[Hallicrafters] Hallicrafters Digest, Vol 61, Issue 34
grahamh551 at gmail.com
grahamh551 at gmail.com
Sun Feb 15 15:21:07 EST 2009
Hi Tom,
You can put me down for two SX-101 and one SX-100 kits.
73,
Graham
N6GH
Sent via BlackBerry from T-Mobile
-----Original Message-----
From: hallicrafters-request at mailman.qth.net
Date: Sun, 15 Feb 2009 12:00:13
To: <hallicrafters at mailman.qth.net>
Subject: Hallicrafters Digest, Vol 61, Issue 34
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Today's Topics:
1. Re: Question (Glen Zook)
2. SX-100 and '101 can-capacitors (Tom N?JMY)
3. SX-42 Help Needed (Joe Connor)
4. Re: SX-42 Help Needed (Rodger)
5. Re: SX-100 and '101 can-capacitors (N8IE)
----------------------------------------------------------------------
Message: 1
Date: Sat, 14 Feb 2009 14:04:29 -0800 (PST)
From: Glen Zook <gzook at yahoo.com>
Subject: Re: [Hallicrafters] Question
To: Hallicrafters list <hallicrafters at mailman.qth.net>, Dan Cotsirilos
K9DTC <k9dtc at comcast.net>
Message-ID: <301928.88540.qm at web52910.mail.re2.yahoo.com>
Content-Type: text/plain; charset=us-ascii
When circular polarization is used with either a horizontally polarized or a vertically polarized antenna the "loss" is generally around 3 dB. However, for vertical to horizontal (on a "line of sight path") there is generally at least 20 dB loss and that can be even more.
Glen, K9STH
Website: http://k9sth.com
--- On Sat, 2/14/09, Dan Cotsirilos K9DTC <k9dtc at comcast.net> wrote:
Gigiparts had the following question today for their sweepstakes drawing. The question and their correct answer (3 db) are both bogus to me. First the amount of loss depends on freq and second no matter what freq the loss is more than 3 db?
What loss can you automatically assume when working between a vertical and a horizontal polarized antenna?
5 DB
3 DB
8 DB
1 DB
------------------------------
Message: 2
Date: Sat, 14 Feb 2009 21:06:00 -0600
From: Tom N?JMY <n0jmy at hayseedhamfest.com>
Subject: [Hallicrafters] SX-100 and '101 can-capacitors
To: List Hallicrafters <hallicrafters at mailman.qth.net>
Message-ID: <49978698.1080302 at hayseedhamfest.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi, guys. I'm feeling the waters here. I'm thinking I'm going to put
in an order for some new 66/22/22 uF @ 450V/450V/450V can capacitors.
These would be replacements for the SX-100 and SX-101.
I'm also going to put together complete recap kits for the various
models and marks. These would have the one (or two) small electrolytics
and Mylar caps to replace to old paper caps.
I don't have anything on my website about this yet, but I wanted to see
if anyone on the list had any interest in pre-ordering any of these?
The can-caps + small electrolytics will run $27.95 + S&H. The kits vary
from model to model but are generally in the mid-$40's + S&H.
As I mentioned, I don't have this up on my website, so if you have any
interest please contact me at tom at hayseedhamfest.com .
These will take about three weeks or so to produce once I order them.
If you haven't seen what our replacement kits look like you can see them
at www.hayseedhamfest.com and navigate to the caps page.
Many thanks and keep the glow,
Tom N?JMY. .
www.hayseedhamfest.com
Multi-section Can Capacitors
for Heathkit, Drake, Halli, Hammy, more...
------------------------------
Message: 3
Date: Sun, 15 Feb 2009 05:43:00 -0800 (PST)
From: Joe Connor <joeconnor53 at yahoo.com>
Subject: [Hallicrafters] SX-42 Help Needed
To: hallicrafters at mailman.qth.net
Message-ID: <756038.76731.qm at web46307.mail.sp1.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Well, I picked up the SX-42 and it was as advertised: strong on FM but weak on AM. I did some signal injection.
On the lower four bands, a 455-khz signal injected into the 1st IF gave strong output. An RF signal on the plate of the 2nd RF gave strong output. An RF signal at the input of the 2nd RF gave distorted output. An RF signal in the 1st RF gave weak output. The volutages in the 1st and 2nd RF test normal.
Where do I go from here?
Joe Connor
------------------------------
Message: 4
Date: Sun, 15 Feb 2009 09:03:20 -0600
From: Rodger <wq9e at dtnspeed.net>
Subject: Re: [Hallicrafters] SX-42 Help Needed
To: joeconnor53 at yahoo.com
Cc: hallicrafters at mailman.qth.net
Message-ID: <49982EB8.4010305 at dtnspeed.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Joe,
The first RF stage is not used on the broadcast band range so if you
were testing here that would explain the weak signal when injecting
there. If it is still weak when the signal is injected on the 2'nd
through 4'th ranges then that might point to a problem in your first
stage/input. Is the link connected between A2 and A3 (assuming you are
not using a balanced feedline)?
On the 2'nd through 4'th How much signal and how were you injecting it
on the grid of the 2'nd RF stage? If you loaded it down with you
generator output impedance and reduced the bias or fed too much signal
this would cause the distortion since the grid impedance is quite high.
Does turning the AGC off have any effect on the weak AM signals?
If the 1'st RF stage is still a problem on bands 2 through 4 carefully
examine the back wafers on the bandswitch for burnt contacts and signs
of arcing. This portion of the switch is prone to arcing and carbon
tracks due to the plate voltage present on it.
Rodger WQ9E
Joe Connor wrote:
> Well, I picked up the SX-42 and it was as advertised: strong on FM but weak on AM. I did some signal injection.
>
> On the lower four bands, a 455-khz signal injected into the 1st IF gave strong output. An RF signal on the plate of the 2nd RF gave strong output. An RF signal at the input of the 2nd RF gave distorted output. An RF signal in the 1st RF gave weak output. The volutages in the 1st and 2nd RF test normal.
>
> Where do I go from here?
>
> Joe Connor
>
>
>
>
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------------------------------
Message: 5
Date: Sun, 15 Feb 2009 10:46:05 -0500
From: "N8IE" <n8ie at woh.rr.com>
Subject: Re: [Hallicrafters] SX-100 and '101 can-capacitors
To: 'Tom N?JMY' <n0jmy at hayseedhamfest.com>, "'List Hallicrafters'"
<hallicrafters at mailman.qth.net>
Message-ID:
<20090215154603.JFNC26723.hrndva-omta02.mail.rr.com at Shack2>
Content-Type: text/plain; charset="iso-8859-1"
Tom,
If you make one for the SX-99 I will buy two!
73
Dan, N8IE
-----Original Message-----
From: hallicrafters-bounces at mailman.qth.net
[mailto:hallicrafters-bounces at mailman.qth.net] On Behalf Of Tom N?JMY
Sent: Saturday, February 14, 2009 10:06 PM
To: List Hallicrafters
Subject: [Hallicrafters] SX-100 and '101 can-capacitors
Hi, guys. I'm feeling the waters here. I'm thinking I'm going to put in an
order for some new 66/22/22 uF @ 450V/450V/450V can capacitors.
These would be replacements for the SX-100 and SX-101.
I'm also going to put together complete recap kits for the various models
and marks. These would have the one (or two) small electrolytics and Mylar
caps to replace to old paper caps.
I don't have anything on my website about this yet, but I wanted to see if
anyone on the list had any interest in pre-ordering any of these?
The can-caps + small electrolytics will run $27.95 + S&H. The kits vary
from model to model but are generally in the mid-$40's + S&H.
As I mentioned, I don't have this up on my website, so if you have any
interest please contact me at tom at hayseedhamfest.com .
These will take about three weeks or so to produce once I order them.
If you haven't seen what our replacement kits look like you can see them at
www.hayseedhamfest.com and navigate to the caps page.
Many thanks and keep the glow,
Tom N?JMY. .
www.hayseedhamfest.com
Multi-section Can Capacitors
for Heathkit, Drake, Halli, Hammy, more...
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