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Re: PRC320 and dipole?

 

Hi Dave

One of the things you can use is a "spyder". To make one, first get
your 80M dipole up and tuned to the freq you want, then add the 40M
dipole, and tune it. There should be only 1 feed point, no balun needed
or recommended. Your coax feed should go directly to the dipoles. You
can pick one band to run the wire North/South, and the other to run
East/West. For any additional bands, you may want, follow the same
format. From above the antenna should look like a plus or cross. An
added benefit of this antenna, is as you add more bands, each dipole
gets more broad-banded.

I've been running one of these for just over a year now, I still have an
swr of 1.3 to 1 or lower across each band I use, 160, 80, 40,20. I have
not checked the odd harmonics on this yet.

You do not need an Antenna Tuner for the bands you cut this for.


hth,

Don
AC2DX



Iaian hi im dave KG4LQT
if i have a question for you or anytone who can answer,, I have a racal
921with only room for one anntenna im thinking of a multiband antenna
for both 40 and 80 meters which are the bands i use the most. do you
know anyone who uses a multui band antenna as opposedd to constantly
changing the length of the dipole or long wire end fed,? If you do,,do
you know which one works best?? Im a disabled guy and once i get the
antenmna up i want ti leave it there.\I have a small but sturdy mast to
attach it to,
thank you very much your expertise
dave
KG4LQT

------------------------------------------------------------------------
*From:* Iain G. Moffat <iain@...>
*To:* Racal-manpacks@...
*Sent:* Wed, September 22, 2010 2:56:41 PM
*Subject:* Re: [Racal-manpacks] PRC320 and dipole?



Ben

Feeding the dipole with coax from the transmitter output BNC is the correct
way to do it - the operator is expected to roll up or unroll the dipole
ends for best match. There was a thread on the clansman_larkspur group a
few months ago about using the ATU for a dipole (with one leg connected to
case ground and one to the antenna terminal) and I seem to recall that the
conclusion was that a series capacitor of a few 10s of pf and a suitably
high voltage rating between the antenna terminal and that leg of the dipole
helped it match.

Regards

Iain
73 de G0OZS
============

On Sep 22 2010, Military1944@... <mailto:Military1944%40aol.com> wrote:


PRC320 and dipole?

Has anyone tried feeding their dipole from the lower rear socket as apart
from the atu mount ?

Ben.
--
======================================================
Iain G. Moffat (iain@... <mailto:iain%40moffatig.com>)
+44(0)7850 424 007
======================================================
Re: PRC320 and dipole?

 

Hello, Dave,
re your question antenna for 80 and 40 m:
try to get some information on the net about the Windom and W3DZZ antennas.
See whether or not you can accomodate their length.
Will make some sketches and put it in the mail.
Thanks for both of your messages, pleased that there is some success now.
Best rgds.,
Peter, DC6BN
Re: List of UK export-restricted military items

 

Thanks, Ben!
?
Could someone please try it again - I've deleted it and added it back in again.
?
?
regards,
?
?
Bob


--- On Tue, 28/9/10, Military1944@... wrote:

?
In a message dated 28/09/2010 10:33:05 GMT Daylight Time, bobsayers2000@... writes:
From the "Links" button on the Home Page - quickest way to get there is by clicking on "Visit your Group" below
-----------------
I'm not getting a 'link' button Bob. Using Google Chrome. Ben.
  • Groups Labs (Beta)

Re: List of UK export-restricted military items

 

Hi, Stuart and All,
?
From the "Links" button on the Home Page - quickest way to get there is by clicking on "Visit your Group" below.
?
Please let me know if the Link isn't working - I've just tried it and it works OK, but sometimes yahoo features work differently from an Owner/Moderator account access.
?
Please note also that yahoo groups are taking quite a lot of stick recently on the Moderators Forum, for features which are not currently working properly. You may have already discovered that the "Search" facility in Messages?will sometimes give you different results on two consequetive searches, and occasionally will not find search strings even though you subsequently find them "manually".
?
best regards,
?
Bob


--- On Mon, 27/9/10, Stuartjmckinnon@... wrote:

Bob
?
What link, and where do we find the link??
?
Stuart
G0TBI
Re: PRC320 and dipole?

Iain G. Moffat
 

Dave

I would agree with Gerald - a fan dipole is the best single simple antenna
for the lower HF bands.

It can be rigged either horizontal with a tree or mast at each end, or as an inverted-V with the feedpoint/balun suspended from a single elevated support. That used to work very well for G4IRC/P (the Ipswich club field day station) when we were band leaders on 40m and 80m in SSB field day some years in the 1980s and 90s.

In theory there are some restrictions on band combinations (since a 3/2 wave
dipole resonates on the same frequencies as a 1/2 wave dipole and the feed
point impedance will be low if they share a feeder and balun) - you may find
that a 40m and 80m dipole sharing a feeder and balun will also tune on 20m without an extra set of wires.

Regards

Iain
73 de G0OZS
===========

On Sep 28 2010, Gerald Greatrix wrote:

Hi Dave

At Thorpe camp radio museum we have a multi band dipole aerial up i.e. 160, 80, 40, 20,15, 10, each wire dipole is cut for a part of the band we use most all fed via 1 feeder.

73 de Gerald G7HNM


From: Racal-manpacks@... [mailto:Racal-manpacks@...] On Behalf Of david ludlow Sent: 27 September 2010 23:14 To: Racal-manpacks@... Subject: Re: [Racal-manpacks] PRC320 and dipole?



Iaian hi im dave KG4LQT
if i have a question for you or anytone who can answer,, I have a racal 921with only room for one anntenna im thinking of a multiband antenna for both 40 and 80 meters which are the bands i use the most. do you know anyone who uses a multui band antenna as opposedd to constantly changing the length of the dipole or long wire end fed,? If you do,,do you know which one works best?? Im a disabled guy and once i get the antenmna up i want ti leave it there.&#92;I have a small but sturdy mast to attach it to,

thank you very much your expertise

dave

KG4LQT

_____
From: Iain G. Moffat <iain@...>
To: Racal-manpacks@...
Sent: Wed, September 22, 2010 2:56:41 PM
Subject: Re: [Racal-manpacks] PRC320 and dipole?


Ben

Feeding the dipole with coax from the transmitter output BNC is the correct way to do it - the operator is expected to roll up or unroll the dipole ends for best match. There was a thread on the clansman_larkspur group a few months ago about using the ATU for a dipole (with one leg connected to case ground and one to the antenna terminal) and I seem to recall that the conclusion was that a series capacitor of a few 10s of pf and a suitably high voltage rating between the antenna terminal and that leg of the dipole helped it match.

Regards

Iain
73 de G0OZS
============

On Sep 22 2010, Military1944@... <mailto:Military1944%40aol.com> wrote:

PRC320 and dipole?
Has anyone tried feeding their dipole from the lower rear socket as apart from the atu mount ? Ben.
--
======================================================
Iain G. Moffat (iain@...) +44(0)7850 424 007
======================================================
Re: List of UK export-restricted military items

 

¿ªÔÆÌåÓý

I found links on the left hand side
?
ML 11 really screws us now then!
?
Stuart
Re: PRC320 and dipole?

Gerald Greatrix
 

¿ªÔÆÌåÓý

Hi Dave

???????????? At Thorpe camp radio museum we have a multi band dipole aerial up i.e. 160, 80, 40, 20,15, 10, each wire dipole is cut for a part of the band we use most all fed via 1 feeder.

73 de Gerald G7HNM

?

From: Racal-manpacks@... [mailto:Racal-manpacks@...] On Behalf Of david ludlow
Sent: 27 September 2010 23:14
To: Racal-manpacks@...
Subject: Re: [Racal-manpacks] PRC320 and dipole?

?

?

Iaian hi im dave KG4LQT

if i have a question for you or anytone who can answer,, I have a racal 921with only room for one anntenna im thinking of a multiband antenna for both 40 and 80 meters which are the bands i use the most.? do you know anyone who uses a multui band antenna as opposedd to constantly changing the length of the dipole or long wire end fed,? If you do,,do you know which one works best?? Im a disabled guy and once i get the antenmna up i want ti leave it there.\I have a small but sturdy mast to attach it to,

thank you very much your expertise

dave

KG4LQT?

?

From: Iain G. Moffat
To: Racal-manpacks@...
Sent: Wed, September 22, 2010 2:56:41 PM
Subject: Re: [Racal-manpacks] PRC320 and dipole?

?

Ben

Feeding the dipole with coax from the transmitter output BNC is the correct
way to do it - the operator is expected to roll up or unroll the dipole
ends for best match. There was a thread on the clansman_larkspur group a
few months ago about using the ATU for a dipole (with one leg connected to
case ground and one to the antenna terminal) and I seem to recall that the
conclusion was that a series capacitor of a few 10s of pf and a suitably
high voltage rating between the antenna terminal and that leg of the dipole
helped it match.

Regards

Iain
73 de G0OZS
============

On Sep 22 2010, Military1944@... wrote:

>
>PRC320 and dipole?
>
>Has anyone tried feeding their dipole from the lower rear socket as apart
>from the atu mount ?
>
>Ben.
>

--
======================================================
Iain G. Moffat (iain@...) +44(0)7850 424 007
======================================================

?

No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.856 / Virus Database: 271.1.1/3162 - Release Date: 09/27/10 07:34:00
Re: List of UK export-restricted military items

 

¿ªÔÆÌåÓý

In a message dated 28/09/2010 10:46:10 GMT Daylight Time, bobsayers2000@... writes:
Thanks, Ben!
?
Could someone please try it again - I've deleted it and added it back in again.
?
-----------------
?
Yep, its there now Bob.

Re: List of UK export-restricted military items

 

¿ªÔÆÌåÓý

In a message dated 28/09/2010 10:33:05 GMT Daylight Time, bobsayers2000@... writes:
From the "Links" button on the Home Page - quickest way to get there is by clicking on "Visit your Group" below
-----------------
I'm not getting a 'link' button Bob. Using Google Chrome. Ben.
  • Groups Labs (Beta)

Re: PRC320 and dipole?

 

Iaian hi im dave KG4LQT
if i have a question for you or anytone who can answer,, I have a racal 921with only room for one anntenna im thinking of a multiband antenna for both 40 and 80 meters which are the bands i use the most.? do you know anyone who uses a multui band antenna as opposedd to constantly changing the length of the dipole or long wire end fed,? If you do,,do you know which one works best?? Im a disabled guy and once i get the antenmna up i want ti leave it there.\I have a small but sturdy mast to attach it to,
thank you very much your expertise
dave
KG4LQT?

From: Iain G. Moffat
To: Racal-manpacks@...
Sent: Wed, September 22, 2010 2:56:41 PM
Subject: Re: [Racal-manpacks] PRC320 and dipole?

?

Ben

Feeding the dipole with coax from the transmitter output BNC is the correct
way to do it - the operator is expected to roll up or unroll the dipole
ends for best match. There was a thread on the clansman_larkspur group a
few months ago about using the ATU for a dipole (with one leg connected to
case ground and one to the antenna terminal) and I seem to recall that the
conclusion was that a series capacitor of a few 10s of pf and a suitably
high voltage rating between the antenna terminal and that leg of the dipole
helped it match.

Regards

Iain
73 de G0OZS
============

On Sep 22 2010, Military1944@... wrote:

>
>PRC320 and dipole?
>
>Has anyone tried feeding their dipole from the lower rear socket as apart
>from the atu mount ?
>
>Ben.
>

--
======================================================
Iain G. Moffat (iain@...) +44(0)7850 424 007
======================================================
Re: List of UK export-restricted military items

Michael Buckley
 

¿ªÔÆÌåÓý

Hi Bob

I cannot find the link you mention, all I get is a message that tells me I am not a group moderator!!

As far as I am aware ALL EX MILITARY GEAR no matter what is subject to export regulations even if it is take to Europe on a days holiday!

Even a civvy landrover with a military hitch is technically subject to the regulations!

Daft but true

I had to get a licence for my 62 set, recently!

Mike
m1ccf

On 27/09/2010 20:50, david ludlow wrote:

?
hi Bob? im dave,in upsataeNy..ive recently got my 921 on the air..i wanted to know if there are any racal users nets i could try hitting??or military equipment users net too. either or both??I do know of the wireless set 19 on tues am at 1000hrs on 3675 any others??
daveKG4LQT

From: BobS
To: Racal-manpacks@...
Sent: Mon, September 27, 2010 8:16:45 AM
Subject: [Racal-manpacks] List of UK export-restricted military items

?

I've added a Link to the List of military items which fall under the latest export control regulations.

Have any of you had any experience of seeking approval under these regs for the sort of equipment which forms the subject of this Group?

regards,

Bob
PRC-320 user group invite

martin
 

A bit off topic but i know some of you are military radio collectors so here
goes.

Hi All
you are invited to join the prc-320 user group, dedicated to the Clansman prc320
family.
here you will be able to exchange technical ideas,problems, fixes, buy and sell
ect.
I look forward to your visit.

Martin G7JWR
Re: List of UK export-restricted military items

 

hi Bob? im dave,in upsataeNy..ive recently got my 921 on the air..i wanted to know if there are any racal users nets i could try hitting??or military equipment users net too. either or both??I do know of the wireless set 19 on tues am at 1000hrs on 3675 any others??
daveKG4LQT

From: BobS
To: Racal-manpacks@...
Sent: Mon, September 27, 2010 8:16:45 AM
Subject: [Racal-manpacks] List of UK export-restricted military items

?

I've added a Link to the List of military items which fall under the latest export control regulations.

Have any of you had any experience of seeking approval under these regs for the sort of equipment which forms the subject of this Group?

regards,

Bob
Re: Kaynard

Tone
 

¿ªÔÆÌåÓý

On 27/09/2010 18:36, JULIAN BARNARD wrote:
?

The Racal Kaynard units were used in our Embassies so that the staff could have covert communications with the UK.
Julian Barnard.?

Thanks Julian, I had suspected this might be the case. Is there a name for the protocol it used? There is absolutely jot on Google about this equipment except what I have written myself afew days ago.

I'm after a 5MHz oscillator incidentally if anyone could sell me one.

Regards,
Tone
Re: Kaynard

 

The Racal Kaynard units were used in our Embassies so that the staff could have covert communications with the UK.
Julian Barnard.?


--- On Mon, 27/9/10, wind_in_the_antenna wrote:

From: wind_in_the_antenna
Subject: [Racal-manpacks] Kaynard
To: Racal-manpacks@...
Date: Monday, 27 September, 2010, 17:34

?
Can anyone tell me who was using the Kaynard units when they were in service?
I've got the RT and PA but not the CD. Pics can be seen here
<>

Tone

Kaynard

wind_in_the_antenna
 

Can anyone tell me who was using the Kaynard units when they were in service?
I've got the RT and PA but not the CD. Pics can be seen here
<>

Tone
Re: Ground Spike Antenna question

Gerald Greatrix
 

¿ªÔÆÌåÓý

Yes Walt 2 sizes of rod dia.

Vy 73 de Gerald G7HNM

?

From: Racal-manpacks@... [mailto:Racal-manpacks@...] On Behalf Of Walter
Sent: 27 September 2010 15:03
To: Racal-manpacks@...
Subject: [Racal-manpacks] Ground Spike Antenna question

?

?

I was looking for some information about the ground spike antenna. do the short rod sections fit into the matching units of all gsa's I have a short section set and was given some long sections and they do not fit it looks like a spacer is present and the diameter of the short sections is small. am I correct?

Thank
73
walt
kb3sbc

No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.856 / Virus Database: 271.1.1/3160 - Release Date: 09/26/10 19:40:00
Ground Spike Antenna question

Walter
 

I was looking for some information about the ground spike antenna. do the short rod sections fit into the matching units of all gsa's I have a short section set and was given some long sections and they do not fit it looks like a spacer is present and the diameter of the short sections is small. am I correct?

Thank
73
walt
kb3sbc
Syncal 30 Photos posted

ektpuah
 

Dear all,

I just posted 3 photographs of my Syncal 30 (have not attached the whip antenna) in the photo section. Enjoy.

73
James Puah
9V1JP
List of UK export-restricted military items

 

I've added a Link to the List of military items which fall under the latest export control regulations.

Have any of you had any experience of seeking approval under these regs for the sort of equipment which forms the subject of this Group?


regards,


Bob
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