[Harc] Power supplies and feed wire ideas

Mon Jul 6 10:02:29 CDT 2020

 LMR-400 isn't considered hard-line, but it is stiff and has a large bend radius.
Don Nelson
    On Sunday, July 5, 2020, 08:35:33 PM PDT, Howard, KB6NN via Harc <harc at humboldt-arc.org> wrote:  

 "Both RG8/X and RG213/U can be used in applications where the cable needs to be "flexed" (i.e. to go around a rotor) whereas LMR-400 has a solid aluminum (flashed with copper) center conductor and therefore will break in a VERY short period of time if used in an application where the cable is "flexed"." https://forums.qrz.com/index.php?threads/lmr400-or-rg8-or.199215/

As I recall, LMR-400 is also known as "Hard Line".  RG-213 is the premium equivalent of RG-8.  As I recall, RG-8 has an outer diameter of about 1/2 inch.  Many go with RG8X for that reason, but sharp bends in that will eventually degrade the coax due to the foam dialectric and the center conductor will migrate toward the shield.

Someone please correct me if I am wrong on any of the above.

On 7/5/2020 7:11 PM, Donald Nelson via Harc wrote:
>  Cliff,
> I am comfortable buying from radio stores. Nothing from eBay, Craigslist, or Wish. Most radio stores have theï¿½ coax with ends in vairous lengths. For years, my power supply was a battery fed by a small power supply this giving me backup power as well. The battery gives the short term high current capacity and a 3 to 5 amp supply is all that's needed - unless you talk a lot. Then just get the 20 amp supply. I still have the battery and 3 amp supply, but now with a 50 watt solar panel. Works OK in the summer but need the AC power in the winter. Again buy the power supply from a radio store, or some local HAM.
> DonWA6NBG
> 
>      On Sunday, July 5, 2020, 06:17:27 PM PDT, Cliff VanCott via Harc <harc at humboldt-arc.org> wrote:
>  
>    
>    Hello again!
> Thanks to all for the great recommendations and personal insights.ï¿½ The experiences you've shared help me a lot and I've zeroed in on aï¿½Kenwood TM-V71A and either a Comet GP-3, or (most likely) the Diamond x50... mounted on the peak of the roof.
> What I'd like to follow up with is this... What Power Supplies do you use?ï¿½ I'm leaning towards something with power poles on the front (I do intend to move the radio from my house to the car often enough to make easy dis-re-connecting a consideration), and am not ready to build my 'ammo can' go-box yet, so a 120vac to 13.8vdc 30-amp (peak) power supply of some kind seems reasonable.ï¿½ (vice the Bioenno with charger option)ï¿½ (BTW.. There are a couple of LARGE ammo cans listed on Craigslist today!)
> What power supply do you use and what do you like/dislike about it?ï¿½ Where do you find that you shop for things like this the most?ï¿½ Am I missing something?... I encourage your input!
> 
> Also... I figure I'm gonna need a ~30 foot feed line, and am leaning towards LMR 400.ï¿½ Where do you find the best source for genuine coax (with fittings already attached)?ï¿½ I realize this is one thing that some counterfeit poorly, so I don't want to substitute for a faulty product.ï¿½ Any good ideas on how recognize the real thing... or what acceptable substitutes you've found effective?ï¿½ This will be installed once and left in place, so I'm okay with a solid vice stranded core, not sure if there's other considerations I need to think about.
> 
> So, thank you to all who have responded earlier, and to all who are willing to share your experiences.ï¿½ I feel like I'm starting down a path MANY here have already traveled, and am always grateful for advice.
> Thank you... Cliffï¿½ KN6CEJ
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>      On Sunday, June 28, 2020, 08:39:59 PM PDT, Cliff VanCott via Harc <harc at humboldt-arc.org> wrote:
>  
>  Hi all,
> One of the lessons I learned today (Field Day) is this... my HT isn't gonna cut it for the transmit power and versatility I want!ï¿½ My Yaesu FT60R is a fine work horse... but a limited one.
> 
> I hope to add a mobile to my inventory... and would like YOUR inputs as to best features to look for, the things to watch out for and any suggestions on questions I should answer before I hit the order button!ï¿½ I am very interested in your opinions about your rig... and I may come back to local owners with more questions once I buy my own.
> I am a new Technician... but will eventually upgrade to General.ï¿½ I currently only hit v-and-uhf via voice... most likely won't chase cw.ï¿½ I will eventually get into digital, and understand that 40 meter IS something I want to access, because it's useful here in Humboldt.ï¿½ I'll also want to do emergency message-ing... my primary motivation for radio is supporting emergency communications when things go sideways (...but I enjoy the social aspect of the club too.)
> I also like the idea of being able to access the world via a link to my mobile, while i'm carrying my HT down in the canyon.
> So... if you have some info to share, I am open.ï¿½ Suggestions, comments, pitfalls to avoid and 'don't get one without xxxxx' all will help me figure it out.ï¿½ What do you have that you like? What do you wish you'd done different.
> 
> Thanks... I appreciate your help and WILL see you someday! (... and we'll chat on the air!)ï¿½ ï¿½Cliff--
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