadn't thought about it 
for a while but I even have a Mod Box somewhere.  It's not nearly 
as useful as some of their other products still are, but it's at 
least neat to try and read the manual. 

I have a Helper Instruments Catalog (one of their last) in my 
collection (somewhere). I expect my digital scanner to be back on
line later this month and I'll be able to make pdf copies available 
free to any and all parties. 

cheers,
s. 



Re: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-25 Thread Tony Faiola

On Mar 24, 2010, at 11:06 PM, Gary Schafer wrote:

 Yes he did build some for a few years. They were never a big seller  
 as the
 price was pretty high. They did work pretty well. It did not have a  
 digital
 display, only analog meters. There were lights that showed what  
 range it was
 on. You could read AC on one meter and DC on the other. Handy for some
 things.

 I kind of remember him playing around with an attenuator pad to go  
 ahead of
 a service monitor. I don't remember the wattmeter part though.

 There was a guy in California making a 40 db power pad to use ahead  
 of a
 service monitor. It was made during the Singer monitor era to go in  
 front of
 it. It had a port for the transceiver and one for the signal  
 generator and
 another for the receive input on the monitor. It worked pretty  
 well. There
 may be a few floating around yet.

Gary:  The guy that marketed that 40 db power pad was actually a rep,  
a real character.  I still have the data sheet and picture somewhere  
here in my library.  He used to tell me his real money came from  
making and selling waders.

BTW I do have the schematic and JPEG of the Cushman 40 db pad with  
the fuse inside.  Should I send it to someone?

Ciao, Tony, K3WX

 73
 Gary  K4FMX


 While we're at it, what ever happened to the watt meter that fed a  
 power
 pad like a termaline with an attenuated output? Was that talk, or did
 they ever do anything with that?







[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-25 Thread Dawn
The Mod Box was a great idea during it's time. Only the IFR-1000 at the time 
had the provision to use a microphone with a pre-emhasis network. Most all the 
service monitors only allowed an internal tone or external audio gen. Some 
allowed the mix of both. The Mod box was sort of like a microphone and two 
source tone mixer. 

The Power pad was neat b/c unlike an isotee or throughline power attenuator, 
you could combine both ends of a service monitor, especially one with 
duplex/offset generation to a device at the same time. Leave it attached 
permanantly and take into account the attenuation and never worry about 
accidently frying it.

We bought a couple of the Com-Ser (Neo-Lampkin) units. Still have one. These 
were single port devices based on a thick film hybrid in a big heatsink. They 
made some neat add-on stuff too. They had a banded, two way 
amplifier/preselector that raised the flea power output of some of the earlier 
monitors to +dbm levels, preslected the input and output for clean output and 
microvolt sensitivity of the monitor for OTA monitoring. Moot point with later 
monitors of the 80's.  

--- In Repeater-Builder@yahoogroups.com, Tony Faiola fai...@... wrote:

 
 On Mar 24, 2010, at 11:06 PM, Gary Schafer wrote:
 
  Yes he did build some for a few years. They were never a big seller  
  as the
  price was pretty high. They did work pretty well. It did not have a  
  digital
  display, only analog meters. There were lights that showed what  
  range it was
  on. You could read AC on one meter and DC on the other. Handy for some
  things.
 
  I kind of remember him playing around with an attenuator pad to go  
  ahead of
  a service monitor. I don't remember the wattmeter part though.
 
  There was a guy in California making a 40 db power pad to use ahead  
  of a
  service monitor. It was made during the Singer monitor era to go in  
  front of
  it. It had a port for the transceiver and one for the signal  
  generator and
  another for the receive input on the monitor. It worked pretty  
  well. There
  may be a few floating around yet.
 
 Gary:  The guy that marketed that 40 db power pad was actually a rep,  
 a real character.  I still have the data sheet and picture somewhere  
 here in my library.  He used to tell me his real money came from  
 making and selling waders.
 
 BTW I do have the schematic and JPEG of the Cushman 40 db pad with  
 the fuse inside.  Should I send it to someone?
 
 Ciao, Tony, K3WX
 
  73
  Gary  K4FMX
 
 
  While we're at it, what ever happened to the watt meter that fed a  
  power
  pad like a termaline with an attenuated output? Was that talk, or did
  they ever do anything with that?
 
 
 
 





[Repeater-Builder] RE: Helper Instruments (Voltadder VA 502)

2010-03-24 Thread Gary Schafer
That was an auto ranging voltmeter. They were rather expensive at the time,
compared to nowadays. As I remember it you could select auto range, or lock
it in a particular range.

73
Gary  K4FMX

 -Original Message-
 From: Alicia Mehrdad [mailto:abcza...@gmail.com]
 Sent: Wednesday, March 24, 2010 3:26 PM
 To: gascha...@comcast.net; skipp...@yahoo.com; Repeater-
 buil...@yahoogroups.com
 Subject: Helper Instruments (Voltadder VA 502)
 
 Hello gentlemen, I found your e-mails on line and  I was wondering if
 you could help me figure out what type of equipment is this, I have a
 Voltadder Part No. VA 502 from Helper Instruments, it has two windows
 with a needle meter type and in between the windows it has some lights
 and number going down.  please see example below.
 
 -DC + Volts db AC,
 500+ 50
 150+ 40
 50  +30
 15  +20
  5   +10
 1.5  0 db
 .5-10
 .15  -20
 
 .  Your help would be greatly appreciated.  thank you.



[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-24 Thread Dawn
Whoa!
Bill actually went through with this? I never seen this as a production item 
although the idea of a service bench Analog/Digital voltmeter was something he 
was interested in doing. The DMM's A/D section was to go to an integrator and 
drive a meter for peaking or nulling. My understanding was this was going to be 
a service grade instrument with a 3 1/2 autoranging digit DMM basic. Was this a 
protoype? Are there any pics? 

While we're at it, what ever happened to the watt meter that fed a power pad 
like a termaline with an attenuated output? Was that talk, or did they ever do 
anything with that?

--- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote:

 That was an auto ranging voltmeter. They were rather expensive at the time,
 compared to nowadays. As I remember it you could select auto range, or lock
 it in a particular range.
 
 73
 Gary  K4FMX
 
  -Original Message-
  From: Alicia Mehrdad [mailto:abcza...@...]
  Sent: Wednesday, March 24, 2010 3:26 PM
  To: gascha...@...; skipp...@...; Repeater-
  buil...@yahoogroups.com
  Subject: Helper Instruments (Voltadder VA 502)
  
  Hello gentlemen, I found your e-mails on line and  I was wondering if
  you could help me figure out what type of equipment is this, I have a
  Voltadder Part No. VA 502 from Helper Instruments, it has two windows
  with a needle meter type and in between the windows it has some lights
  and number going down.  please see example below.
  
  -DC + Volts db AC,
  500+ 50
  150+ 40
  50  +30
  15  +20
   5   +10
  1.5  0 db
  .5-10
  .15  -20
  
  .  Your help would be greatly appreciated.  thank you.





RE: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-24 Thread Gary Schafer
Yes he did build some for a few years. They were never a big seller as the
price was pretty high. They did work pretty well. It did not have a digital
display, only analog meters. There were lights that showed what range it was
on. You could read AC on one meter and DC on the other. Handy for some
things.

I kind of remember him playing around with an attenuator pad to go ahead of
a service monitor. I don't remember the wattmeter part though.

There was a guy in California making a 40 db power pad to use ahead of a
service monitor. It was made during the Singer monitor era to go in front of
it. It had a port for the transceiver and one for the signal generator and
another for the receive input on the monitor. It worked pretty well. There
may be a few floating around yet.

73
Gary  K4FMX

 -Original Message-
 From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
 buil...@yahoogroups.com] On Behalf Of Dawn
 Sent: Wednesday, March 24, 2010 4:37 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)
 
 Whoa!
 Bill actually went through with this? I never seen this as a production
 item although the idea of a service bench Analog/Digital voltmeter was
 something he was interested in doing. The DMM's A/D section was to go to
 an integrator and drive a meter for peaking or nulling. My understanding
 was this was going to be a service grade instrument with a 3 1/2
 autoranging digit DMM basic. Was this a protoype? Are there any pics?
 
 While we're at it, what ever happened to the watt meter that fed a power
 pad like a termaline with an attenuated output? Was that talk, or did
 they ever do anything with that?
 
 --- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@...
 wrote:
 
  That was an auto ranging voltmeter. They were rather expensive at the
 time,
  compared to nowadays. As I remember it you could select auto range, or
 lock
  it in a particular range.
 
  73
  Gary  K4FMX
 
   -Original Message-
   From: Alicia Mehrdad [mailto:abcza...@...]
   Sent: Wednesday, March 24, 2010 3:26 PM
   To: gascha...@...; skipp...@...; Repeater-
   buil...@yahoogroups.com
   Subject: Helper Instruments (Voltadder VA 502)
  
   Hello gentlemen, I found your e-mails on line and  I was wondering
 if
   you could help me figure out what type of equipment is this, I have
 a
   Voltadder Part No. VA 502 from Helper Instruments, it has two
 windows
   with a needle meter type and in between the windows it has some
 lights
   and number going down.  please see example below.
  
   -DC + Volts db AC,
   500+ 50
   150+ 40
   50  +30
   15  +20
5   +10
   1.5  0 db
   .5-10
   .15  -20
  
   .  Your help would be greatly appreciated.  thank you.
 
 
 
 
 
 
 
 
 
 Yahoo! Groups Links
 
 
 



[Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)

2010-03-24 Thread Dawn
Gary, You're thinking about the Power Pad. We used those for IMTS. IIRC, that 
wasn't just a regular attenuator, but was a three port device like you said and 
a fantastic product. Helper was looking into a combination power pad and watt 
meter right around the time between the Modulation Monitor and the SM512. 
Com-Ser came out with something like that about the same time integrated into a 
combination DVM/Wattmeter/Tone  Audio counter with a switchable 20/40 db 
load/pad. That was a great idea too, but it never sold well. They incorporated 
the same idea into their later service monitor BR1100? Even added an Octopus to 
the scope section.

 There were very few combination analog/DVM's at service instrument prices and 
the DMM's that had bar graphs didn't have the resoloution for trends at the 
time. I can only think of a few off hand such as the Keithly,Simpson had an 
early one in a 260 type case with Nixies,Ballentine $, and Fluke . I 
think Heath had one for a short time too. I'd love to see a picture of this 
meter. I'm still trying to grasp what was so special about two separate meters 
for AC and DC. There had to be some of Bill's magic either comparator presets, 
audible alarm or some neat thing that would make service easier.

While the subject is odd Helper stuff, remember the Mod Box or the Sineman? 

 

--- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote:

 Yes he did build some for a few years. They were never a big seller as the
 price was pretty high. They did work pretty well. It did not have a digital
 display, only analog meters. There were lights that showed what range it was
 on. You could read AC on one meter and DC on the other. Handy for some
 things.
 
 I kind of remember him playing around with an attenuator pad to go ahead of
 a service monitor. I don't remember the wattmeter part though.
 
 There was a guy in California making a 40 db power pad to use ahead of a
 service monitor. It was made during the Singer monitor era to go in front of
 it. It had a port for the transceiver and one for the signal generator and
 another for the receive input on the monitor. It worked pretty well. There
 may be a few floating around yet.
 
 73
 Gary  K4FMX
 
  -Original Message-
  From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
  buil...@yahoogroups.com] On Behalf Of Dawn
  Sent: Wednesday, March 24, 2010 4:37 PM
  To: Repeater-Builder@yahoogroups.com
  Subject: [Repeater-Builder] Re: Helper Instruments (Voltadder VA 502)
  
  Whoa!
  Bill actually went through with this? I never seen this as a production
  item although the idea of a service bench Analog/Digital voltmeter was
  something he was interested in doing. The DMM's A/D section was to go to
  an integrator and drive a meter for peaking or nulling. My understanding
  was this was going to be a service grade instrument with a 3 1/2
  autoranging digit DMM basic. Was this a protoype? Are there any pics?
  
  While we're at it, what ever happened to the watt meter that fed a power
  pad like a termaline with an attenuated output? Was that talk, or did
  they ever do anything with that?
  
  --- In Repeater-Builder@yahoogroups.com, Gary Schafer gaschafer@
  wrote:
  
   That was an auto ranging voltmeter. They were rather expensive at the
  time,
   compared to nowadays. As I remember it you could select auto range, or
  lock
   it in a particular range.
  
   73
   Gary  K4FMX
  
-Original Message-
From: Alicia Mehrdad [mailto:abcza...@]
Sent: Wednesday, March 24, 2010 3:26 PM
To: gaschafer@; skipp025@; Repeater-
buil...@yahoogroups.com
Subject: Helper Instruments (Voltadder VA 502)
   
Hello gentlemen, I found your e-mails on line and  I was wondering
  if
you could help me figure out what type of equipment is this, I have
  a
Voltadder Part No. VA 502 from Helper Instruments, it has two
  windows
with a needle meter type and in between the windows it has some
  lights
and number going down.  please see example below.
   
-DC + Volts db AC,
500+ 50
150+ 40
50  +30
15  +20
 5   +10
1.5  0 db
.5-10
.15  -20
   
.  Your help would be greatly appreciated.  thank you.
  
  
  
  
  
  
  
  
  
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