Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco Model 70 antenna
#1

Is a long wire antenna directional?
Does the signal enter the antenna at right angles or straight on?
Would a circular long wire antenna, say 40' or more longer pull in signals from all directions?
Would a coaxial cable from the outside to the inside terminating at the radio be best to eliminate house generated interferences?
What size coaxial cable would be recommended if at all, i.e., RG8?
#2

Hi and welcome to the Phorum.

A long wire antenna is directional but radio waves are hitting the wire from all directions, the ones from either end generate the strongest signals depending on many factors.

Circular antennae seem to have the all around good result.

Coax is generally used to transfer the signal captured on the antenna to the radio input. The grounded shield will reduce noise interference.
Here's a link to a large thread with examples of DIY antennae used by Phorum members. One of the posts I explain my Ethernet Antenna where I used six feet of ethernet cable to make a 48 foot antenna coiled up in the radio cabinet.
https://philcoradio.com/phorum/showthrea...et+antenna
#3

Thank you Rob.
Is your "Ethernet Antenna" as sensitive as a long wire and what shielded cable do you recommend for the lead in from the long wire?
Your antenna will work in my 1937 Zenith console as the cabinet is large, however the Philco 70, a cathedral cabinet is much smaller.
Keith




Users browsing this thread:
[-]
Recent Posts
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM
Philco 610B oscillator wiring
Thanks David! I do have that same later prodution model 610 schematic. I've also studied the Philco service bulletins fo...Tubester — 08:12 PM
Philco 610B oscillator wiring
Some info from Beitmans says late production. David   David — 06:06 PM

[-]
Who's Online
There are currently 2444 online users. [Complete List]
» 2 Member(s) | 2442 Guest(s)
AvatarAvatar

>