I'd forgotten that he didn't have an ohm meter. I've just never completely
trusted the protection circuits or the fuses to do their job. I always
think of the corollary to Murphy's Law that says that a $200 picture tube
will destroy itself to protect a 50 cent fuse.
Steve
----- Original Message -----
From: "Butch Bussen" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 16, 2011 18:34
Subject: Re: Sighted Hams In Sacramento Not Really Helpful
>I also use an ohm meter, but I was under the impression he didn't have
> one and I've done this when one wasn't handy. Astron supplies I've
> messed with have over current shutdown, so it just turns itself off. If
> it didn't you'd just blow a fuse.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
>
>
> On Fri, 16 Dec 2011, Steve Dresser
> wrote:
>
>> Butch,
>>
>> I wouldn't have tried that because I'd be afraid of damaging the supply.
>> Nevertheless, it's hard to argue with 40 years of success.
>>
>> Since I have an ohm meter I can use, I attach the ground lead of the
>> meter
>> to some metal on the case of the radio, and then touch each of the power
>> leads with the meter's probe. One of them gives me a reading of 0, and I
>> know that one is ground. This technique has never failed me, and I like
>> the
>> idea that nothing has to be "live" for the test. Of course, I'm assuming
>> a
>> negative ground, which is pretty much always the case these days.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Butch Bussen" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, December 16, 2011 17:37
>> Subject: Re: Sighted Hams In Sacramento Not Really Helpful
>>
>>
>>> I don't have a clue why you say don't do that. Doesn't have a damn
>>> thing to do with coax!!! All I said was to use the case of the radio as
>>> a temporary ground
>>> You won't fry anything!!!! good grief I've been doing this for over 40
>>> years. This is a way to tell which lead from your power cord is red or
>>> ground. If you take a wire from the supply and hook to the radio case,
>>> that is assuming you know which is ground, this works. If you touch the
>>> actual ground lead from your power cord to the plus, it is a short, but
>>> astron supplies will just shut down. If you touch a wire from your
>>> power cord and radio plays, you know you have it right. Remove the temp
>>> jumper from supply ground to case and hook up the power cord ground.
>>> The only thing you positively have to know is plus and minus on your
>>> supply. Before you criticize what I write, think it through!!!!
>>> 73
>>> Butch
>>> WA0VJR
>>> Node 3148
>>> Wallace, ks.
>>>
>>>
>>> On Fri,
>>> 16 Dec 2011, Michael Thurman wrote:
>>>
>>>> do NOT do that
>>>> you will fry your radio or supply!!!!!!!!! the ground n the coax is NOT
>>>> =
>>>> big enough to carry the full output of most supplies and withot a fuse
>>>> =
>>>> it will NOT shut down you are depending on a fuse which may or may not
>>>> =
>>>> be htere use a meter or do NOT do it period!!!
>>>>
>>>> On Dec 14, 2011, at 10:42 PM, Butch Bussen wrote:
>>>>
>>>>> Do you have a talking meter you can check voltage or ohms with? I
>>>>> can=20=
>>>>
>>>>> check my kenwood power cords and tell you which one is plus.
>>>>> Another=20=
>>>>
>>>>> trich that works, if you know which lead out of your power supply
>>>>> is=20=
>>>>
>>>>> ground is to hook that one to a tround on your caase, mouting screw
>>>>> or=20=
>>>>
>>>>> whatever. If you hook up the actual ground wire to the hot side of =
>>>> your=20
>>>>> supply, it will short it and should just shut down. If the radio =
>>>> works,=20
>>>>> then you know you have it right and hook up the actual ground wire to
>>>>> =
>>>> the=20
>>>>> supply. Hope that makes sense.
>>>>> 73
>>>>> Butch
>>>>> WA0VJR
>>>>> Node 3148
>>>>> Wallace, ks.
>>>>
>>>>
>>>
>>
>>
>
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