Hey Paul,
Happy 80th anniversary .
I started with 13 years old this fantastic hobby.
Nice to hear you are still active !!...What an inspiration !!!
73 and take care.
Doug, CO8DM
- Original Message -
From: "PAUL M ELLIOTT"
To:
Sent: Thursday, January 19, 2017 10:34 AM
Subject:
Hi Topbanders !!!;
Finally I got an FCP isolation transformer for 160m...I am planning install a
160m Inv L + FCP...I am wondering if I can add 80m to this system.
I know the 160m FCP isolation transformer only work on 160m but maybe adding a
relay is possible to work on 80m.
Any idea?
Thanks
Hi,
I have a 5 elem 6m yagi...the boom is 15 ft long...
I have been reading about the Waller Flag...both version, Vertical and
Horizontal.
I would like add the WF to my 6m yagi or a single WF (one loop)...I know few
hams around the world did it and there is no interaction. (PY1RO, PY2XB,
etc)
Hi,
What is the Phone segment for EU stations on 75 meters?
I am tunning my 75/80m antenna for WAE SSB... it is very narrow (100 Khz), so,
I want to know the most active segment during contest...Resonance (SWR 1:1) on
3625 Khz now...Is it Ok or to low?...maybe can work split...
Thanks,
Doug,
Ohhh, very sad news.
I have been reading his last message on topband reflector few days ago.
RIP Milt !.
73 Doug, CO8DM
-Mensaje original-
De: Topband [mailto:topband-boun...@contesting.com] En nombre de Jon Zaimes
Enviado el: jueves, 09 de junio de 2016 23:26
Para: topband@contesting.
Hi,
I would like try the Reverse Feed System (N4KG antenna) on 80m.
I have a 50 ft GROUNDED tower (isolated from the guy wires) and similar size
of Rohn 25G.How much top loading I need If radials (4) are connected at 15
ft?...
I have an spiderbeam on top but this antenna does not add an
Hi,
I am trying to work on 160m (also on 80m) from a city lot.
I have been reading about half slopers in the ARRL Wire antenna classics B
(chapter 7).
I have a 50 ft grounded tower available and can run an sloping wire 60 ft
(1/4 wl on 80m) then add an 80m trap and more wire to work 160m.
Any
Hi,
Need some ideas from your side...
I am trying to find a good solution for my 160/80m antenna.
I am thinking about some kind of Inv L with an 80m trap as a radiator for both
bands.
But, what about the counterpoise...Unfortunately in my small city lot I can´t
install radials and I can´t get
- Original Message -
From: "Douglas Ruz (CO8DM)"
To:
Sent: Monday, February 01, 2016 2:49 PM
Subject: Topband: How can I tune an FCP without isolation transformer ???
Hi Topbanders,
I am building an Inv L for 160m with FCP.
As i can get an isolation transformer i will add a series
Hi Topbanders,
I am building an Inv L for 160m with FCP.
As i can get an isolation transformer i will add a series loading coil (about
17uH) to my FCP and then an RF choke.
How can i tune my FCP + Loading coil ??...i need a balance between FCP+Loading
coil and the Radiator.
Can i build 2 FCP
Hi Topbanders,
I have been reading the article "Compact 4 squares and other ways to get gain
on 40, 80 and 160m" written by K9RS and N9NB. It is very interesting.
Someone on the list with experience can answer few questions off the list.
I would like install something like that on low bands (mo
Hi,
Read this article written by Rudy, N6LF:
http://rudys.typepad.com/ant/files/antenna_array_single_support.pdf
Maybe you can find your solution.
GL,
73Douglas, CO8DM / T49A
Founder of T48K
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones f
Hi Rudy,
Maybe i am wrong but i think Jorge, CX6VM/CW5W has something similar for
160m.
Try contact him and ask about his experience.
I think he is member of this list.
GL with the project.
73Douglas, CO8DM / T48K
"No creo que haya alguna emoción más intensa para un inventor que ver al
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna de
sus creaciones funcionando. Esa emoción hace que uno se olvide de comer, de
dormir, de todo." - Nikola Tesla
_
Topband Reflector Archives - http://www.contesting.com/_topband
i am now on 1827.5 Khz
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
- Original Message -
From: "Dou
From: "Jeff AC0C"
To: "Douglas Ruz (CO8DM)" ;
Sent: Saturday, December 05, 2015 11:22 PM
Subject: Re: Topband: CO8DM on 1861 Khz CW...
Douglas,
You may want to move up a bit more. There is an AM broadcast on 1860.
73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-
Hi,
I am calling on 1861 Khz...only 100 watts.
If someone would like to try.
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna de
sus creaciones funcionando. Esa emoción hace que uno se olvide de comer, de
dormir, de todo." - Nikola Tesla
__
I heard N4OGW from MS last night...
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
- Original Message -
From: "Peter Sundb
Congratulations Marco ...good job !!!
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
- Original Message -
From: "Marco
Hi Topbanders,
I have been reading about Waller Loop in the last couple of days...it is an
amazing antenna for low bands.
I tried answers few questions but i can´t...need help from the list:
About building...can i use aluminum tubing to build the loop and the 30ft
boom ???...if i can use alu
t;Petr Ourednik"
To: "Douglas Ruz (CO8DM)" ; ;
Sent: Monday, August 31, 2015 12:23 PM
Subject: Re: Topband: Fast relay ???
Doug
I am going to ship you the relays for free. Just let me know to address
and phone number for parcel service.
73 - Petr, OK1RP
On Mon, Aug 31, 2015, a
Martin, Tom and all members of the list,
The AS RXFEP is very nice but it is very expensive.
I prefer the KD9SV modify by Martin, OK1RR...it is very easy to build but i
need only the relays...someone can help me to get those relays ???...are
they available at digikey or mouser ???
The circui
Tom and all members of the list thanks for your ideas and time .
I have a plan B:
I added a BNC female connector in the rear panel of my old Yaesu, FT747 (It
is an FT80C, the commercial version with metallic chassis) few months ago.
I was using that BNC to feed an SDR receiver using the s
Tim,
Yes, you are absolutely right
Thanks,
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
- Original Message -
From
Hi Martin, OK1RR,
I tried email direct to you but it was not possible. I am sorry about the
other member of the list.
It is about the FRONT END SAVER relays:
I have two different relays here and i would like to know if i can use one
of them in
your design:
I have HFD2 Subminiature DIP rela
Hi,
Originally, the FCP is connected in the center (33ft each side for
160m)...Did somebody try connect it at one END ???.
Probably i will install my vertical in a corner of my property and some
neighbours houses do not allow connect the FCP in the middle.
any idea?
Thanks,
73Douglas,
I totally agree with you Steve...i will try the flag first without preamp
and see how it play.
Actually, i will have a short coax run...about 30 or 40 ft...
73Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emo
essage -
From: Tim Shoppa
To: Douglas Ruz (CO8DM)
Sent: Thursday, August 27, 2015 10:46 AM
Subject: Re: Topband: RX antenna ???
Any sort of loop you can put in, will be a superior receiving antenna to
using your transmitting antenna.
Most of the simple loops have a terminating
ra un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
- Original Message -
From: "N2TK, Tony"
To: "'Douglas Ruz (CO8DM)'"
Sent: Thursday, August 27, 2015 10:27 AM
S
Hi,
I will install a vertical antenna for TX on 160, 80 and 40m.
I want build a Receiving antenna for those Low Bands.
I live in a city lot, so, i can not install beverages...i have been reading
in the Low Band Dxing about Receiving Loops and i like the Rectangular loop
developed by EA3VY and
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