[BVARC] Is it ok to list equipment
Chris Medlin
ctmedlin at outlook.com
Thu Aug 17 20:16:27 CDT 2023
Hahaha! I love it!
73/Chris/AC5CM
From: BVARC <bvarc-bounces at bvarc.org> On Behalf Of Mike Hardwick via BVARC
Sent: Thursday, August 17, 2023 12:23 PM
To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc at bvarc.org>
Cc: Mike Hardwick <n5vcx at att.net>; Rick Fosburgh <rickfosb at gmail.com>
Subject: Re: [BVARC] Is it ok to list equipment
Go for it. List away.
If it’s a Icom 706 Mk2G for $50, I’ll take it!
Mike Hardwick
N5VCX
On Aug 17, 2023, at 12:17 PM, Rick Fosburgh via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
Hi
I am doing a bit of Marie Kondo in my shack and am wondering if ok to list an item here?
Trying to “bring joy” to my space and possibly another ham. 😊
Thanks
Rick KE5DI
Sent from my iPhone
On Aug 17, 2023, at 11:49, Rick Hiller via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
Tnx fer the correction, Gus…..weakening eye site I’m sure. Hi
RH
Sent from my i-Thingamajig
On Aug 17, 2023, at 9:35 AM, Gus Bernard via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
Rick meant March 2020. 😉
Gus
On Wed, Aug 16, 2023 at 12:17 AM mike.williams shopjubilee.com<http://shopjubilee.com/> via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
Thanks Rick!
Mike KK5SC
Sent from my Galaxy
-------- Original message --------
From: Rick Hiller via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>>
Date: 8/16/23 12:09 AM (GMT-06:00)
To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc at bvarc.org<mailto:bvarc at bvarc.org>>
Cc: Rick Hiller <rickhiller73 at gmail.com<mailto:rickhiller73 at gmail.com>>
Subject: Re: [BVARC] High power EFHW Antenna/ MFJ-1982HP
Mike,
The Radio Hotel Nov 2016 and May 2020 are about wire for antenna use. References are given for more indepth studies, etc.
Go to https://bvarc.org/home/tech-downloads/
GL and 73...Rick W5RH -- The Radio Hotel
On Tue, Aug 15, 2023 at 5:42 PM Gus Bernard via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
BTW, for antenna wire, see articles by our own Rick Hiller in the technical section at www.bvarc.org<http://www.bvarc.org/> . I think he's addressed this subject. I like #14 or #12 insulated. Solid or stranded choice depends on your strength and flexibility requirements. Thicker wire gives a slightly better bandwidth at the cost of weight.
Gus
On Tue, Aug 15, 2023, 5:30 PM Gus Bernard <gnelnard at gmail.com<mailto:gnelnard at gmail.com>> wrote:
See product design specs, as well as articles, at Balun Designs.Com. use the core mix type for the bands you'll operate on. For high power, double-up on size 240 cores. Youtube "TRX Bench" channel has a great 4-part video series on building baluns.
My experience tells me that if I want a long lasting, reliable balun (good quality components and workmanship that withstand the elements), it's more cost effective to buy off the shelf from Balun Designs or equivalent. (The amount I saved wasn't worth the trouble.) Of course, making my own is fun and educational; but I now buy my baluns from Bob.
Gus K5GMB
On Tue, Aug 15, 2023, 10:39 AM mike.williams shopjubilee.com<http://shopjubilee.com/> via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:
Time to pick your brains…
I am interested in EFHW antennas for primary use on 20/40/80m – but want to be able to run my Worthmore 600w amplifier.
I found a MFJ model - MFJ-1982HP is rated for 800pep
https://mfjenterprises.com/products/mfj-1982hp
This antenna is available in three power ratings:
MFJ-1982LP – 30w
MFJ-1982MP – 300w
MFJ-1982HP – 800w
Anyone have experience with this antenna?
A couple of questions –
1. If you have experience with high power (>= 600w) transformers for EFHW antennas, what design did you use
* Core type and number of cores
* type 53 has a higher curie temp as opposed to type 43....
* Wire AWG?
* I see a number of YouTube videos recommending 56:1 as 49:1
* Comments?
1. What is your recommended wire for the radiation element?
* Material –
i. Copper over steel?
ii. Hard-drawn copper?
iii. Other
b.AWG?
i. Number of Strands & strand count?
c. Jacket material
d. Other?
Your guidance is appreciated!
’73,
Mike KK5SC
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--
Rick Hiller
e-mail: rickhiller73 at gmail.com<mailto:rickhiller73 at gmail.com>
Cell: 832-474-3713
Physical: 9031 Troulon Drive
Houston, TX 77036
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