Chuck, I stand corrected. For our hobby purposes, 50 vs 75 ohms doesn't
seem to matter, and 75 Ohm cable is much easier and cheaper to find than RG
58 50 Ohm cable! Walt

On Mon, Jan 28, 2019 at 5:53 AM Chuck Hutton <charlesh3@msn.com> wrote:

> Walt -
>
> Belden 8215 is RG6 and is 75 Ohms, not 50 Ohms.
>
> Chuck
>
> ________________________________
> From: IRCA <irca-bounces@hard-core-dx.com> on behalf of Volodya S <
> canswl@gmail.com>
> Sent: Sunday, January 27, 2019 8:10 PM
> To: Mailing list for the International Radio Club of America
> Subject: Re: [IRCA] Coax Cable
>
> High, Jim! I think you have little to worry about no matter what you
> choose, electrically, at least. The more important issue is durability.
> Depending on what I'm doing, I use different coax cables. Lengths
> shouldn't be an issue, either. We experimented with lengths up to 1000' at
> Grayland many years ago, and no difference was seen between (K9AYs, I
> believe) at the ocean shore, or right next to the Grayland Motel, so don't
> worry about that. Next is weight. When travelling, I'll use the super
> thin RG174 coax (50 ohm), which fits nicely into the suitcase at minimal
> weight. For cost, one can't beat 75 ohm RG6 coax which can be purchased
> everywhere for pennies a foot. I've used that a lot over the years, and it
> lasts well for a number of years outside. Now for more permanent weather
> impervious coax, I've used a very heavy duty Belden 8215 milspec 50 ohm
> cable. I was fortunate to buy military surplus brand new role of about
> 1000' or so years ago, and it's virtually indestructible, and can be buried
> without worry about water infiltration, at least not for years. A local
> DXer, Brian Chapel, gave a great idea, though, about what to use with
> regular coax if one buries it on runs. He recommended buying a long run
> (or runs that have been thrown out) of garden hose. What a great idea.
> Then you simply run the coax through it from one end to the other. Don't
> know if anyone has tried this, but if it remains intact, it should keep
> coax dry and clean for many years, buried. Any other thoughts? 73,
> Walt
>
> On Sun, Jan 27, 2019 at 10:26 PM James Niven <jniven@austin.rr.com> wrote:
>
> > I am curious as to what type of coax everyone uses for DKAZ antennas and
> > also general international shortwave band listening dipoles?
> >
> > It's time to revamp my antennas and I want to use the right cable that
> will
> > last for a while.
> >
> >
> >
> > I have read that RG-8U is good for long runs of a 100 to 150 feet, and
> if I
> > was to bury my coax, which is the best pipe/conduit to use to bring my
> > cables into the shack?
> >
> >
> >
> > thanks
> >
> >
> >
> > James Niven
> >
> > Austin, Texas
> >
> >
> >
> > _______________________________________________
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> > IRCA@hard-core-dx.com
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> >
> > Opinions expressed in messages on this mailing list are those of the
> > original contributors and do not necessarily reflect the opinion of the
> > IRCA, its editors, publishing staff, or officers
> >
> > For more information: http://www.ircaonline.org
> >
> > To Post a message: irca@hard-core-dx.com
> >
> >
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> IRCA, its editors, publishing staff, or officers
>
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>
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> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@hard-core-dx.com
>
>

Walt -

Belden 8215 is RG6 and is 75 Ohms, not 50 Ohms.

Chuck

High, Jim! I think you have little to worry about no matter what you
choose, electrically, at least. The more important issue is durability.
Depending on what I'm doing, I use different coax cables. Lengths
shouldn't be an issue, either. We experimented with lengths up to 1000' at
Grayland many years ago, and no difference was seen between (K9AYs, I
believe) at the ocean shore, or right next to the Grayland Motel, so don't
worry about that. Next is weight. When travelling, I'll use the super
thin RG174 coax (50 ohm), which fits nicely into the suitcase at minimal
weight. For cost, one can't beat 75 ohm RG6 coax which can be purchased
everywhere for pennies a foot. I've used that a lot over the years, and it
lasts well for a number of years outside. Now for more permanent weather
impervious coax, I've used a very heavy duty Belden 8215 milspec 50 ohm
cable. I was fortunate to buy military surplus brand new role of about
1000' or so years ago, and it's virtually indestructible, and can be buried
without worry about water infiltration, at least not for years. A local
DXer, Brian Chapel, gave a great idea, though, about what to use with
regular coax if one buries it on runs. He recommended buying a long run
(or runs that have been thrown out) of garden hose. What a great idea.
Then you simply run the coax through it from one end to the other. Don't
know if anyone has tried this, but if it remains intact, it should keep
coax dry and clean for many years, buried. Any other thoughts? 73,
Walt

On Sun, Jan 27, 2019 at 10:26 PM James Niven <jniven@austin.rr.com> wrote:

> I am curious as to what type of coax everyone uses for DKAZ antennas and
> also general international shortwave band listening dipoles?
>
> It's time to revamp my antennas and I want to use the right cable that will
> last for a while.
>
>
>
> I have read that RG-8U is good for long runs of a 100 to 150 feet, and if I
> was to bury my coax, which is the best pipe/conduit to use to bring my
> cables into the shack?
>
>
>
> thanks
>
>
>
> James Niven
>
> Austin, Texas
>
>
>
> _______________________________________________
> IRCA mailing list
> IRCA@hard-core-dx.com
> http://montreal.kotalampi.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@hard-core-dx.com
>
>

Burying a cable in a garden hose or the like almost guarantees much of the
cable will spend most of its life in water. It isn't trivial to keep it
dry. Conduit will allow easier replacement if it has to be run under an
area that you can't easily replace it in, or it can provide some physical
protection but otherwise I wouldn't bother. The many miles of coax and
other cables I have here are just buried in the earth without any issues in
the last 20 years, other than from a boy and his trencher...(me).

I would use flooded RG6 or similar for most rx only long term situations.

73 Don
VE6JY

On Mon, Jan 28, 2019 at 4:11 AM Volodya S <canswl@gmail.com> wrote:

> High, Jim! I think you have little to worry about no matter what you
> choose, electrically, at least. The more important issue is durability.
> Depending on what I'm doing, I use different coax cables. Lengths
> shouldn't be an issue, either. We experimented with lengths up to 1000' at
> Grayland many years ago, and no difference was seen between (K9AYs, I
> believe) at the ocean shore, or right next to the Grayland Motel, so don't
> worry about that. Next is weight. When travelling, I'll use the super
> thin RG174 coax (50 ohm), which fits nicely into the suitcase at minimal
> weight. For cost, one can't beat 75 ohm RG6 coax which can be purchased
> everywhere for pennies a foot. I've used that a lot over the years, and it
> lasts well for a number of years outside. Now for more permanent weather
> impervious coax, I've used a very heavy duty Belden 8215 milspec 50 ohm
> cable. I was fortunate to buy military surplus brand new role of about
> 1000' or so years ago, and it's virtually indestructible, and can be buried
> without worry about water infiltration, at least not for years. A local
> DXer, Brian Chapel, gave a great idea, though, about what to use with
> regular coax if one buries it on runs. He recommended buying a long run
> (or runs that have been thrown out) of garden hose. What a great idea.
> Then you simply run the coax through it from one end to the other. Don't
> know if anyone has tried this, but if it remains intact, it should keep
> coax dry and clean for many years, buried. Any other thoughts? 73,
> Walt
>
> On Sun, Jan 27, 2019 at 10:26 PM James Niven <jniven@austin.rr.com> wrote:
>
> > I am curious as to what type of coax everyone uses for DKAZ antennas and
> > also general international shortwave band listening dipoles?
> >
> > It's time to revamp my antennas and I want to use the right cable that
> will
> > last for a while.
> >
> >
> >
> > I have read that RG-8U is good for long runs of a 100 to 150 feet, and
> if I
> > was to bury my coax, which is the best pipe/conduit to use to bring my
> > cables into the shack?
> >
> >
> >
> > thanks
> >
> >
> >
> > James Niven
> >
> > Austin, Texas
> >
> >
> >
> > _______________________________________________
> > IRCA mailing list
> > IRCA@hard-core-dx.com
> > http://montreal.kotalampi.com/mailman/listinfo/irca
> >
> > Opinions expressed in messages on this mailing list are those of the
> > original contributors and do not necessarily reflect the opinion of the
> > IRCA, its editors, publishing staff, or officers
> >
> > For more information: http://www.ircaonline.org
> >
> > To Post a message: irca@hard-core-dx.com
> >
> >
> _______________________________________________
> IRCA mailing list
> IRCA@hard-core-dx.com
> http://montreal.kotalampi.com/mailman/listinfo/irca
>
> Opinions expressed in messages on this mailing list are those of the
> original contributors and do not necessarily reflect the opinion of the
> IRCA, its editors, publishing staff, or officers
>
> For more information: http://www.ircaonline.org
>
> To Post a message: irca@hard-core-dx.com
>
>

Thanks to Colin Newell for getting a west coast Kiwi SDR on-line today. I
compared my location (about 5 to 7 km away) to his. At 03:00, I noted that
mostly on 1590 he's hearing KLFE from Seattle, with many "The Answer" IDs.
For me, I'm also hearing weakly, a cochannel. Wasn't sure who it was until
I heard "94.3", which make this the Tilamook, OR True Oldies station, KTIL
which occasionally dominates the channel. All nice! 73, Walt