LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #14   Report Post  
Old June 2nd 06, 08:08 PM posted to rec.radio.shortwave
RHF
 
Posts: n/a
Default Grove Shortwave (SW) Pocket-Tenna

GW,

The Grove Shortwave (SW) Pocket-Tenna Antenna was
http://www.grove-ent.com/pocket-tenna.html
mainly designed by Grove for Hand Held Scanners or
"All Band" {HF-VHF-UHF} Hand Held Radios which
simply had a small short Flexible Whip {Rubber Ducky}
Antenna often connected to them using a BNC Connector.
http://groups.yahoo.com/group/Shortw...a/message/9935

First the BNC Connector - Designed for Hand Held Scanners and
Radios that often use them as an Antenna Connector and Input.

Second the Length {Size} - Most of these Hand Held Scanners
and Radios will OverLoad when a Larger Long Wire Antenna :
Say a Dipole 'cut' for the 31 Meter Band is used with them
rendering them useless.
- - - 31 Meter Dipole Antenna 49 Feet Tip-to-Tip.
I would suspect that Grove did a few Trial-and-Error 'design'
{Prototype} Antennas and found that about Twenty Feet was all
that most of these Hand Held Scanners and Radios could handle
before 'Size' {Length} caused a problem with "OverLoading"
the Radio's RF Front-End.
Note - This is about the same length as the 23 Foot Portable
Reel {Roll-Up} Shortwave Antennas that come with, or can be
purchased for most 'portable' AM / FM Shortwave Radios.
Again many of these 'portable' AM / FM Shortwave Radios will
"OverLoad" when a Larger Long Size Antenna is used with them.

Third - What to call {Label} this Antenna :
# 1 - It is End-Fed. {End-Fed}
# 2 - It is made from a single piece of Coax Cable {Liner}
and designed to have Two Equal Sections made-up of the Coax
Shield and Exposed Inner Conductor. {Balanced Mono-Pole}
# 3 - Not Really designed to be Resonant at any Shortwave
(HF) Band and used Across the Shortwave Bands. {All-Band}
What's-In-A-Name : End-Fed Liner Mono-Pole All-Band Antenna ?

TESTING - Again in a Side-by-Side trail it was my observation
using the 20 Foot Grove Shortwave (SW) Pocket-Tenna -vice-
23 Foot Portable Reel {Roll-Up} Shortwave Antenna with a
Grundig Satellit 800 Millennium Radio that the Grove had
as good a signal with less noise then the Roll-Up.
* Roll-Up connected via the Red HI-Z Terminal No-Ground.
* Grove connected via the SO-239 LO-Z Jack No-Ground.

THE QUESTIONS :
? Is the Grove a Great Shortwave Antenna ? -NO-
? For It's Intended Use - Does the Grove Antenna Work ? -YES-
? Is the Grove Worth $20 ? -YES and NO-
-Yes- Price about Right for those who simply want to Buy It to Use.
-No- Easy to Do-It-Yourself : If you have the Skills and Knowledge
plus the Tools and Materials to build it.

AGAIN THE [MY] BOTTOM LINE :
The Grove Shortwave (SW) Pocket-Tenna
http://www.grove-ent.com/pocket-tenna.html
Simple enough to build-it-yourself to play around with
and low cost enough to simply buy-it-and-try-it.

- - - In ,
http://groups.yahoo.com/group/Shortw...a/message/9931
- - - "Greg W:-)" onegammyleg@... wrote:


iane ~ RHF
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
My Tenna didn't work so well!!! Burr Shortwave 12 March 5th 05 12:19 AM
FS: Alliance tenna rotor Joe Swap 0 January 10th 05 03:06 AM
Tenna Phase III schematic needed D & B Rude Shortwave 0 October 24th 04 06:09 AM
SELECT A TENNA AM DX MARVEL ONLY $5.00 ON BID NOW LAST FEW MOMENTS blueglaz113 Shortwave 25 March 30th 04 10:05 AM
SELECT A TENNA AM DX MARVEL ONLY $5.00 ON BID NOW LAST FEW MOMENTS blueglaz113 Swap 4 March 30th 04 06:33 AM


All times are GMT +1. The time now is 12:40 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017