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Locked Re: Loop Details
Michael, I must say that is one very impressive loop!!! You can be sure I'll be consulting your drawings and pictures the next time I build an HF loop. This is definitely one to point people to
By qrpbear · #190 ·
Locked Fractal antenna
Does anyone has a schematics for a VHF/UHF multiband fractal antenna. I'm very interesting to build one. Thank's.
By Lupu Valerian <vali_lupu@...> · #189 ·
Locked Re: Loop Details
Thanks Steve, that is most kind of you and much appreciated! Glad you liked it and hope others will gain some ideas for their own loop or just to copy mine. Best regards! Michael.
By Michael Stevenson <portstevos@...> · #188 ·
Locked Re: Loop Details
Thanks Al, I think that Steve Greenfield has created a folder for me which is very kind of him, so everything is under control. I hope everyone gains some good info and ideas for creating their own
By Michael Stevenson <portstevos@...> · #187 ·
Locked Re: Loop Details
Very nice! I created a folder called "Remote_Tuned_Loop" and moved them all into it. It will make it much easier to follow for people looking into the files in the future. Steve
By Steven Greenfield AE7HD · #186 ·
Locked Re: Loop Details
Michael, very nice job on the antenna. I especially like the motor control for the variable cap. This allows you to tune the antenna yet have it away from all local noise sources. On the files, I
By als_radios <aburzynski@...> · #185 ·
Locked Loop Details
Hello everyone, Full construction details, diagrams and photos have now been uploaded to this group's web site in the Files section under the titles of: Loop Construction 1 Loop Construction 2 Loop
By Michael Stevenson <portstevos@...> · #184 ·
Locked Re: Multi turn Mag. loop
Garth, For a _tuned_ loop increasing the number of turns moves the tuning range lower in frequency. For any given frequency, the single-turn tuned loop will have a larger diameter (and thus greater
By qrpbear · #183 ·
Locked Multi turn Mag. loop
I am looking for info as to a 3 or 5 turm Magnetic loop.(using 1.0" hardline for outdoor stabilty) along with the usual tuning cap. Will it produce any better results when campared to the same
By Garth M.Conover <ewrtsa@...> · #182 ·
Locked Re: LW and MW Loop antenna
John, That makes sense. At MW especially the additional capacitance could be problematical. At lower frequencies it might actually prove beneficial to some degree. 73, 'Bear' NH7SR wrote:
By qrpbear · #181 ·
Locked Re: LW and MW Loop antenna
I was treating the telephone wire as if it was one cable. Since I was establishing the correct length of wire by trial and error it was easier that way. I also theorized that the four wires were so
By john nelson <jnelson123_us@...> · #180 ·
Locked Re: New Loop Antenna
Hey Bear, Yes sir, you bet I did and it works great, also used the relay to switch in the second tuning gang and additional 450 pf of fixed capacitance ( a total of 1350 pf) to tune down to below 2.3
By Michael Stevenson <portstevos@...> · #179 ·
Locked Re: New Loop Antenna
Michael, Hey! It's finished! I am really looking forward to seeing the pictures. Did you use the remote volume control motor for tuning? 73, 'Bear' NH7SR <portstevos@t...> wrote: and in use. It's
By qrpbear · #178 ·
Locked Re: LW and MW Loop antenna
John, Very impressive looking antenna. One question... Why did you connect the 4-conductor cable wires in parallel? I assume to resonate the loop. I am thinking of something similar but series
By qrpbear · #177 ·
Locked New Loop Antenna
My new magnetic loop antenna for shortwave is now fully finished and in use. It's performance is extremely impressive and out performs my 15 and 17 metre longwires. This is an active loop with a
By Michael Stevenson <portstevos@...> · #176 ·
Locked LW and MW Loop antenna
I just posted a picture of my long wave and middle wave loop in the pictures section. The actual antenna was made entirely of salvaged materials for the exception of the brass bolts and nuts in the
By John Nelson <jnelson123_us@...> · #175 ·
Locked Re: Installation of DSL = buzzing on AM band 500's to about 1000kHz
Hi: I'm sorry I am no help re your problem... but I will be reading the mail as I am curious about your EMI situation and the DSL installation. Does your phone line come to your house via buried
By Jim Dunstan <jimdunstan@...> · #174 ·
Locked Installation of DSL = buzzing on AM band 500's to about 1000kHz
Installation of DSL has caused terrible overnight buzzing from the 500's to about 1000kHz. Phone company made adjustments at street and house. Buzzing on portable radios re-radiated in vicinity of
By Tom,webmaster,indigotalkradio <indigotalkradio@...> · #173 ·
Locked Re: REALLY dumb question from a non radio guy.
It probably means the loop is not really tuned to null; instead it is tuned -near- null, and is putting out just enough at 180 out of phase with the internal ferrite to cancel out the signal
By Steven Greenfield AE7HD · #172 ·
Locked Re: REALLY dumb question from a non radio guy.
I am sure there is no 'auto disconnect' .... most receivers with the ferrite antenna that have external antenna connections will operate both at the same time. There are a few exceptions .... for
By Jim Dunstan <jimdunstan@...> · #171 ·