Thursday, 29 August 2013

[Amateur-repairs] Re: In search of the basic test equipment for workbench.

 

I agree that a tek scope should be your first purchase. I got mine from ebay and did some minor repairs. You can see a very basic workbench here: http://www.qrz.com/db/W8EZI

I have repaired a lot of transceivers and audio equipment at that bench. The radio sitting on the bench in the picture is a Icom 751A that belongs to a friend. It had burned out finals with associated damage.

Michael

--- In Amateur-repairs@yahoogroups.com, "k4tfj" <timothy.f.johnston@...> wrote:
>
> I haven't had a functioning workbench in 20+ years.
> But now, with an empty nest and rooms available, the bench will be born soon, but as with all newborns, it will be naked, with the exception of a couple DMM's and a MFJ-259B antenna analyzer.
>
> The DMM's are fairly basic, but one has frequency measurement to 10MHz and a capacitance function. The 259B has a frequency counter function as well as inductance, capacitance and the ability to generate un-modulated RF signals. I also have a DSI 5600A counter waiting to be repaired (just a bad 7805, I think). That being the current state of my test equipment.
>
> My intent is to be able to perform basic alignments and testing of my current radio gear, and a little experimentation and restorations. Rigs/radios include Conar 400/500, Kenwood TS-520s, Alinco DX-70T, assorted VHF mobiles and handhelds. Up for restoration currently is a Zenith 11S474 Receiver and a Hammurland SP-600-11 Receiver.
>
> Budget is $200-$300 a month, to locate and purchase affordable test equipment.
>
> My first instinctive thought is "I need an O'scope!!" and a VOM/VTVM capable of 3kvdc+.
> Any comments and recommendations on these?
>
> What other gear would you recommend and in what priority?
>
>
> TJ, K4TFJ
>

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Wednesday, 28 August 2013

Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 


I suppose one just needs to check with a scope to see what's coming out. The
ferroresonant Solas that I've seen produce clipped sine waves.

73

-Jim
NU0C

On Wed, 28 Aug 2013 19:35:50 -0700, Richard Knoppow wrote:

>
>----- Original Message -----
>From: "Jim Shorney" <jshorney@inebraska.com>
>To: <Amateur-repairs@yahoogroups.com>
>Sent: Wednesday, August 28, 2013 6:33 PM
>Subject: Re: [Amateur-repairs] In search of the basic test
>equipment for workbench.
>
>
>
>Solas don't produce a pure sine wave. This will tend to
>throw some voltage
>readings off.
>
>73
>
>-Jim
>NU0C
>
>
> Modern regulating transformers put out quite pure sine
>waves. Some very early Sola types did not. I doubt if the
>impurity would cause any significant measurement error
>especially after being turned to DC. The error in a meter
>depends on type of AC to DC converter it uses. A single
>diode, as found in RF meters, is RMS reading for very low
>levels, i.e. below about 1.5 volts, and becomes a peak
>reader at higher voltages. In the range where it is peak
>reading the error can be as large as the percentage of
>harmonics in the signal. Most audio meters and others like
>the Hewlett-Packard 400 series, use a full-wave bridge.
>These respond to the average of the waveform. The error from
>the RMS calibration can be several percent but is much
>smaller than for a peak reading meter. Of course, a
>true-RMS meter is immune to these errors. Note that both
>single diode and bridge type meters are calibrated in the
>RMS value of a sine wave which accounts for the error since
>they do not really read RMS.
> Non-electronic meters such as analogue VOM's are bridge
>type which respond to the average but are calibrated as RMS.
>
>
>--
>Richard Knoppow
>Los Angeles
>WB6KBL
>dickburk@ix.netcom.com
>
>
>

--
The universe we're in will reach absolute zero in three hours. Safe is relative. - Idris, "The Doctor's Wife"

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 


----- Original Message -----
From: "Jim Shorney" <jshorney@inebraska.com>
To: <Amateur-repairs@yahoogroups.com>
Sent: Wednesday, August 28, 2013 6:33 PM
Subject: Re: [Amateur-repairs] In search of the basic test
equipment for workbench.

Solas don't produce a pure sine wave. This will tend to
throw some voltage
readings off.

73

-Jim
NU0C

Modern regulating transformers put out quite pure sine
waves. Some very early Sola types did not. I doubt if the
impurity would cause any significant measurement error
especially after being turned to DC. The error in a meter
depends on type of AC to DC converter it uses. A single
diode, as found in RF meters, is RMS reading for very low
levels, i.e. below about 1.5 volts, and becomes a peak
reader at higher voltages. In the range where it is peak
reading the error can be as large as the percentage of
harmonics in the signal. Most audio meters and others like
the Hewlett-Packard 400 series, use a full-wave bridge.
These respond to the average of the waveform. The error from
the RMS calibration can be several percent but is much
smaller than for a peak reading meter. Of course, a
true-RMS meter is immune to these errors. Note that both
single diode and bridge type meters are calibrated in the
RMS value of a sine wave which accounts for the error since
they do not really read RMS.
Non-electronic meters such as analogue VOM's are bridge
type which respond to the average but are calibrated as RMS.

--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@ix.netcom.com

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 


I like to have a decent shortwave receiver handy. My current preference is a
DX-400/CR-2021, but if you've got room for a R-390A ... Nice for sniffing
oscillators and IF stages, monitoring transmit signals, and it entertains you
when not serving as test gear.

73

-J9im

On Wed, 28 Aug 2013 14:16:48 -0700 (PDT), Jim wrote:

>Here's my list of essentials --
>
>-- Harbor Freight $2.99 DVM (OK to substitute a $299 Fluke 179 DVM) OK to have several
>-- MFJ-269 antenna analyzer (OK to substitute an MFJ-259)
>-- VTVM -- whatever's working, from the swapfest
>-- dual-channel 100 MHz analog 'scope, your choice
>-- AADE LC-2 cap/inductance meter
>-- RF power meter that's not subject to easy tampering, like a Bird 43
>-- el cheapo RF power meter like a CB tester, Realistic 3-meter is my preferred choice
>-- signal generator good to your max freq of interest, HP8640B recommended, with 1024 MHz option
>-- another signal generator, BA or GR is OK
>-- audio signal generator, HB is fine
>-- freq counter good to your max freq of interest, at least 6 digits, NOT some cheap piece of junk
>-- ESR tester, Chinese junk is OK
>-- big isolation transformer and big variac, minimum 5 amp
>-- homemade DC load capable of sinking at least 20 amps (a bunch of car headlights works FB) with a current meter
>-- RF dummy load, more than one, pwr good to your max HF output and another one good to your max freq
>-- probes and test leads as required for all the equipment
>-- coaxial interconnects as required for all equipment using coax connectors
>-- 30 or 40 dB coaxial tap good to at least 1 GHz
>-- big-a$$ DC power supplies at (nominal) 13.8VDC, 28VDC, 48VDC
>-- metered variable DC supply, 0 - 35VDC or thereabouts
>-- big-@$$ handful of clip leads, more than you can count
>
>One piece I've also found useful is one of Kent Britain's log-periodic microwave PCB antennas on a length of microwave-suitable coax, for use as a signal sniffer.
>
>And ... a shipping scale, so you can weigh your junk before you take it to the post office.
>
>
>Add to that, I have a couple of spectrum analyzers, but I don't consider those to be essential, just "nice to have."
>
>
>73
>Jim N6OTQ
>
>
>
>>________________________________
>>
>>
>>
>
>[Non-text portions of this message have been removed]
>
>

--
Ham Radio NU0C
Lincoln, Nebraska, U.S.S.A.
TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time!

"Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime."

HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/
http://incolor.inetnebr.com/jshorney
http://www.nebraskaghosts.org

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 


Solas don't produce a pure sine wave. This will tend to throw some voltage
readings off.

73

-Jim
NU0C

On Wed, 28 Aug 2013 17:48:57 -0700 (GMT-07:00), Richard Knoppow wrote:

>-----Original Message-----
>>From: Bob Albert <bob91343@yahoo.com>
>>Sent: Aug 28, 2013 4:51 PM
>>To: "Amateur-repairs@yahoogroups.com" <Amateur-repairs@yahoogroups.com>
>>Subject: Re: [Amateur-repairs] In search of the basic test equipment for workbench.
>>
>>I don't think the Sola is a good idea for a test bench unless you have lousy line regulation. These days it's very stable. A 'variac' is a better choice, with voltmeter and, perhaps, ammeter.
>>
>>I have the Precision E200-C for sale.
>>
>>Let me know details of your VHF/UHF converters. My fastest 'scope goes to 275 MHz but my everyday 'scope only goes to 100 MHz.
>>
>>The signal tracer is kind of superfluous, if you have an oscilloscope.
>>
>>Just a few remarks after reading your list. Not a bad start at all, actually. An audio oscillator would be a nice addition.
>>
>>
>>Bob K6DDX
>>
> I agree about the metered Variac or even an unmetered one. The metered ones are rare and expensive. I bought mine before they became valuable. Its very useful because you can see immediately if there is a sudden rise in input current and shut the thing off. Its also fused.
> Unmetered Variacs are a lot cheaper and easier to come by. You can always rig it with a voltmeter and amp meter.
> Sola transformers work well but are mainly for regulation and filtering of the line. The Sola does have one virtue for trouble shooting, if the load is too high, like a short, it shuts down.
>
>
>

--
"There's something out of place – let's go and poke it with a stick." – The Doctor, "Amy's Choice"

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 



-----Original Message-----
>From: Bob Albert <bob91343@yahoo.com>
>Sent: Aug 28, 2013 4:51 PM
>To: "Amateur-repairs@yahoogroups.com" <Amateur-repairs@yahoogroups.com>
>Subject: Re: [Amateur-repairs] In search of the basic test equipment for workbench.
>
>I don't think the Sola is a good idea for a test bench unless you have lousy line regulation.  These days it's very stable.  A 'variac' is a better choice, with voltmeter and, perhaps, ammeter.
>
>I have the Precision E200-C for sale.
>
>Let me know details of your VHF/UHF converters.  My fastest 'scope goes to 275 MHz but my everyday 'scope only goes to 100 MHz.
>
>The signal tracer is kind of superfluous, if you have an oscilloscope.
>
>Just a few remarks after reading your list.  Not a bad start at all, actually.  An audio oscillator would be a nice addition.
>
>
>Bob K6DDX
>
I agree about the metered Variac or even an unmetered one. The metered ones are rare and expensive. I bought mine before they became valuable. Its very useful because you can see immediately if there is a sudden rise in input current and shut the thing off. Its also fused.
Unmetered Variacs are a lot cheaper and easier to come by. You can always rig it with a voltmeter and amp meter.
Sola transformers work well but are mainly for regulation and filtering of the line. The Sola does have one virtue for trouble shooting, if the load is too high, like a short, it shuts down.

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 

I agree that a scope would be good to get next. You can find some reasonablely priced ones on Ebay that might just need a little repair or none at all. When I worked for a small company that repaired test equipment, all of us technicians outfitted our benches with test equipment purchased off of EBay. Most of the time with no repair needed.  You should be able to find a high voltage probe that will work with your vom and scope. A demodulator probe for the scope would come in handy too.
 
73,
John N4SME
 

>________________________________
> From: k4tfj <timothy.f.johnston@gmail.com>
>To: Amateur-repairs@yahoogroups.com
>Sent: Wednesday, August 28, 2013 12:01 PM
>Subject: [Amateur-repairs] In search of the basic test equipment for workbench.
>
>
> 
>
>I haven't had a functioning workbench in 20+ years.
>But now, with an empty nest and rooms available, the bench will be born soon, but as with all newborns, it will be naked, with the exception of a couple DMM's and a MFJ-259B antenna analyzer.
>
>The DMM's are fairly basic, but one has frequency measurement to 10MHz and a capacitance function. The 259B has a frequency counter function as well as inductance, capacitance and the ability to generate un-modulated RF signals. I also have a DSI 5600A counter waiting to be repaired (just a bad 7805, I think). That being the current state of my test equipment.
>
>My intent is to be able to perform basic alignments and testing of my current radio gear, and a little experimentation and restorations. Rigs/radios include Conar 400/500, Kenwood TS-520s, Alinco DX-70T, assorted VHF mobiles and handhelds. Up for restoration currently is a Zenith 11S474 Receiver and a Hammurland SP-600-11 Receiver.
>
>Budget is $200-$300 a month, to locate and purchase affordable test equipment.
>
>My first instinctive thought is "I need an O'scope!!" and a VOM/VTVM capable of 3kvdc+.
>Any comments and recommendations on these?
>
>What other gear would you recommend and in what priority?
>
>TJ, K4TFJ
>
>
>

[Non-text portions of this message have been removed]

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 

I don't think the Sola is a good idea for a test bench unless you have lousy line regulation.  These days it's very stable.  A 'variac' is a better choice, with voltmeter and, perhaps, ammeter.

I have the Precision E200-C for sale.

Let me know details of your VHF/UHF converters.  My fastest 'scope goes to 275 MHz but my everyday 'scope only goes to 100 MHz.

The signal tracer is kind of superfluous, if you have an oscilloscope.

Just a few remarks after reading your list.  Not a bad start at all, actually.  An audio oscillator would be a nice addition.

Bob K6DDX

________________________________
From: "qrv@kd4e.com" <qrv@kd4e.com>
To: Amateur-repairs@yahoogroups.com
Sent: Wednesday, August 28, 2013 2:54 PM
Subject: Re: [Amateur-repairs] In search of the basic test equipment for workbench.


 
Given my limited budget I've assembled the following mix ...

In process:

Add 6m, 2m & 440 converters to extend the range of my Velleman
APS230 solid state scope to cover all of the HF-UHF bands I use.

Use a RTL-SDR dongle w/HF mod with computer software as a
Spectrum Analyzer, Scope, etc. See details here:
http://forums.qrz.com/showthread.php?391657-RTL-2832u-R820T-SDR-as-a-Spectrum-Analyser
(I use Linux so this piece is taking much longer than I hoped as
manufacturers are chronically wedded to MS & don't release driver
data for Linux.)

SOLA Constant Voltage/Isolation Transformer (needs work)

I'm considering the purchase of a Precision E-200 Sig Gen.

Have in place:

Victor VC3165 Cheap Chinese 0.01Hz - 2.4 GHz Frequency Counter

Cheap Chinese multi-tester module (no case) - semiconductor, diodes,
caps, resistors, smd's, etc.

Eico 950B Resistor-Capacitor Bridge Comparator

Heathkit Signal Tracer T-4

Fluke 85-III DMM

TopHand Voice-Readout Hands-Free DMM

MFJ-269 Frequency Analyzer (also a counter & sig gen)

Bendix 636N 1KW Dummy Load

RLC DC-24.5GHz 40w Dummy Load

IOTA 12v 45a charger w/IQ4 floated across a big deep-cycle
battery supplying two metered DC power strips.

MW 122A 2a 3v, 4.5v, 6v, 7.5v, 9v, 12v DC Supply.

Now if only I could figure out how to use it all productively ...

--

Thanks! & 73, KD4E.com

David Colburn - Nevils, Georgia USA

Search with: duckduckgo.com

Android for Hams: groups.yahoo.com/group/hamdroid
Creative Tech: groups.yahoo.com/group/ham-macguyver
Raspi Alternative: groups.yahoo.com/group/beagleboneblack/

Restored to design-spec at Heaven's gate 1Cor15:22

[Non-text portions of this message have been removed]

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RE: [Amateur-repairs] In search of the basic test equipment for workbench.

 

For whatever it's worth, I once had a Precision E-200 Sig Generator. I
would never have another. Very unstable, drifts and inaccurate. Cheaply
made.
Ray, W4BYG

-----Original Message-----
From: Amateur-repairs@yahoogroups.com
[mailto:Amateur-repairs@yahoogroups.com] On Behalf Of qrv@kd4e.com
Sent: Wednesday, August 28, 2013 5:54 PM
To: Amateur-repairs@yahoogroups.com
Subject: Re: [Amateur-repairs] In search of the basic test equipment for
workbench.

Given my limited budget I've assembled the following mix ...

In process:

Add 6m, 2m & 440 converters to extend the range of my Velleman APS230 solid
state scope to cover all of the HF-UHF bands I use.

Use a RTL-SDR dongle w/HF mod with computer software as a Spectrum Analyzer,
Scope, etc. See details here:
http://forums.qrz.com/showthread.php?391657-RTL-2832u-R820T-SDR-as-a-Spectru
m-Analyser
(I use Linux so this piece is taking much longer than I hoped as
manufacturers are chronically wedded to MS & don't release driver data for
Linux.)

SOLA Constant Voltage/Isolation Transformer (needs work)

I'm considering the purchase of a Precision E-200 Sig Gen.

Have in place:

Victor VC3165 Cheap Chinese 0.01Hz - 2.4 GHz Frequency Counter

Cheap Chinese multi-tester module (no case) - semiconductor, diodes, caps,
resistors, smd's, etc.

Eico 950B Resistor-Capacitor Bridge Comparator

Heathkit Signal Tracer T-4

Fluke 85-III DMM

TopHand Voice-Readout Hands-Free DMM

MFJ-269 Frequency Analyzer (also a counter & sig gen)

Bendix 636N 1KW Dummy Load

RLC DC-24.5GHz 40w Dummy Load

IOTA 12v 45a charger w/IQ4 floated across a big deep-cycle
battery supplying two metered DC power strips.

MW 122A 2a 3v, 4.5v, 6v, 7.5v, 9v, 12v DC Supply.

Now if only I could figure out how to use it all productively ...

--

Thanks! & 73, KD4E.com

David Colburn - Nevils, Georgia USA

Search with: duckduckgo.com

Android for Hams: groups.yahoo.com/group/hamdroid Creative Tech:
groups.yahoo.com/group/ham-macguyver
Raspi Alternative: groups.yahoo.com/group/beagleboneblack/

Restored to design-spec at Heaven's gate 1Cor15:22

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Posted by at No comments:

Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 

Given my limited budget I've assembled the following mix ...

In process:

Add 6m, 2m & 440 converters to extend the range of my Velleman
APS230 solid state scope to cover all of the HF-UHF bands I use.

Use a RTL-SDR dongle w/HF mod with computer software as a
Spectrum Analyzer, Scope, etc. See details here:
http://forums.qrz.com/showthread.php?391657-RTL-2832u-R820T-SDR-as-a-Spectrum-Analyser
(I use Linux so this piece is taking much longer than I hoped as
manufacturers are chronically wedded to MS & don't release driver
data for Linux.)

SOLA Constant Voltage/Isolation Transformer (needs work)

I'm considering the purchase of a Precision E-200 Sig Gen.

Have in place:

Victor VC3165 Cheap Chinese 0.01Hz - 2.4 GHz Frequency Counter

Cheap Chinese multi-tester module (no case) - semiconductor, diodes,
caps, resistors, smd's, etc.

Eico 950B Resistor-Capacitor Bridge Comparator

Heathkit Signal Tracer T-4

Fluke 85-III DMM

TopHand Voice-Readout Hands-Free DMM

MFJ-269 Frequency Analyzer (also a counter & sig gen)

Bendix 636N 1KW Dummy Load

RLC DC-24.5GHz 40w Dummy Load

IOTA 12v 45a charger w/IQ4 floated across a big deep-cycle
battery supplying two metered DC power strips.

MW 122A 2a 3v, 4.5v, 6v, 7.5v, 9v, 12v DC Supply.

Now if only I could figure out how to use it all productively ...

--

Thanks! & 73, KD4E.com

David Colburn - Nevils, Georgia USA

Search with: duckduckgo.com

Android for Hams: groups.yahoo.com/group/hamdroid
Creative Tech: groups.yahoo.com/group/ham-macguyver
Raspi Alternative: groups.yahoo.com/group/beagleboneblack/

Restored to design-spec at Heaven's gate 1Cor15:22

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Posted by at No comments:

Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 

Here's my list of essentials --

-- Harbor Freight $2.99 DVM (OK to substitute a $299 Fluke 179 DVM)  OK to have several
-- MFJ-269 antenna analyzer (OK to substitute an MFJ-259)
-- VTVM -- whatever's working, from the swapfest
-- dual-channel 100 MHz analog 'scope, your choice
-- AADE LC-2 cap/inductance meter
-- RF power meter that's not subject to easy tampering, like a Bird 43 
-- el cheapo RF power meter like a CB tester, Realistic 3-meter is my preferred choice
-- signal generator good to your max freq of interest, HP8640B recommended, with 1024 MHz option
-- another signal generator, BA or GR is OK
-- audio signal generator, HB is fine
-- freq counter good to your max freq of interest, at least 6 digits, NOT some cheap piece of junk
-- ESR tester, Chinese junk is OK
-- big isolation transformer and big variac, minimum 5 amp
-- homemade DC load capable of sinking at least 20 amps (a bunch of car headlights works FB) with a current meter
-- RF dummy load, more than one, pwr good to your max HF output and another one good to your max freq
-- probes and test leads as required for all the equipment
-- coaxial interconnects as required for all equipment using coax connectors
-- 30 or 40 dB coaxial tap good to at least 1 GHz
-- big-a$$ DC power supplies at (nominal) 13.8VDC, 28VDC, 48VDC
-- metered variable DC supply, 0 - 35VDC or thereabouts
-- big-@$$ handful of clip leads, more than you can count

One piece I've also found useful is one of Kent Britain's log-periodic microwave PCB antennas on a length of microwave-suitable coax, for use as a signal sniffer.

And ... a shipping scale, so you can weigh your junk before you take it to the post office.

Add to that, I have a couple of spectrum analyzers, but I don't consider those to be essential, just "nice to have."

73
Jim N6OTQ

>________________________________
>
>
>

[Non-text portions of this message have been removed]

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Re: [Amateur-repairs] In search of the basic test equipment for workbench.

 

I would recommend a good service monitor.  This may give you sticker shock at $ 950 plus shipping.
 
Look at this site:
http://www.amtronix.com/usequip1.htm
 
Then look for the E8285A.  This will do most everything you need in one box for the RF part.
It will take a while to learn if you have never used one.  There is another unit that is similar to it called a 8924C you can find on ebay sometimes for around the same price.  I have one  of those.  It says for cell phones and the frequency range is listed at 30 to 1000 MHz.  It will work to below 1 mhz, but the calibration  for the output and power will fall off around 10 MHz.  You will not be able to input more than 3 watts to them, but the 8924c may come with a 60 or 100 watt input option.
 
On a less expensive item, look at this ebay number:
330855732011
 
It will test many components for you .  Does transistors, diodes, capacitors and inductors.  There are several versions of this type of item, so look around for the one most suited to you.  It is the same thing as a Peak tester but it is not in a case, except Peak makes two , one for simiconductors and another for resistors, capacitors and inductors.  They are around $ 15 to $ 30 for the ones without a case or about $ 100 each for the Peak in the case.
 
You probably will not need to measuer over 1000 volts, but if you do , maybe just the addition of a high voltage probe will work for you.
 
For testing transmitters,you need a dummy load that will handle the power .  Ebay did have some that were rated for around 250 watts for less than $ 50.
 
 
 
 
 

>________________________________
>From: k4tfj <timothy.f.johnston@gmail.com>
>To: Amateur-repairs@yahoogroups.com
>Sent: Wednesday, August 28, 2013 12:01 PM
>Subject: [Amateur-repairs] In search of the basic test equipment for workbench.
>
>
>I haven't had a functioning workbench in 20+ years.
>But now, with an empty nest and rooms available, the bench will be born soon, but as with all newborns, it will be naked, with the exception of a couple DMM's and a MFJ-259B antenna analyzer.
>
>The DMM's are fairly basic, but one has frequency measurement to 10MHz and a capacitance function. The 259B has a frequency counter function as well as inductance, capacitance and the ability to generate un-modulated RF signals. I also have a DSI 5600A counter waiting to be repaired (just a bad 7805, I think). That being the current state of my test equipment.
>
>My intent is to be able to perform basic alignments and testing of my current radio gear, and a little experimentation and restorations. Rigs/radios include Conar 400/500, Kenwood TS-520s, Alinco DX-70T, assorted VHF mobiles and handhelds. Up for restoration currently is a Zenith 11S474 Receiver and a Hammurland SP-600-11 Receiver.
>
>Budget is $200-$300 a month, to locate and purchase affordable test equipment.
>
>My first instinctive thought is "I need an O'scope!!" and a VOM/VTVM capable of 3kvdc+.
>Any comments and recommendations on these?
>
>What other gear would you recommend and in what priority?
>
>
>TJ, K4TFJ
>
>

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