Balun for "F"type Connectors??????
amy...@personainternet.com
currently use RG-6 coax so I use a 4:1 matching tranformer at my
reciever and also at the Windom antenna in the attic.
I would like to setup a 90 ft random wire antenna outside using the
RG-6 and feed thru a ground block to the matching transformer into my
reciever. I'll need a 9:1 balun at the feed, but have not found a
ready made balun that accepts the "F" type coax connector. The ICE-180
and one currrently on eBay use a SO-239 connector and I have not found
connectors available to adapt to the RG-6.
Does any one know of a 9:1 Balun that accepts the "f" type connector?
Brian
Jim Hackett
<amy...@personainternet.com> wrote in message
news:1165603979.2...@16g2000cwy.googlegroups.com...
amyotte
"Jim Hackett" <hac...@pcpeople.com> wrote in message
news:pLjeh.1446$Gr2....@newssvr21.news.prodigy.net...
> There's a guy on eBay (RFJUNKIE?) who sells baluns which use F connectors.
>
>
Unfortunately he is out of stock and will not be making anymore. :(
Brian
--
Posted via a free Usenet account from http://www.teranews.com
amy...@personainternet.com
Jim Hackett wrote:
> There's a guy on eBay (RFJUNKIE?) who sells baluns which use F connectors.
>
Unfortunately he is out of stock and will not be making anymore. :(
Brian
>
>
>
Lisa Simpson
<amy...@personainternet.com> wrote in message
news:1165603979.2...@16g2000cwy.googlegroups.com...
amyotte
but the combo of pieces might do it. A balun with a "F" type connector would
be better but...
Would the following sound right?
I would come off the Balun that has a SO-239 connector with a (PL-259 to
PL-259) length of coax. It has a PL-259 to mate to the SO-239 on the balun,
(I think that is the male connector for the SO-239). I would then run it to
a SO239 to F male adapter. Use a F coupler to my RG-6 coax connector and
then through a ground block to a 4:1 matching transformer into my receiver.
Sound Right?
Brian
"Lisa Simpson" <no...@none.com> wrote in message
news:XGkeh.5924$Ye5....@tornado.ohiordc.rr.com...
--
RHF
http://www.geocities.com/qrp_baluns/
http://www.geocities.com/qrp_baluns/product.html
http://www.geocities.com/qrp_baluns/LMZ-50.html
http://www.geocities.com/qrp_baluns/LMZ-75.html
http://www.geocities.com/qrp_baluns/app-lmz-75.html
http://www.radioshack.com/search/index.jsp?kwCatId=2032058&kw=f+adapters&pg=1
http://www.radioshack.com/search/index.jsp?kwCatId=2032058&kw=rg6%20coax
~ RHF
.
.
. .
On Dec 8, 12:53 pm, "amyotte" <amyo...@personainternet.com> wrote:
> "Jim Hackett" <hack...@pcpeople.com> wrote in messagenews:pLjeh.1446$Gr2....@newssvr21.news.prodigy.net...
>
> > There's a guy on eBay (RFJUNKIE?) who sells baluns which use F connectors.Unfortunately he is out of stock and will not be making anymore. :(
>
> Brian
>
>
>
>
>
>
>
> > <amyo...@personainternet.com> wrote in message
> >news:1165603979.2...@16g2000cwy.googlegroups.com...
> >>I have a reciever that has 2 screw antenna connections, 300 ohm. I
> >> currently use RG-6 coax so I use a 4:1 matching tranformer at my
> >> reciever and also at the Windom antenna in the attic.
>
> >> I would like to setup a 90 ft random wire antenna outside using the
> >> RG-6 and feed thru a ground block to the matching transformer into my
> >> reciever. I'll need a 9:1 balun at the feed, but have not found a
> >> ready made balun that accepts the "F" type coax connector. The ICE-180
> >> and one currrently on eBay use a SO-239 connector and I have not found
> >> connectors available to adapt to the RG-6.
>
> >> Does any one know of a 9:1 Balun that accepts the "f" type connector?
>
> >> Brian--
> Posted via a free Usenet account fromhttp://www.teranews.com- Hide quoted text -- Show quoted text -
amy...@personainternet.com
RHF wrote:
> Follow the links . . .
>
> http://www.geocities.com/qrp_baluns/
>
> http://www.geocities.com/qrp_baluns/product.html
>
> http://www.geocities.com/qrp_baluns/LMZ-50.html
>
> http://www.geocities.com/qrp_baluns/LMZ-75.html
>
> http://www.geocities.com/qrp_baluns/app-lmz-75.html
>
> http://www.radioshack.com/search/index.jsp?kwCatId=2032058&kw=f+adapters&pg=1
>
> http://www.radioshack.com/search/index.jsp?kwCatId=2032058&kw=rg6%20coax
>
>
> ~ RHF
> .
Per my posting you tagged this reply to...
"Unfortunately he is out of stock and will not be making anymore. :("
http://search.ebay.ca/_W0QQfgtpZ1QQfrppZ25QQsassZrfjunkie
And the radio shack links are to "F" connectors.
Brian
Brian
<amy...@personainternet.com> wrote in message
news:1165603979.2...@16g2000cwy.googlegroups.com...
Why not build your own, and add whatever connector you like?
http://home.comcast.net/~markwa1ion/exaol2/z_transformers.pdf
Yodar
<amy...@personainternet.com> wrote in message
news:1165603979.2...@16g2000cwy.googlegroups.com...
amy...@personainternet.com
Yodar wrote:
> radio junkie offers one on ebay/
>
>
more.
Brian
amy...@personainternet.com
>
> Why not build your own, and add whatever connector you like?
>
> http://home.comcast.net/~markwa1ion/exaol2/z_transformers.pdf
Thanks for the link. The only thing stopping me where to buy 1 ferrite
coil. I went to order a ferrite core from CWS per the pdf above and it
was $10.25 USD plus shipping to Canada. Might as well get the balun on
eBay that uses a SO-239 connector for $15. I could open up the case,
remove this connector and replace my own.
Another option would be to add an SO-239 connector to my reciever but
then I heen to find a ground block that it could go thru or make one
up.
Brian
r2000...@hotmail.com
300 ohms for an HF radio?
For many reasons I doubt that.
Common balanced impedances are 150, ~450 and I have seen a few 600 Ohm
RF devices.
300 would be extreme to the limits.
What type receiver is this?
Terry
amy...@personainternet.com
>
> 300 ohms for an HF radio?
>
> For many reasons I doubt that.
>
> Common balanced impedances are 150, ~450 and I have seen a few 600 Ohm
> RF devices.
>
> 300 would be extreme to the limits.
>
> What type receiver is this?
>
> Terry
It is a Realistic DX-160. I had this model as a kid and saw the DX-160
on eBay near by and bought it.
Brian
dxAce
amy...@personainternet.com wrote:
The stuff I've seen on it indicates a 50 Ohm input impedence.
dxAce
Michigan
USA
amy...@personainternet.com
For the fun of it I will remove my 4:1 matching transformer between the
coax and the reciver connections and connect the coax right to the
screw terminals and see what happens.
Thanks
Brian
amy...@personainternet.com
That's weird I didn't notice any difference in radio reception at all
between the straight coax feed or thru the 4:1 matching transformer.
Brian
Geoffrey S. Mendelson
> coil. I went to order a ferrite core from CWS per the pdf above and it
> was $10.25 USD plus shipping to Canada. Might as well get the balun on
> eBay that uses a SO-239 connector for $15. I could open up the case,
> remove this connector and replace my own.
I have had good luck with toriods out of old PC power supplies. Some work fine,
some don't.
Another question I have is since you are receiving (this is an SWL list
after all), why won't a 4:1 balun from a TV set or FM radio work? Since you
are using RG-6 which is about 75 ohm, a 9:1 balun will match to almost 700 ohms,
but a 4:1 will match to 300. We could debate this for hours, but for a
receiving antenna, IMHO it may not make a difference at all.
> Another option would be to add an SO-239 connector to my reciever but
> then I heen to find a ground block that it could go thru or make one
> up.
Putting a PL-259 connector on RG-6 does not make a lot of sense, it
really was not designed for it. "F" to PL-259 adaptors exist, or since
you are inside, you could use a combination of "F" to BNC or RCA
and then to PL-259, they are far more common.
Another possibility is to connect a short jumper of RG-58 or 59 to an F
connector on one side and a PL-259 on the other. Use that to connect to
the balun and a barrel connector to join to the RG-6.
You could also take an indoor version 300 ohm to coax balun, the kind that
is held together with clips, open it up and rewind it to 9:1.
Geoff.
--
Geoffrey S. Mendelson, Jerusalem, Israel g...@mendelson.com N3OWJ/4X1GM
IL Voice: (07)-7424-1667 Fax ONLY: 972-2-648-1443 U.S. Voice: 1-215-821-1838
Visit my 'blog at http://geoffstechno.livejournal.com/
Geoffrey S. Mendelson
> That's weird I didn't notice any difference in radio reception at all
> between the straight coax feed or thru the 4:1 matching transformer.
I've read more and I'm really confused. A 90 foot random wire is unbalanced.
A DX-160 with a coax input is unbalanced. What's the balun for?
amy...@personainternet.com
I'm getting more confused the more I read replies and on the net and
I'm starting to wonder also.
But my reasoning is... I thought the input impedance of the reciever
at the terminals was 300 ohms. I am using a 4:1 matching transformer
at the antenna (currently a 70ft windom) to feed into 75 ohm RG-6 coax.
The 4:1 matching transformer at the reciever was to return the input
to 300 ohms.
I'm going to do some more reading up on this.
Brian
amy...@personainternet.com
Thanks dxAce
I did some digging and the DX-160 definitely has a low impedance
antenna input.
I was under the impression that it was 300 ohm.
I removed the 4:1 matching transformer that I installed at the reciever
which would bring the input back to about 75 ohms and saw no difference
in the signal so it may not be that important anyways in a recieve only
setup.
Not that I doubted you. :)
Brian
RHF
Theses may be the 'last-of-the-last' and may be . . .
some of the 'best -of-the-best' of RF Junkie's Baluns
for Shortwave Listeners (SWLs) designed for use with
standard 50 Ohm Coax Cable PL-259 Connector.
Shortwave Antenna Longwire Balun # LMZ-50
http://cgi.ebay.com/Shortwave-Antenna-Longwire-Balun-LMZ-50-QRP_W0QQitemZ150069112124
http://cgi.ebay.com/_W0QQitemZ150069112124
Note - The 75 Ohm "F" Connector Baluns are now all gone.
Shortwave Antenna Longwire Transformer Balun - # LMZ-75
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150055599076
So... When they are gone - Will there be any more ? ? ?
- - - Only RF Junkie Know For Sure !
http://myworld.ebay.com/rfjunkie/
iane ~ RHF
.
.
. .
On Dec 8, 12:17 pm, "Jim Hackett" <hack...@pcpeople.com> wrote:
> There's a guy on eBay (RFJUNKIE?) who sells baluns which use F connectors.
>
> <amyo...@personainternet.com> wrote in messagenews:1165603979.2...@16g2000cwy.googlegroups.com...
>
>
>
> >I have a reciever that has 2 screw antenna connections, 300 ohm. I
> > currently use RG-6 coax so I use a 4:1 matching tranformer at my
> > reciever and also at the Windom antenna in the attic.
>
> > I would like to setup a 90 ft random wire antenna outside using the
> > RG-6 and feed thru a ground block to the matching transformer into my
> > reciever. I'll need a 9:1 balun at the feed, but have not found a
> > ready made balun that accepts the "F" type coax connector. The ICE-180
> > and one currrently on eBay use a SO-239 connector and I have not found
> > connectors available to adapt to the RG-6.
>
> > Does any one know of a 9:1 Balun that accepts the "f" type connector?
>
> > Brian- Hide quoted text -- Show quoted text -
bpnjensen
> For One and All,
>
> Theses may be the 'last-of-the-last' and may be . . .
> some of the 'best -of-the-best' of RF Junkie's Baluns
> for Shortwave Listeners (SWLs) designed for use with
> standard 50 Ohm Coax Cable PL-259 Connector.
<snips>
Is he going out of business? I did not a see a note anywhere...
Maybe he is just liquidating a previous deisgn in favor of a new
design, for which he is tooling up?
BJ
amy...@personainternet.com
Per an email I had from RFjunkie he will no longer be making Baluns.
Once they're gone they're gone.
Brian
bpnjensen
will no longer be making Baluns.
> Once they're gone they're gone.
>
> Brian
That's too bad - he had a good product at a bargain. Must have found a
more lucrative business...or got tired of making them.
RHF
On Dec 12, 9:31 am, "bpnjensen" <bpnjen...@yahoo.com> wrote:
> amyo...@personainternet.com wrote:> Per an email I had from RFjunkie hewill no longer be making Baluns.
>
> > Once they're gone they're gone.
>
> > BrianThat's too bad - he had a good product at a bargain. Must have found a
> more lucrative business...or got tired of making them.
Often an advocation is simply not a profitable business :
While the time spent may be interesting and enjoyable;
it does not yield and income equal to the investment of
our time, energy and resources.
i wish rf junkie well in all his future endevors ~ RHF
.
.
. .
RHF
Somewhere some how RFJunkie has found another one of
his LMZ-75 type Longwire Antenna Impedance Matchers
with the 75 Ohm "F" Connector.
This appears to be an early model of the LMZ-75
Longwire Antenna Impedance Matcher
http://cgi.ebay.com/Shortwave-Antenna-Longwire-Transformer-Balun-F-conn_W0QQitemZ150076277164
http://cgi.ebay.com/_W0QQitemZ150076277164
FWIW - Recently a 'used' pair of RF Junkie's Matching
Transformers sold on eBay for $42+$15S&H.
that's all folks ~ RHF
.
.
. .
= = = On Dec 11, 4:30 pm, "RHF" <rhf-newsgro...@pacbell.net> wrote:
> For One and All,
>
> Theses may be the 'last-of-the-last' and may be . . .
> some of the 'best -of-the-best' of RF Junkie's Baluns
> for Shortwave Listeners (SWLs) designed for use with
> standard 50 Ohm Coax Cable PL-259 Connector.
>
> Shortwave Antenna Longwire Balun # LMZ-50http://cgi.ebay.com/Shortwave-Antenna-Longwire-Balun-LMZ-50-QRP_W0QQi...http://cgi.ebay.com/_W0QQitemZ150069112124
>
> Note - The 75 Ohm "F" Connector Baluns are now all gone.
> Shortwave Antenna Longwire Transformer Balun - # LMZ-75http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150055599076
>
> So... When they are gone - Will there be any more ? ? ?
> - - - Only RF Junkie Know For Sure !http://myworld.ebay.com/rfjunkie/
>
> iane ~ RHF
> .
> .
> . .
>
> On Dec 8, 12:17 pm, "Jim Hackett" <hack...@pcpeople.com> wrote:
>
>
>
> > There's a guy on eBay (RFJUNKIE?) who sells baluns which use F connectors.
>
> > <amyo...@personainternet.com> wrote in messagenews:1165603979.2...@16g2000cwy.googlegroups.com...
>
> > >I have a reciever that has 2 screw antenna connections, 300 ohm. I
> > > currently use RG-6 coax so I use a 4:1 matching tranformer at my
> > > reciever and also at the Windom antenna in the attic.
>
> > > I would like to setup a 90 ft random wire antenna outside using the
> > > RG-6 and feed thru a ground block to the matching transformer into my
> > > reciever. I'll need a 9:1 balun at the feed, but have not found a
> > > ready made balun that accepts the "F" type coax connector. The ICE-180
> > > and one currrently on eBay use a SO-239 connector and I have not found
> > > connectors available to adapt to the RG-6.
>
> > > Does any one know of a 9:1 Balun that accepts the "f" type connector?
>
> > > Brian- Hide quoted text -- Show quoted text -- Hide quoted text -- Show quoted text -