Re: [BVARC] Power supply

[Gayle Dotts via BVARC]

Thanks Gary,

Working with it tonight...Home Depot run produced a volt-ohm meter per your
suggestion. I'll run CW and investigate further.  Was on the roof all
afternoon with my antenna chasing down RF reported in my signals, glad to
say I found the culprit and didn't fall off the roof.

73
Gayle Dotts
KF%LVZ

On Sat, Apr 8, 2017 at 7:53 PM, Gayle Dotts  wrote:

> Thanks will do.
>
> On Sat, Apr 8, 2017 at 7:27 PM, Gary Sitton via BVARC 
> wrote:
>
>> You need to measure the voltage as I indicated with the rig in CW mode
>> into an antenna or whatever you used before when you measured the power
>> output.  Now a cheap but accurate digital volt-ohm meter will cost as
>> little as $10.  A small investment in your hobby I think.
>>
>> Gary, K5AMH
>>
>> Sent with AquaMail for Android
>> http://www.aqua-mail.com
>>
>> On April 8, 2017 5:27:52 PM Gayle Dotts via BVARC 
>> wrote:
>>
>>> Hi Gary,
>>>
>>> I don't have anything to measure the actual load on the FT-920,
>>> unfortunately no dummy load available either. Bought the radio used and
>>> without a power chord.  I ordered a Yaesu power chord thru MFJ and it came
>>> with two inline fuses one on the positive side one on the negative side,
>>> both rated at 20A and look good.  Question If I might ask still is
>>> MFJ-4225MV@25A . too under powered or acceptable barely but could
>>> be better.  Thank you for your input I appreciate it!
>>>
>>> 73
>>> Gayle Dotts
>>> KF5LVZ
>>>
>>> On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC 
>>> wrote:
>>>
 Gayle:

Measure the actual under load (100 W. CW) voltage
 at the back of the FT-920.  Faulty inline fuse holders
 or connectors, and wiring losses can cost you 1/2 v. or
 more.  You need a full 13.5 to 13.8 VDC at the back.
 Since power to a R Ohm load is V*V/R, a relative power
 line voltage drop will result in ~twice a relative power
 loss for a fixed R.

 73s,
 Gary Sitton, K5AMH
 gasit...@comcast.net

 On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:

 Got a question on power supply for my Yaesu FT-920.

 The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W)
 @22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  Is
 this MFJ will power the Yaesu but I don’t really see the 100W on output Tx,
 although the amp meter on the MFJ shows 6-12A while transmitting running
 low to high on the RF PWR knob on the FT-920.  Do I need to increase the
 power supply??  Please advise.


 Thanl you,

 Gayle Dotts

 KF5LVZ


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Re: [BVARC] Power supply

[Rick Hiller -- W5RH via BVARC]

Gayle...you asked aboutthe PS.

Specs -
Current out -- continuous 22 Amps at 13.8 Vdc
Front Panel Adjustable Voltage (9-15 Vdc)

22A continuous is plenty for 100 W xcvr.

Adjust the DC Volt knob for a reading of 13.8V on the meter.

Maybe you are meassuring in the AM mode...bet your rig goes to 50 W max in
AM mode.

Key down CW, max smoke should be 100 W+ into a dummy load or into a matched
>1.5:1 antenna system.

If you do not have a dummy load then you have no knowledge of the Z that
the xmitter output is seeing, so the output is dependent on the Ant/TL Z.

What does the SWR meter in the rig read?   Close to 1:1?if higher than
1.5:1 then the xcvr will cut back power out.

Gayle, I am grasping for straws aboveyou have got to establish a base
line in your measurements/operations and to do that you need standards --
dummy load, volt Ohm meter, watt meter, etc.  Buying a used rig without the
faculties to measure the performance is not good practise.   Get some test
gear and you will improve your Ham Radio experience immensily.  Plus you
will understand what is going on when the rig ain't werkin.

73...Rick -- W5RH







Rick Hiller
*The Radio Hotel*  -- W5RH



On Sat, Apr 8, 2017 at 7:27 PM, Gary Sitton via BVARC 
wrote:

> You need to measure the voltage as I indicated with the rig in CW mode
> into an antenna or whatever you used before when you measured the power
> output.  Now a cheap but accurate digital volt-ohm meter will cost as
> little as $10.  A small investment in your hobby I think.
>
> Gary, K5AMH
>
> Sent with AquaMail for Android
> http://www.aqua-mail.com
>
> On April 8, 2017 5:27:52 PM Gayle Dotts via BVARC  wrote:
>
>> Hi Gary,
>>
>> I don't have anything to measure the actual load on the FT-920,
>> unfortunately no dummy load available either. Bought the radio used and
>> without a power chord.  I ordered a Yaesu power chord thru MFJ and it came
>> with two inline fuses one on the positive side one on the negative side,
>> both rated at 20A and look good.  Question If I might ask still is
>> MFJ-4225MV@25A . too under powered or acceptable barely but could be
>> better.  Thank you for your input I appreciate it!
>>
>> 73
>> Gayle Dotts
>> KF5LVZ
>>
>> On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC 
>> wrote:
>>
>>> Gayle:
>>>
>>>Measure the actual under load (100 W. CW) voltage
>>> at the back of the FT-920.  Faulty inline fuse holders
>>> or connectors, and wiring losses can cost you 1/2 v. or
>>> more.  You need a full 13.5 to 13.8 VDC at the back.
>>> Since power to a R Ohm load is V*V/R, a relative power
>>> line voltage drop will result in ~twice a relative power
>>> loss for a fixed R.
>>>
>>> 73s,
>>> Gary Sitton, K5AMH
>>> gasit...@comcast.net
>>>
>>> On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:
>>>
>>> Got a question on power supply for my Yaesu FT-920.
>>>
>>> The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W)
>>> @22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  Is
>>> this MFJ will power the Yaesu but I don’t really see the 100W on output Tx,
>>> although the amp meter on the MFJ shows 6-12A while transmitting running
>>> low to high on the RF PWR knob on the FT-920.  Do I need to increase the
>>> power supply??  Please advise.
>>>
>>>
>>> Thanl you,
>>>
>>> Gayle Dotts
>>>
>>> KF5LVZ
>>>
>>>
>>> ___
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>>> Message delivered to gasit...@comcast.net
>>>
>>>
>>>
>>>
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Re: [BVARC] Power supply

[Gayle Dotts via BVARC]

Thanks will do.

On Sat, Apr 8, 2017 at 7:27 PM, Gary Sitton via BVARC 
wrote:

> You need to measure the voltage as I indicated with the rig in CW mode
> into an antenna or whatever you used before when you measured the power
> output.  Now a cheap but accurate digital volt-ohm meter will cost as
> little as $10.  A small investment in your hobby I think.
>
> Gary, K5AMH
>
> Sent with AquaMail for Android
> http://www.aqua-mail.com
>
> On April 8, 2017 5:27:52 PM Gayle Dotts via BVARC  wrote:
>
>> Hi Gary,
>>
>> I don't have anything to measure the actual load on the FT-920,
>> unfortunately no dummy load available either. Bought the radio used and
>> without a power chord.  I ordered a Yaesu power chord thru MFJ and it came
>> with two inline fuses one on the positive side one on the negative side,
>> both rated at 20A and look good.  Question If I might ask still is
>> MFJ-4225MV@25A . too under powered or acceptable barely but could be
>> better.  Thank you for your input I appreciate it!
>>
>> 73
>> Gayle Dotts
>> KF5LVZ
>>
>> On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC 
>> wrote:
>>
>>> Gayle:
>>>
>>>Measure the actual under load (100 W. CW) voltage
>>> at the back of the FT-920.  Faulty inline fuse holders
>>> or connectors, and wiring losses can cost you 1/2 v. or
>>> more.  You need a full 13.5 to 13.8 VDC at the back.
>>> Since power to a R Ohm load is V*V/R, a relative power
>>> line voltage drop will result in ~twice a relative power
>>> loss for a fixed R.
>>>
>>> 73s,
>>> Gary Sitton, K5AMH
>>> gasit...@comcast.net
>>>
>>> On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:
>>>
>>> Got a question on power supply for my Yaesu FT-920.
>>>
>>> The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W)
>>> @22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  Is
>>> this MFJ will power the Yaesu but I don’t really see the 100W on output Tx,
>>> although the amp meter on the MFJ shows 6-12A while transmitting running
>>> low to high on the RF PWR knob on the FT-920.  Do I need to increase the
>>> power supply??  Please advise.
>>>
>>>
>>> Thanl you,
>>>
>>> Gayle Dotts
>>>
>>> KF5LVZ
>>>
>>>
>>> ___
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>>> Message delivered to gasit...@comcast.net
>>>
>>>
>>>
>>>
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Re: [BVARC] Power supply

[Gary Sitton via BVARC]

You need to measure the voltage as I indicated with the rig in CW mode into 
an antenna or whatever you used before when you measured the power output.  
Now a cheap but accurate digital volt-ohm meter will cost as little as $10. 
A small investment in your hobby I think.


Gary, K5AMH



Sent with AquaMail for Android
http://www.aqua-mail.com


On April 8, 2017 5:27:52 PM Gayle Dotts via BVARC  wrote:


Hi Gary,

I don't have anything to measure the actual load on the FT-920,
unfortunately no dummy load available either. Bought the radio used and
without a power chord.  I ordered a Yaesu power chord thru MFJ and it came
with two inline fuses one on the positive side one on the negative side,
both rated at 20A and look good.  Question If I might ask still is
MFJ-4225MV@25A . too under powered or acceptable barely but could be
better.  Thank you for your input I appreciate it!

73
Gayle Dotts
KF5LVZ

On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC 
wrote:


Gayle:

   Measure the actual under load (100 W. CW) voltage
at the back of the FT-920.  Faulty inline fuse holders
or connectors, and wiring losses can cost you 1/2 v. or
more.  You need a full 13.5 to 13.8 VDC at the back.
Since power to a R Ohm load is V*V/R, a relative power
line voltage drop will result in ~twice a relative power
loss for a fixed R.

73s,
Gary Sitton, K5AMH
gasit...@comcast.net

On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:

Got a question on power supply for my Yaesu FT-920.

The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W)
@22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  Is
this MFJ will power the Yaesu but I don’t really see the 100W on output Tx,
although the amp meter on the MFJ shows 6-12A while transmitting running
low to high on the RF PWR knob on the FT-920.  Do I need to increase the
power supply??  Please advise.


Thanl you,

Gayle Dotts

KF5LVZ


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Re: [BVARC] Power supply

[Rick Hiller via BVARC]

Gayle,

As Gary suggested, measure the voltage right at the rig.after the fuses and 
even maybe inside the rear panel.   Should be 13.5v +
If not adjust the mfj for the correct voltage.  Voltage drop over a looong 
power cord can be a culprit.
GL.Rick. W5RH

Sent from my i-Thingamajig

> On Apr 8, 2017, at 5:27 PM, Gayle Dotts via BVARC  wrote:
> 
> Hi Gary,
> 
> I don't have anything to measure the actual load on the FT-920, unfortunately 
> no dummy load available either. Bought the radio used and without a power 
> chord.  I ordered a Yaesu power chord thru MFJ and it came with two inline 
> fuses one on the positive side one on the negative side, both rated at 20A 
> and look good.  Question If I might ask still is MFJ-4225MV@25A . too 
> under powered or acceptable barely but could be better.  Thank you for your 
> input I appreciate it!
> 
> 73
> Gayle Dotts
> KF5LVZ
> 
>> On Sat, Apr 8, 2017 at 2:29 PM, Gary Sitton via BVARC  
>> wrote:
>> Gayle:
>> 
>>Measure the actual under load (100 W. CW) voltage 
>> at the back of the FT-920.  Faulty inline fuse holders 
>> or connectors, and wiring losses can cost you 1/2 v. or 
>> more.  You need a full 13.5 to 13.8 VDC at the back.
>> Since power to a R Ohm load is V*V/R, a relative power 
>> line voltage drop will result in ~twice a relative power 
>> loss for a fixed R.
>> 
>> 73s,
>> Gary Sitton, K5AMH 
>> gasit...@comcast.net 
>>  
>>> On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:
>>> Got a question on power supply for my Yaesu FT-920. 
>>> 
>>> The FT-920 manual says: 13.5V   DC….Rx(w/signal) @2.5A, Tx 
>>> (100W) @22.0A.  My current power supply is a MFJ-4225MV 25A switching 
>>> power.  Is this MFJ will power the Yaesu but I don’t really see the 100W on 
>>> output Tx, although the amp meter on the MFJ shows 6-12A while transmitting 
>>> running low to high on the RF PWR knob on the FT-920.  Do I need to 
>>> increase the power supply??  Please advise.
>>> 
>>> 
>>> Thanl you,
>>> 
>>> Gayle Dotts
>>> 
>>> KF5LVZ
>>> 
>>> 
>>> 
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>> 
>> 
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Re: [BVARC] Power supply

[Gary Sitton via BVARC]

Gayle:

   Measure the actual under load (100 W. CW) voltage
at the back of the FT-920.  Faulty inline fuse holders
or connectors, and wiring losses can cost you 1/2 v. or
more.  You need a full 13.5 to 13.8 VDC at the back.
Since power to a R Ohm load is V*V/R, a relative power
line voltage drop will result in ~twice a relative power
loss for a fixed R.

73s,
Gary Sitton, K5AMH
gasit...@comcast.net

On 4/8/2017 14:17, Gayle Dotts via BVARC wrote:


Got a question on power supply for my Yaesu FT-920.

The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W) 
@22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  
Is this MFJ will power the Yaesu but I don’t really see the 100W on 
output Tx, although the amp meter on the MFJ shows 6-12A while 
transmitting running low to high on the RF PWR knob on the FT-920. Do 
I need to increase the power supply?? Please advise.



Thanl you,

Gayle Dotts

KF5LVZ



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[BVARC] Power supply

[Gayle Dotts via BVARC]

Got a question on power supply for my Yaesu FT-920.

The FT-920 manual says: 13.5V DC….Rx(w/signal) @2.5A, Tx (100W)
@22.0A.  My current power supply is a MFJ-4225MV 25A switching power.  Is
this MFJ will power the Yaesu but I don’t really see the 100W on output Tx,
although the amp meter on the MFJ shows 6-12A while transmitting running
low to high on the RF PWR knob on the FT-920.  Do I need to increase the
power supply??  Please advise.


Thanl you,

Gayle Dotts

KF5LVZ
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Re: [BVARC] Need Concrete/Hole work done for a light Tower Base??

[Gary Sitton via BVARC]

Guys:

I had planned to bolt a statue of a "Garden Nymph"
using the old base foundation and studs whenever I
have to sell the house, Hi.

73s,
Gary Sitton, K5AMH
gasit...@comcast.net

On 4/8/2017 13:44, Bruce via BVARC wrote:
Only bad side to leaving concrete 6 inches below the ground surface is 
that water will build up or you fill it with dirt. In either way, you 
leave the base of your tower and bolts in water/moisture and they will 
rust. An early demise in some cases. I went about an inch above ground 
level so the water can drain off. You need to see which method is best 
for you. If you are concerned about selling your house, you can always 
break up the top and then throw dirt on it.


73...bruce

On 4/8/2017 1:09 PM, Sam Neal via BVARC wrote:
Hello, Scott is correct on the volume per sack & I was mistaken. 
According to Quikrete's website, each 80 pound bag provides .6 cubic 
foot of cement. Some one suggested leaving the top of the concrete 
approximately 6 inches below ground level. This is a very good idea. 
Should you wish to take the tower down should you sell your home, the 
tower legs can be cut off at cement level and dirt/grass, ect used to 
cover it, leaving no trace it was there. Don't forget installing a 
good ground for the tower other than lightening's route through the 
cement to ground. Sam N5AF 
___ >> On 
Apr 7, 2017, at 4:30 PM, Scott Medbury via BVARC >> > wrote: >> >> A 
sack of sackrete is less than 1 cubic foot. It weighs >> about 80 
pounds and a cubic foot of concrete weighs from >> 90 to 96 pounds 
before water is added. >> >> Scott KD5FBA >>



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[BVARC] Fwd: Announcing 2017 DFW DX & Contest Forum @ HamCom

[GMuller885--- via BVARC]

Guys and gals
Thought is might be of interest. 
 
Gerald Muller K9GEM
gmuller...@aol.com  

 
  

 From: annou...@dfwcontest.com
To: gmuller...@aol.com
Sent: 4/7/2017  10:33:52 P.M. Central Daylight Time
Subj: Announcing 2017 DFW DX &  Contest Forum @ HamCom




2017 DFW DX & Contest Forum
Sponsored by The Lone Star DX Assoc & The  DFW Contest Group
Plus Contest Luncheon with Special Guest, Tim  Duffy, K3LR
"The Evolution and Future of Contesting"

The DFW Contest Group and the Lone Star DX Association announce the 2017  
DFW DX & Contest Forum to be held on Friday and Saturday, June 9th and  10th 
in conjunction with Ham-Com at the Irving Convention Center in Irving,  
Texas. 

The 2017 DFW DX & Contest Forum includes 16  presentations on Friday and 
Saturday and is highlighted with a luncheon on  Saturday featuring our special 
guest Tim Duffy, K3LR. Tim will present on "The  Evolution and Future of 
Contesting" at the luncheon.  Tim will also be  presenting at 1:00 PM on 
Friday on "Station Design for HF".

All  presentations from all speakers are included in your standard 
admission to  Ham-Com however, the Luncheon admission will be $25 and includes 
a 
light boxed  lunch and raffle entry for door prizes 
2017 Presentation Topics
Friday Sessions
*   Introduction to Contesting (KG5VK)  
*   DX 101 (N5JB)  
*   Contesting from a Small/Restricted Lot (NM5M)  
*   QRP Contesting (NE5DL)  
*   Station Design for HF (K3LR)  
*   RF Design for Single Operator Two Radio Stations (W8FN)  
*   Taking Your Contest Efforts to the Next Level (W0UO)  
*   Cubical Quad Design Methods (WA5FWC) 
Saturday Sessions
*   Preparing for the Solar Minimum (W0UO)  
*   Effective Antennas for Low Band DXing (KG5VK)  
*   Survey of Low Band Receiving Antennas (WX0B and HK1A)  
*   The Future of DXing and DXpeditions (KK6EK)  
*   Luncheon ($) - The Evolution and Future of Contesting (K3LR)
-  $25.00 and includes a light boxed lunch and raffle entry for door prizes​
  
*   The Sun and Radio Propagation - (Dr. Tamitha Skov)  
*   Live Demonstration of N1MM + (W8FN, KG5VK, W0UO and others)  
*   Contesting and DXing with the Digital Modes (N3BUO) 
The cost for the Luncheon is $25 and includes admission to the 12:00  
presentation on Saturday with special guest Tim Duffy, K3LR as well as  a boxed 
lunch with deli sandwich, chips, fruit cup or cookie, water and  iced tea.  
Admission price also provides a chance to win one of our  several door prizes 
from prominent Amateur Radio vendors.  Tickets must  be purchased in 
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of Fame in 2006. He was honored with the prestigious Barry Goldwater  
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Year for 2015 by the Dayton Amateur Radio Association. Tim is the Chief  
Operating Officer and General Manager at DX Engineering. He is a graduate of  
the Pennsylvania State University. 
Purchase Ticket for the 2017 DFW DX &  Contest Forum
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Re: [BVARC] Need Concrete/Hole work done for a light Tower Base??

[Bruce via BVARC]

Only bad side to leaving concrete 6 inches below the ground surface is 
that water will build up or you fill it with dirt. In either way, you 
leave the base of your tower and bolts in water/moisture and they will 
rust. An early demise in some cases. I went about an inch above ground 
level so the water can drain off. You need to see which method is best 
for you. If you are concerned about selling your house, you can always 
break up the top and then throw dirt on it.


73...bruce

On 4/8/2017 1:09 PM, Sam Neal via BVARC wrote:
Hello, Scott is correct on the volume per sack & I was mistaken. 
According to Quikrete's website, each 80 pound bag provides .6 cubic 
foot of cement. Some one suggested leaving the top of the concrete 
approximately 6 inches below ground level. This is a very good idea. 
Should you wish to take the tower down should you sell your home, the 
tower legs can be cut off at cement level and dirt/grass, ect used to 
cover it, leaving no trace it was there. Don't forget installing a 
good ground for the tower other than lightening's route through the 
cement to ground. Sam N5AF 
___ >> On 
Apr 7, 2017, at 4:30 PM, Scott Medbury via BVARC >> > wrote: >> >> A 
sack of sackrete is less than 1 cubic foot. It weighs >> about 80 
pounds and a cubic foot of concrete weighs from >> 90 to 96 pounds 
before water is added. >> >> Scott KD5FBA >>



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Re: [BVARC] Need Concrete/Hole work done for a light Tower Base??

[Sam Neal via BVARC]

<<< text/html; charset=ISO-8859-1: Unrecognized >>>
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[BVARC] Scouts Fair and Field Day

[Ralph via BVARC]

Somehow I have wound up as a point of contact between Scouting and 
Houston Area Amateur Radio.

I am probably not the best person to do this, but I am it for 2017.
So far I have received 4 requests from the Houston Area Scout Council

1.To have an EmCom van at Scout Fair May 6 Ft Bend county has 
graciously agreed to loan their van and will provide ARES members to 
staff it.
2.Set up an amateur radio demonstration table at Scout Fair . so 
far 3 operators have agreed to staff the booth
3.Provide contacts for clubs or individuals to play host for scouts 
at Field Day 2017 - so far 3 clubs have agreed

4.Find Hosts for JOTA 2017 in October

_If you would be willing to help at the scout fair table, please let me 
know._
(Help is defined as bring a radio and talk with scouts for an hour or 
two.  PORTABLE POWER & ANTENNAS; I am trying to get a generator for the 
radio booth)

The fair is at Minute Maid park on May 6 from 10-3

I know that not every club is set up to host visitors at field day.
But some are, and some individuals may be willing to set up a station 
for just the scouts.
I have already told council that the number of scouts that can be 
accommodated will be limited at each location.


_If you are willing to do Field Day or JOTA for a scout group, please 
let me know._


73
Ralph  KE5HDF


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Re: [BVARC] Need Concrete/Hole work done for a light Tower Base??

[Gary Sitton via BVARC]

All:

Thanks to all for the base construction ideas and
information.  I'll be ordering this monster as soon as
I get more base details from UST so wish me luck.

73s,
Gary Sitton, K5AMH
gasit...@comcast.net


On 4/7/2017 21:00, Gary Sitton via BVARC wrote:


Rick:

   I plan to guy this mast for sure. I wouldn't trust this in a wind. 
The ALM-31 is very similar to their older 40' crank-up MA-40 model.  
It's made of extruded Aluminum sections rather than tubing.


Gary

Sent with AquaMail for Android
http://www.aqua-mail.com

On April 7, 2017 7:52:51 PM Rick Hiller -- W5RH via BVARC 
 wrote:


Gary,  I think I would ask the tower company for engineering specs.  
Now you mention a tilt over base/ginpole.   Not gonna happen in a 2 
by 2 by 2 base.   I cannot find any information on the tower on line 
other than a brief description in that they just started producing 
after Dayton 2016.  No manual, no drawings, no detailed specs to 
speak of.


Question to consider:  When it is extended at 31 feet and you have 
your 45 pounds of rotor and antenna (windload area not known) waving 
in a brisk, pre-wx-front breeze...what forces will be exerted 31 feet 
down the unguyed tower to the 700 pond base. Overkill is the 
preferred build method.  Keep Redy-Mix in business.


W5RH

Rick Hiller
/The Radio Hotel/  -- W5RH



On Fri, Apr 7, 2017 at 5:44 PM, Scott Medbury via BVARC 
> wrote:


Normal weight concrete is about 145 lb per cu.ft. That is wet
weight. Concrete sold at home centers is dry weight so the yield
will be less than one cu.ft. Straight sack concrete is generally
easier than using flyash if you are creating at home.

If mixing materials by hand from bulk, the old 1,2,3 rule works
well to give 3000 psi or greater. using one bucket or container
of portland cement to 2 containers of sand to 3 containers of
coarse aggregate. Of course if you need air entrainment or want
to use a water reducing, set retarding admixture or super
plasticizer you are better off using redi-mix concrete and
ordering it. Air entrainment is not necessary in this climate if
the bulk of concrete is in the ground.

Scott KD5FBA

Scott Medbury

16802 Aprilmont Drive

Sugar Land, TX 77498-1941

smedb...@windstream.net 

*From:*BVARC [mailto:bvarc-boun...@bvarc.org
] *On Behalf Of *Mike Brannan via
BVARC
*Sent:* Friday, April 07, 2017 5:13 PM
*To:* BRAZOS VALLEY AMATEUR RADIO CLUB
*Cc:* Mike Brannan; gasit...@comcast.net
; Rick Hiller
*Subject:* Re: [BVARC] Need Concrete/Hole work done for a light
Tower Base??

Carefully check the sack yield.

Normal weight concrete is roughly 145 lbs/cu ft.

Use greater than 3000 psi strength concrete.

Do not add excess water. Rod the stiff mix into place.

Note the 2 x 2 x 2 should be measured at least 6 inches below
grade and so all surfaces are against firm to stiff soil.

That means you will need extra concrete to finish above grade.

Sent from my iPhone


On Apr 7, 2017, at 4:46 PM, Rick Hiller via BVARC
> wrote:

8 cu ft X 90 lbs per = 720 lbs.

31 foot lever moving 720 lbs.doesn't take much moment.

Where's KG5KV when you need him?

RH

Sent from my i-Thingamajig


On Apr 7, 2017, at 4:30 PM, Scott Medbury via BVARC
> wrote:

A sack of sackrete is less than 1 cubic foot. It weighs
about 80 pounds and a cubic foot of concrete weighs from
90 to 96 pounds before water is added.

Scott KD5FBA

/Sent from my Verizon 4G LTE Droid/

On Apr 7, 2017 2:04 PM, Gary Sitton via BVARC
> wrote:

Rick,

ALM-31 is new product so I don't have the specs.
yet,  but it's extruded 6061-T6 Alum. and will weigh
~200 lbs. with the beam and rotator.  I would not
need or want to fold it over fully extended! My
handy guy said he'll do it for $500: materials, hole,
frame, re-bar and pour.  Seems a bit high, but it's
turn-key and he's very meticulous.  I probably could
save some money by having a less skilled person
dig and prepare the square hole.  Bell-bottoming
is a great idea however!  Attached is picture of my
homebrew common mode coax choke for the beam.

73s,
Gary Sitton, K5AMH
gasit...@comcast.net 

On 4/7/2017 12:59, Rick Hiller via BVARC wrote:

Gary,

I'm
surprised that a crank up fold over only 

Re: [BVARC] BVARC Digest, Vol 91, Issue 7

[Allen Brier N5XZ via BVARC]

Call Concrete on Demand in Richmond, TX

Allen R. Brier N5XZ
1515 Windloch Lane
Richmond, Texas 77406-2553
(281) 342-1882 (Home)
(713) 705-4801 (Cell)


-Original Message-
From: BVARC [mailto:bvarc-boun...@bvarc.org] On Behalf Of
bvarc-requ...@bvarc.org
Sent: Friday, April 07, 2017 12:00 PM
To: bvarc@bvarc.org
Subject: BVARC Digest, Vol 91, Issue 7

Message: 3
Date: Fri, 7 Apr 2017 10:53:36 -0500
From: Gary Sitton 
To: BRAZOS VALLEY AMATEUR RADIO CLUB 
Subject: [BVARC] Need Concrete/Hole work done for a light Tower Base??
Message-ID: 
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Tower guys:


   I'm seriously contemplating and soon buying a

US Towers ALM-31, crank-up, fold-over tower

for my Tex Hex beam which requires a 2' x 2' x 2'

(about a cubic yard) of concrete base.  Does

anyone have a suggestion regarding someone

to dig and fill the hole?


   I will have anchor bolt forms and all re-bar work

done ahead of the dig/pour.  I'm 77 and just had a

double (yes!) hip joint replacement and can't really

dig such a hole nice and square.  Also, I have no

concrete experience and you only get one chance

at a good pour.


73s,
Gary Sitton, K5AMH
gasit...@comcast.net
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