[W2CRA] CRA: 375 Status

Sat Aug 8 21:48:44 EDT 2020

Kurt  & CRA Members,

The tech team and I have been working toward that end but slowly due to personal availability and resources.
We NEED to do Kingwood before the opportunity passes - the others can wait for the opportunity.

One issue that needs to be politically resolved is at-will access to the new building.  Currently I have to contact John
Silliman in advance and arrange to get the keys; he's currently on vacation.

Second, we need to remove everything currently occupying space in the new cabinets and lay out for the future: we only
get ONE shot at this - there is no such thing as temporary.

We also must be SURE to keep the "ham" out of the look and feel; it needs to be MORE professional than the County stuff.

Follows an annotated version of the attached file:

 - Cherryville Relocate to new cabinets
	NOTE: Rack and Stack Plan needed PRIOR to equipping cabinets in standby building.  
		==Len looking into this.  Need access to make precise measurements.
	Can we consolidate to 1 cabinet or do we require 2?
		==Unknown at this time
	Needed soon - Who do?
		==Len
	List at end

- Install remote receiver package (depends on rack & stack of new cabinets)
	In standby building
		==The new building, in the new cabinets
	Documented separately
		==Doing
	Currently waiting to be wired
		==By Bill
	Need amplified CATV splitter with custom cables (FM to Mini UHF M)
		==Not ordered
	Need filter (bandpass cavity) added to County UHF receive antenna.
		==Must be coordinated with John Silliman
	Local 2M Rx uses tap off of County high band combiner stack
		==Needs to be tested and approved otherwise SOL: no link Rx antenna.
==NOTE: We will need ~120' of 1/2 " superflex for jumpers from the trapeze to our cabinets.  Connectors also.

- Move ALL equipment out of blockhouse; stored, standby and active
	NOTE: EVERYTHING MUST GO!
	NEED to start selling off surplus stuff before County evicts us.
		==In progress.  Slightly over 1/2 way done.
		==Being stored in Len's barn.
		==We need to label stuff we're going to keep.

 - New 147.375
	Exciters on 4U shelf: CDM750 main, CM/Radius backup
		==Partial
	Amplifiers: Henry main, GE (one in use) or Motorola backup
		==partial
	Backup switching - ONE switch – dummy proof – moves audio/ptt AND amplifier out together to filters
		==provides signal to controller 
		==Currently under construction
	Filtering
		300 W pass cavity
		==perhaps
		100W notch on 975
		==Probably
		top of cabinet
		==need mounting
	A MAJOR project: Documented separately

- 444.85 Cherryville (R/S dependent)
	Configure MTR2000 and Duplexer and test
		==Programming, tuning and testing required.  Proper test equipment unavailable
	Install in cabinet at standby transmitter building
		==Depends on rack and stack
		==Measurements needed
	Full test req. incl desense
		==Proper test equipment unavailable
	Recover SComm  7k from blockhouse

So, in order:
	Clean out cabinets,
	Accurately measure cabinets
	Lay out and mark cabinets
	Mounts for filters/cavities
	Install 444.85
	Wire remote Rx rack
	Test 420 MHz filter with County
	Install Link Rx, Voter, Controller(s), Line interface, 12V power external
	Plan and install in-cabinet 12V and circuit breaker / distribution system
	Install exciters, interstage filters (need 2nd one), Amplifiers, AB switch, Final filters
	????????

So - Who can and is willing to follow instructions as provided WITHOUT disagreement or second-guessing or
re-engineering?

Bill - WB1GOT

On Sat, 8 Aug 2020 09:55:41 -0400, you wrote:

>
>It is my opinion that the control site has to be the weakest link in our repeater network.  
>We need to come up with a plan to eliminate the dependency on on this site and I believe that this should be a top priority.  
>We should revisit the plans we discussed several years ago now and set some actions.  
>Unless I'm convinced differently,  we should refocus our attention from remote site packages to this.
>-Kurt, KR2C

>-------- Original message --------From: William Powell <whp at att.net> Date: 8/8/20  7:50 AM  (GMT-05:00) To: CRA Reflector <w2cra at mailman.qth.net> Subject: [W2CRA] CRA: 375 Status All,The 375 repeater is down due to loss of AC power at the control site.We get power via an extension cord to the basement of the house powering an Astron 12V supply maintaining a 150 AHbattery that powers the link receivers, voter, controller and phone line interface.On my way this afternoon I observed that at least one house appeared to have power - unsure about the rest.OR . . . it could be:Loss of AC from the street, Service disrupted / disconnected, extension cord unplugged, power supply issues, voterissues, controller issues, phone line interface / phone line.The board needs to come up with contingency plans and implement them.I "might" be able to take a look early next week.  In the meantime there is 444.85, 147.015, 224.120 and 446.475.Bill - WB1GOT-- This email has been checked for viruses by Avast
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