[Fourlanders] Fw: [VHF] Fwd: 7-16 Adapters

[Jim Worsham]

Wow!  200 volts/meter is a serious field strength.  I assume no one was in the chamber at the time.  N Connectors are not good for high power (more than several 100 Watts) at the frequencies we play at but a lot of hams and engineers who should know better use them with some success until something like what you described happens.

73
Jim, W4KXY

Sent from my iPad

> On Jul 11, 2017, at 7:53 AM, Tom McElroy <tommcelroy.mail at gmail.com> wrote:
> 
> Thanks Jim.  I missed that conversation.  A while back, I was performing a RS103 test with an amplifier strong enough to produce 200 volts/meter field strength from 100-1000 MHz.  An unanticipated resonance had developed, causing our impedance matching and SWR go sky-high, and I watched an N-connector feed-through suddenly droop, melt, and spark.  The test chamber stunk for days after.
> 
> 73
> Tom / W4SDR
> 
>> On Mon, Jul 10, 2017 at 10:49 PM, Jim Worsham <w4kxy at bellsouth.net> wrote:
>> FYI, for anyone interested.  When I mentioned on the mountain in June that N Connectors are not rated for more than a kw at VHF and even less at UHF someone asked me what folks running serious power (EME) use for RF connectors.  This is the answer 7-16 DIN.
>> 
>> 73
>> Jim, W4KXY
>> 
>> -----Original Message----- From: Pete Manfre via VHF
>> Sent: Monday, July 10, 2017 8:55 PM
>> To: VHF Reflector ; ham-antennas at yahoogroups.com
>> Subject: [VHF] Fwd: 7-16 Adapters
>> 
>> 
>> 
>> 
>> *I found a big heavy box of NOS adapters in my basement.  I do not need
>> all of them so I will sell off the excess if anyone could use some.
>> These are _/New Never used Suhner and Narda/_ ... some bulk packed and
>> some in bags.*
>> 
>> 
>> I have the following available....
>> 
>> 34 pcs 7-16M to Nm
>> 26 pcs 7-16F to Nf
>> 12 pcs 7-16 90deg angle M to F
>> 8  pcs 7-16 F to Nm
>> 9  pcs 7-16 M to M
>> 11 pcs 7-16 F to F
>> 11 pcs 7-16 M to F (connector saver)
>> 1  pcs 7/16 M to Nf
>> 
>> $14.50 each + Shipping,
>>  buy over 6 ... $13.50 each + shipping
>> buy all 114 pcs $1450 Shipped ( preference given to complete lot buy) (
>> will consider trades on complete lot buy)
>> 
>> Thanks for looking,
>> Pete WA2ODO
>> 
>> 
>> -- 
>> 
>> 
>>> ++++++CONFIDENTIALITY NOTICE++++++ The information in this email may be confidential and/or privileged. This email is intended to be reviewed by only the individual or organization named above. If you are not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any review, dissemination or copying of this email and its attachments, if any, or the information contained herein is prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system.
>> 
>> 
>> 
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> https://www.avast.com/antivirus
>> _______________________________________________
>> VHF mailing list
>> VHF at w6yx.stanford.edu
>> https://w6yx.stanford.edu/mailman/listinfo/vhf 
>> _______________________________________________
>> Fourlanders mailing list
>> Fourlanders at contesting.com
>> http://lists.contesting.com/mailman/listinfo/fourlanders
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.contesting.com/pipermail/fourlanders/attachments/20170712/bbd618f5/attachment.html>