Rick, et. Al...
The HF115F-H-012-1Z relay has a substantial max. make time of 15 msec.,
whereas the GH1/HC1/RJ1 are rated at 6 msec. maximum and are typically
1-2 msec. Even if the typical make time of the HF115F is half the max.
rating, it's still too slow for several transceivers that cannot delay
the RF envelope in a menu setting. The HF115F is similar to a
Tyco/Schrack model. They're generally fine for switching RF, even at
high power, but not high power at QSK switching speeds. We need to pay
attention to the relay's switching speed.
Paul, W9AC
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
Rick@DJ0IP.de
Sent: Monday, August 22, 2016 5:05 AM
To: 'Discussion of Ten-Tec Equipment' <tentec@contesting.com>
Subject: Re: [TenTec] Replacement output T/R relays for TT linear amps.
If this is a BIG issue, I can buy a supply of these and store the with
Scott W4PA (Vibroplex/Spiderbeam/INRAD/etc.
I can ship them for free to him. Then you must only order in TN.
). I already receive their big catalog anyway.
Gunner, can you tell me exactly which relay it is... page number in
catalog or send a direct link please.
73 - Rick, DJ0IP
(Nr. Frankfurt, Germany)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
gunnerjuulnyholm@me.com
Sent: Monday, August 22, 2016 10:40 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Replacement output T/R relays for TT linear amps.
Hi Jim.
After 15 years of CW usage the K1 antenna relay had to be changed in my
Centurion 422. I agree that the Gigavac relay is super, but if you are
looking for a direct and cheap replacement, you can get it from the
German post order company <www.reichelt.de <http://www.reichelt.de/>>.
Their type no. of the relay is HF115F-H-012-1Z, and the price is EUR
2,20. The contact rating is 440 Vac and 10 A. Same pin arrangement. -
I'm sure that you also can afford a postage of 7 EUR? Handling time <
24 hours.
You can't avoid also receiving their inch thick catalogue with 1500
pages of (almost) any electronic component at very affordable prices.
The change in the Centurion was quite simple. The relay is inside a
sound insulating box filled with rubber foam around the relay, but it
is not difficult to get the old relay out. I couldn't put in the new
relay in precisely the same position, but I don't hear the relay at all
when using CW.
73 and good luck!
Gunner / oz6nf
On 21 Aug 2016, at 23:11, w3ka@lycos.com wrote:
Thanks Paul W9AC and Jim K9YC... This sounds like a great way to go..
tnx for the response..
73, Jim W3KA
On 2016-08-21 20:27, Jim Brown wrote:
Agreed on all counts. Several years ago, an engineer in the Alpha
booth told me they use Gigavac. I've been using Gigavac as replacements
for my TenTec amps for about ten years. I bought them direct from
Gigavac under their ham discount program, and I still have a couple of
new spares in my parts stash. I don't remember the last time I had to
replace a T/R relay -- I'd guess at least 5-6 years, and my operation
is 90% CW. I do NOT usually do QSK with those amps though, because of
operating speed, the complexity of keying loops with SO2R operation,
and not wanting to have to replace a T/R relay in the middle of a
contest.
73, Jim K9YC
On Sun,8/21/2016 1:01 PM, Paul Christensen wrote: Jim,
If you're interested in a premium T/R relay, Gigavac makes the GH-1
model and is identical to the Kilovac HC-1 and Jennings RJ-1, all of
which have been time-tested over several decades.
Gigavac sells direct to us:
http://www.gigavac.com/catalog/amateur-radio
Or, check with Alan Bond:
http://www.mgs4u.com/RF-Microwave/vacuum-relays-SPDT.htm
You'll need to specify coil voltage as all three vacuum relays are
produced with several popular voltage ratings.
Paul, W9AC
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
w3ka@lycos.com
Sent: Sunday, August 21, 2016 2:49 PM
To: tentec@contesting.com
Subject: [TenTec] Replacement output T/R relays for TT linear amps.
Greetings to the group.. After years of QSK CW operation, the
output T/R relays in my TT Centaur 411, and Centurion 422B are in need
of replacement.
When requesting parts info from Ten Tec, there have been no replies
to my emails. Does anyone have a generic source (Mouser or Digi-key
for example) and part numbers for the appropriate replacement relays?
Tnx.. 73, Jim W3KA
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