[TowerTalk] Evaluating coaxial cable not from a dealer

[Don]

Ideal product to use for those who can obtain access to one that is up 
to snuff re calibration. Discontinued back in 2007, this is one of a 
couple of good articles on the unit and its use.

http://www.prc68.com/I/Tek1502.shtml <http://www.prc68.com/I/Tek1502.shtml>

Don T W7WLL

On 3/6/2021 3:37 PM, Don Moman VE6JY wrote:
> Tektronix 1502 TDR or equivalent..... no connectors needed. Measures the
> length pretty well too and sees any impedance flaws. Especially bullet
> holes.
>
> On Sat, Mar 6, 2021 at 4:32 PM Steve K8JQ <stevejq at suddenlink.net> wrote:
>
>> Occasionally someone will post here or on other amateur radio forums
>> coaxial cable for sale. Often unused, left over from a project, on a
>> reel, pickup only, as-is where-is, cash. If one were to pursue such a
>> purchase, what would one look for and/or do to validate that the cable
>> is good?
>>
>> An eyeball physical inspection of the cable is an obvious thing to do.
>> One can see the outer layer of cable on the reel and perhaps both ends
>> of the cable. Is that enough?
>>
>> Should one make some electrical tests before handing over the cash? What
>> tests and with what test equipment? A few spot frequencies? Wideband
>> sweeps? Antenna analyzer? VNA? Transmitter with power meter? Something
>> else? What would you do if both ends are not available or do not have
>> connectors?
>>
>> Is it OK to transport a reel with a few hundred feet (or more) of cable
>> on its side or should the reel be "standing up" in the bed of a pickup
>> truck?
>>
>> What else to look for, think about, consider?
>>
>> Steve, K8JQ
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