[HCARC] Field Day Antennas

Sat Jun 7 14:48:59 EDT 2014

Harvey et all:

If you use the club tower, you could hang an 75/80 inverted V from it.

73,

Bill, W3XO
On 6/6/2014 7:59 PM, Harvey N. Vordenbaum wrote:
> ****You have to realize we are severely compromised on space to put up
> antennas at the RC.  What we have is what was thought could support the RC
> and not to put in a rival to a full sized home station.
> Members can come in operate HF with the antennas we have now, although not
> real good on 80M.
> ********
> -----Original Message-----
> From: HCARC [mailto:hcarc-bounces at mailman.qth.net] On Behalf Of Gary J -
> N5BAA
> Sent: Friday, June 06, 2014 5:52 PM
> To: Kerry Sandstrom; Bill Tynan; hcarc at mailman.qth.net
> Subject: Re: [HCARC] Field Day Antennas
>
> "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
> **********There are only two*****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.
> **********There are two VHF/UHF antennas.  One is a heavy duty J-pole combo
> 2M/.7M and one 2M. antenna.  I would like to replace the J-pole with a gain
> 2M/.7M antenna in order to reach the 444.175 repeater in FBG.
> There is another antenna for 47mHz for the RC.
> HV******
>
> 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 will be glad to have the station open and conduct some orientations
> if some would like to come in and operate.  Of course you have to work
> around the RC's use of the room.  There is a monthly calendar you can see on
> their website, although it is a bit involved to get to. HV ******
> 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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