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Re: [RFI] Choke questions

To: rfi@contesting.com
Subject: Re: [RFI] Choke questions
From: Clay Autery <KY5G@montac.com>
Date: Wed, 22 Jan 2020 17:50:18 -0600
List-post: <mailto:rfi@contesting.com>
"Vast majority", but not ALL...  I still make custom cables one at a time with the best materials and tooling I can find/afford.  N, SMA, BNC, and even TMP, et al.  Granted, since Amphenol purchased Times Microwave, it appears that Amphenol RF or whoever the parent is  is choking off the market for Times cable stock and for sure connectors.  MANY fewer places to buy genuine Times connectors.  And it is HARDER to find the US manufactured Amphenol parts too.  I ahve take to characterizing every cable I make for myself on my VNA, et al. to make SURE it performs as I intend it to.  I offer this as an option for client cables.

But, as you point out....  I am in the US and do not work in a commie factory/dorm at next to zero wages, so yes, my rates are somewhat higher.  <smile>

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/22/20 11:10, Gedas wrote:
Keep in mind that the vast majority of even high end cables and connectors are now mostly made in China. Some in the Philippines, Malaysia, etc.

For example the last batch of brand new Amphenol N-conn crimps have made in china stamped right on the Amphenol bag.

But if you are USA only then look for Harbour Industries.

Gedas, W8BYA EN70

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 1/22/2020 11:19 AM, Dave Cole wrote:
Thank Jim,
I do care if it came from China, do you have a US based cable you know of?  I want to build a few of Jim's chokes, so I want decent cable.  No ends needed.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 1/22/20 7:31 AM, Gedas wrote:
What kind of length(s) are you looking for and do you want connectors on the end?

Many of the RG-400 coax are made in China, there are some US based companies like Harbour Industries etc that specialize in Teflon based coaxial cables but they are going to be more expensive then the asian made cables.

If you do not care if it came from china have a look at:

https://www.ebay.com/itm/RG400-100FT-50-ohm-Double-Shielded-Coaxial-cable-with-Tan-FEP-Jacket/222770013314?hash=item33de20a482:g:Y-QAAOSw~4hbw63R

Gedas, W8BYA EN70

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 1/22/2020 10:09 AM, Dave Cole wrote:
Anyone know where to get RG-400 for a decent price?

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 1/22/20 6:59 AM, Gedas wrote:
Another Teflon based coax similar to 50-ohm RG-142 and 75-ohm RG-179 is 75-ohm RG-187.

Gedas, W8BYA EN70

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 1/22/2020 1:35 AM, Jim Brown wrote:
On 1/21/2020 8:02 PM, John K9UWA wrote:
Is there a 75 ohm equivalent to RG400 coax?

Not that I know of, although are there's at least one sort of like RG142. KZ1W sent me several miniature coaxes to evaluate for chokes for TX 4-squares, the most useful of which seems to be RG179. It's addressed in the Cookbook.

73, Jim K9YC
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