开云体育

Hi Larry:

After you removed the band-pass cavity, did you re-tune the rest of the cavities? That should reduce the VSWR.

Harold

The monthly meeting will start at 7PM Teusday 25th of February,2020
If you come a bit early, we will be testing a 17 year old for his Technician License. He will be there with his Father. Let's welcome him the the VFW group and at the same time, show a little respect for a 1st time licensee.. VE's should be able to cover it all with minimum disruption.

The repeater saga continues. The VHF repeater? has a spurious at dawn and dusk. Unfortunately ALLSTAR Blind Hams Talk Group gets the white noise we generate. Literally, moving anything regarding the repeater causes the transmitter to go into self oscillation. I worked on th erepeater from 5pm to past Midnight.

The transmitter cold in a 50ohm dummy load works perfect. Out Antenna and line is 1.02 to 1. The problems are in the 1964 vintage Duplexers. Specifically the 1st cavity, a bandpass. Right now we are running without it. The Transmitter SWR into the 2nd cavity is 2:1.. it works, BUT I'm concerned after heating it will go spurious and we will get complaints again from AllStar people.

I have QUOTES from both TELEWAVE and TX-RX for new duplexers. Shipping is awful as they are crated.. RX-RX shipping is $225.. They are only 90 miles from my Grandkids. In Angola, NY.. About 1200 miles. 2-3 days trip. A possibility is to order them so we can pickup at Dayton..

At this point there is not enough money in the treasury to buy a pair..BTW- both TX-RX and TELEWAVE were within 4 dollars of each other.
Our current duplexers are WACO and a guestimate is thay are 1970 vintage. The service manual is type written and dated 1964.

I am upset with myelf as I thought I could add a Z matcher , and tune it to reduce SWR from the Transmitter and clear up the spurious. Because it was hot to start with it went bonkers and couldn't be tamed till We turned it off for over an hour. That cause the repeater to miss the net.

Literally the transmitter configuration is so sensitive that adding a watt meter will allow it to work or not.? We have both repeaters on the same antenna. The second antenna is fed with RG8X which is substandard for? UHF operating. We have coax runs going nowhere. We need a number of work parties. and a plan of action.

Maybe we'll just leave my watt meter in line till we get new duplexers. Duplexers are $1776 delivered. Hence the reason to promote our Dead of Winter Extravaganza next Saturday..?? Hoping all is well with everyone.

Larry W8LM..




?

-- 
Noah Webster

Founding Educator

The most perfect maxims and examples for regulating your
social conduct and domestic economy, as well as the best rules of morality and
religion, are to be found in the Bible. . . . The moral principles and precepts
found in the scriptures ought to form the basis of all our civil constitutions
and laws. These principles and precepts have truth, immutable truth, for their
foundation. . . . All the evils which men suffer from vice, crime, ambition,
injustice, oppression, slavery and war, proceed from their despising or neglecting
the precepts contained in the Bible. . . . For instruction then in social, religious
and civil duties resort to the scriptures for the best precepts.

(Source: Noah Webster, History of the United
States, “Advice to the Young” (New Haven: Durrie & Peck, 1832), pp. 338-340,
par. 51, 53, 56.)