Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: IC-765 on low band receive antenna?  (Read 2951 times)
W7ARX
Member

Posts: 453




Ignore
« on: September 01, 2013, 10:35:25 AM »

ANyone ever use the IC-765 on low bands with a receive antenna?  What hook up did you use as this radio does not have a selector for regular antenna to receive antenna?
Logged
W1VT
Member

Posts: 841




Ignore
« Reply #1 on: September 01, 2013, 11:00:59 AM »

According to page 12 of the IC-765 instruction manual, connectors are provided for breaking the receive connection between the antenna tuner and the receiver circuit--you could put a protection circuit and an receive antenna switch between those connectors. You want to look at section 4-7

http://www.aytechnologies.com/TechData/RIP-1.pdf
Here is a commercial protection circuit you can buy.  A receive antenna can actually pick up a watt or more of signal from a nearby transmitting antenna--more than enough to burn out an unprotected receiver.

Zack Lau W1VT
Logged
W7ARX
Member

Posts: 453




Ignore
« Reply #2 on: September 01, 2013, 06:16:45 PM »

Hi Zack
Yeah, I saw that but no mention as to a methodology of using it.  I suspect one would have to use something like the DX Engineering RTR-1 so you can switch the receive antenna in or out, otherwise, as it stands, it would be in line all the time and that isn't desireable.
Logged
W0BTU
Member

Posts: 1703


WWW

Ignore
« Reply #3 on: September 01, 2013, 07:24:08 PM »

When I only used one separate RX antenna, I just used a mini SPDT toggle switch. Later, I used 3 of those. Now I use a rotary switch that controls relays. The photo and schematic is on http://www.w0btu.com/Beverage_antennas.html

If you can drill and solder, you can make one. It's simple.
Logged

W7ARX
Member

Posts: 453




Ignore
« Reply #4 on: September 02, 2013, 03:34:27 AM »

Yes, that would work to swtich in a rcv antenna, but risky if you are concerned about rf getting back into the rcv antenna to the radio during transmit.  Have to isolate the two completely.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!