[HCARC] Field Day Antennas

Sat Jun 7 14:55:10 EDT 2014

Gary et alll:

I would urge that you don't try to run any more than 2 HF stations at 
once. If the GOTA station is across the streed, you might be able to use 
if at the same time as another HF station but probably on a different 
band. That would require coordination between the station at the Red 
Cross and the GOTA location. People running across the steet seems hoky 
and could be dangerous. I have a pair of Family Band HTs that could be 
used for such coordination. You're welcome to borrow them.

73,

Bill, W3XO
On 6/6/2014 5:52 PM, Gary J - N5BAA wrote:
> "Rather than trying to set up a bunch of temporary antennas, i think the
> club would be better off trying to improve the club station capability"
>
> BUT, Field Day is partially about being able to set up Temp Antennas 
> as needed, and unfortunately there is only one 20-10 meter antenna and 
> one 40 meter L.  With 2-3 radios running simultaneously that might be 
> awfully restrictive.  I have no problem going up and picking up the 
> club trailer to use as one support for additional 40-10 OCF dipoles 
> (numerous club members are making them after Dale's class) and/or any 
> other antenna someone wants to try out.  I have no problem bringing 
> enough coax if necessary to run them through a window or door if 
> necessary.
>
> My other question might be why we have so many UHF/VHF antennas on the 
> roof and virtually only the one 20-10 HF Vertical.  When was the last 
> time someone talked on 70 cm, heck we hardly use 2m and if I am not 
> mistaken we have two of those on the roof.  Not saying we might not 
> use both 2m antennas in an emergency, but why not more HF.
>
> I do agree we should ultimately improve the clubs station capability, 
> along with trying to increase the club use of said station.  It's sad 
> that we have a growing number of Tech's who have no HF capability and 
> who would benefit from the encouragement gained by using the station 
> radios on HF.  I could easily demonstrate this by merely counting the 
> number of graduates of Dale's classes who are active, both on the air 
> and in the club. Unfortunately to many/most club members the Radio 
> Room is a BIG MYSTERY.  It shouldn't be so. I have been a member of 
> the club for working on 3 years and I have had 2 chances to run the 
> club station, both with the help and encouragement of Gale Heise.  
> Heck I have been secretary for working on 2 years and only have had a 
> key for 2-3 months.
>
> Gary J
> N5BAA
>
>
> -----Original Message----- From: Kerry Sandstrom
> Sent: Friday, June 6, 2014 3:12 PM
> To: Bill Tynan ; hcarc at mailman.qth.net
> Subject: Re: [HCARC] Field Day Antennas
>
> I agree with Bill, for Field Day, it seems disconnecting the 2 m and 432
> antennas, if practical, might be the easiest solution.  Harvey, how long
> are the coax runs?  M17/74, the current version of RG-8/U has a listed
> attenuation of 1.5 dB /100 feet at 50 MHz and 4.8 dB at 400 MHz.
> M17/29, the current version of RG-59/U which has the same nominal
> diameter as RG-8X is not listed at 50 MHz but is 9.0 dB at 400MHz.
> RG-8X is not a standard mil type cable.  It should work without any
> problems at HF, particularly if its a run of 50 feet or so and power is
> 100 W or so.
>
> The nominal OD for RG-8X is just under 1/4 inch.  It doesn't take much
> space but would have to be pushed through with out connectors attached.
>
> Rather than trying to set up a bunch of temporary antennas, i think the
> club would be better off trying to improve the club station capability
>
> Kerry
>
>
> On 6/6/2014 2:24 PM, Bill Tynan wrote:
>> Harvey et all:
>>
>> My recolection is that RG-8X is much more lossey than RG-8. For Field 
>> day, you won't need the 2 meter and 70 cm antennas, so why not 
>> disconnect them and use the cable for something - that is if they can 
>> be gotten to easily.
>>
>> Could you, temporarily run coaxs through the window or the back door?
>>
>> Just a few thoughts.
>>
>> 73,
>>
>> Bill, W3XO
>> On 6/6/2014 7:43 AM, Harvey N. Vordenbaum wrote:
>>> Due to the limitations of the building feed through conduit we only 
>>> have a
>>> few coax's (RG-8's) available.
>>> The HF antennas are combined outside by a remote coax switch box.  
>>> There is
>>> one spare feed through cable however.
>>> There are separate coax's for the 2M and 2M/.7M antennas.
>>> Fred has an idea of replacing all the present RG-8's with RG-8X 
>>> cable thus
>>> gaining a few more lines passing through. Someone could make a 
>>> calculation
>>> about how many lines would be gained. Making this change would not 
>>> be easy,
>>> however and time is getting short.
>>> For field day we may have to pass coax through the partially opened 
>>> window,
>>> but then you wouldn't want a generator running nearby.
>>>
>>>
>>> -----Original Message-----
>>> From: HCARC [mailto:hcarc-bounces at mailman.qth.net] On Behalf Of Kerry
>>> Sandstrom
>>> Sent: Thursday, June 05, 2014 10:07 PM
>>> To: Gary J - N5BAA; hcarc at mailman.qth.net
>>> Subject: [HCARC] Field Day Antennas
>>>
>>> Gary,
>>>
>>> You may only need to put an antenna up for the GOTA station across the
>>> street.  Questions you need to answer are:
>>>           1.  Do the existing 40 and 80 m dipoles have separate 
>>> transmission
>>> lines?
>>>           2. Can you operate one transceiver on the 20/15/10 
>>> Vertical and
>>> another on the dipoles simultaneously?
>>>           3. If the answer to 1 is yes, can you operate with one 
>>> transceiver
>>> on 80m and another on 40 m simultaneously?
>>>           4. Is operation even permitted on 30/17/12 m for field 
>>> day, if not
>>> you don't need any WARC antennas?
>>>
>>> If you can operate on 80 and/or 40 simultaneously with 20/15/10, 
>>> then that
>>> is probably all you need.  You won't be able to operate two stations 
>>> on any
>>> single band even with separate antennas behind the RC Building. I 
>>> suggest
>>> that if you really don't need to add any more antennas you shouldn't.
>>>
>>> You should check out all the antennas and transmission lines that are a
>>> permanent part of the station a couple weeks ahead of time in case 
>>> you need
>>> to make any repairs.
>>>
>>> If you are operating as 2 or 3F (why not 4F!!) then I don't think 
>>> setup time
>>> is even a factor since the station is ostensibly part of a "permanent"
>>> emergency fascility.
>>>
>>> Kerry
>>>
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>>
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