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Re: GE Mastr II Transmit drops after 3-4 seconds

 

You can try replacing Q1 first but I think it might be a U1 problem in which case it may be cheaper to try another card from eBay or someone on the list.


On Fri, May 9, 2025, 12:39 Lou via <ciotti.louis=[email protected]> wrote:
Also.? If I place a clip lead on the cathode of the LED and ground the lead, the symptoms are the same as previously mentioned.? It transmits for a bit then drops.??
Re: GE Mastr II Transmit drops after 3-4 seconds

 

Also.? If I place a clip lead on the cathode of the LED and ground the lead, the symptoms are the same as previously mentioned.? It transmits for a bit then drops.??
Re: GE Mastr II Transmit drops after 3-4 seconds

 

So +10V is pretty steady at 10.7V
?
TX OSC +10V reads ~0.2V with no RX (i.e. TX not expected).? When I expect transmit, this reads ~12V then drops to 10.7V when the output power drops.??
Re: Heliax

 

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From:[email protected] <[email protected]> on behalf of Jim Barbour via groups.io <wd8chl@...>
Sent:?Friday, May 9, 2025 10:47 AM
To:[email protected] <[email protected]>
Subject:?Re: [repeater-builder] Heliax
?
I thought Andrew stopped making LDF a long time ago. Where are they
getting it?

On 5/8/2025 3:11 PM, Dan Newby via groups.io wrote:
> Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot.
> You might even get a lower price buying 300ft at one time.
>
> ?<>
>
> Hope this helps,
> Dan
> WD4LUR
>
Re: Speaking of Hamvention

 

Might be interested in the call box ¡­. Do you have the programming cable and software?
We¡¯re gonna be at spot numbers?
7773, 7772, 7872

Martin



Martin L. Grillo EMT-P, CIC, EMC
COM L Inst. / ITSL(t) / COM?T / INTD / INCM / RADO / AUXC Inst
W1EMR / Amateur Extra?
PGGB063396 / GROL/ R

8 EMS - 37 PAPD - 23 NYPD - 343 FDNY
Never forget our Brother & Sister Heroes 9/11/01.?
It was not how they died that made them heroes.....
It was how they lived!
?
Emergency Medical Rescue of New York City's?30th Anniversary 1995 - 2025

Website?
Telephone?718 474 0680
Email:?info@...


On Fri, May 9, 2025 at 14:57 Duane Hall, AB8QU via <duane=[email protected]> wrote:

Warehouse reclamation 2025 (aka Hamvention)


Infield Spaces 7576-7580


GE Ericsson VGE Voice Guard Keyloader? Rare? 19A148910P4 (Option V4028) with LBI-31684A
3x Connect Systems, Inc.? LT-4200 LTR Trunking controller New in box. Use for 1 rack space project box? Cheap.
3x CPI DC remotes DR10? New in box

Ritron RQX-156-XT Outpost call box. VHF 1W Vandal resistant. New in box.

RME-45 Communications Receiver 1946/47 Vintage

WWV Standard Frequency Calibrator RH-10? Browning Laboratories Inc
Gold Plated PL259 connectors
Heathkit manuals (left overs from last year)


and a bunch of other junk.


Have a safe trip, hope to see you there!



Duane


On 5/9/2025 12:38 PM, n6lrv@... via wrote:
We're making the trip again all the way from Southern California. Assuming we get there, we'll have a variety of gear available including;

four lowband Syntor X9000's with cables and control heads,
three UHF MastrII mobiles,
two new in the box lowband Maratracs w/accessories,
one UHF Spectra Desktrac,
a variety of Motorola dash mount mobiles,
Alliance HD-73 rotator,
a pretty little Collins KWM-1,
a Heathkit SB-100 w/power supply,?
assorted parts, test equipment and other stuff from estates,
and lots more.

We're in the middle of the infield, spaces 7747-7750.

Gary
Re: Speaking of Hamvention

 

¿ªÔÆÌåÓý

Warehouse reclamation 2025 (aka Hamvention)


Infield Spaces 7576-7580


GE Ericsson VGE Voice Guard Keyloader? Rare? 19A148910P4 (Option V4028) with LBI-31684A
3x Connect Systems, Inc.? LT-4200 LTR Trunking controller New in box. Use for 1 rack space project box? Cheap.
3x CPI DC remotes DR10? New in box

Ritron RQX-156-XT Outpost call box. VHF 1W Vandal resistant. New in box.

RME-45 Communications Receiver 1946/47 Vintage

WWV Standard Frequency Calibrator RH-10? Browning Laboratories Inc
Gold Plated PL259 connectors
Heathkit manuals (left overs from last year)


and a bunch of other junk.


Have a safe trip, hope to see you there!



Duane


On 5/9/2025 12:38 PM, n6lrv@... via groups.io wrote:

We're making the trip again all the way from Southern California. Assuming we get there, we'll have a variety of gear available including;

four lowband Syntor X9000's with cables and control heads,
three UHF MastrII mobiles,
two new in the box lowband Maratracs w/accessories,
one UHF Spectra Desktrac,
a variety of Motorola dash mount mobiles,
Alliance HD-73 rotator,
a pretty little Collins KWM-1,
a Heathkit SB-100 w/power supply,?
assorted parts, test equipment and other stuff from estates,
and lots more.

We're in the middle of the infield, spaces 7747-7750.

Gary
Re: Packet Node at an FM Broadcast site

 

Not to mention that if you put a circulator on the packet radio, it will pass transmit, but any receive signal will get ported to the dummy load.

On 5/8/2025 7:25 PM, Jeff DePolo WN3A via groups.io wrote:
> an FM broadcast site. The repeater has an RF circulator with dummy
load installed to keep FM

> Broadcast out of the TX side of the repeater. Is there anything that
I can do to protect the packet

> radio ? Thanks for any and all suggestions and direction.
The isolator is likely doing little to keep the FM out of the repeater transmitter.Isolators only provide a significant degree of directivity within a fairly narrow range.Given the wide frequency differential, bandpass filtering is your friend in this case, both as far as your repeater goes as well as the proposed packet station.Given that packet is single-frequency that makes things that much easier.
--- Jeff WN3A
Re: Heliax

 

I thought Andrew stopped making LDF a long time ago. Where are they getting it?

On 5/8/2025 3:11 PM, Dan Newby via groups.io wrote:
Davis RF has the best price I have seen on LDF4-50A at $1.87 per foot. You might even get a lower price buying 300ft at one time.
<>
Hope this helps,
Dan
WD4LUR
Speaking of Hamvention

 

¿ªÔÆÌåÓý

We're making the trip again all the way from Southern California. Assuming we get there, we'll have a variety of gear available including;

four lowband Syntor X9000's with cables and control heads,
three UHF MastrII mobiles,
two new in the box lowband Maratracs w/accessories,
one UHF Spectra Desktrac,
a variety of Motorola dash mount mobiles,
Alliance HD-73 rotator,
a pretty little Collins KWM-1,
a Heathkit SB-100 w/power supply,?
assorted parts, test equipment and other stuff from estates,
and lots more.

We're in the middle of the infield, spaces 7747-7750.

Gary
FS Guy Wire at Hamvention

 

Guys,?

I have several pieces of galvanized 7-strand steel antenna guy wire that are looking for a new home.? If anyone here wants a piece, I'll bring it with me to my fleamarket space at the Hamvention.

Here is a list of the individual pieces (one of each) and my asking price:
185 Feet of 1/4" - $45
165 Feet of 1/4" - $40
58 Feet of 1/4" - $14
50 Feet of 1/4" - $12
34 Feet of 1/4" - $8
42 Feet of 5/16" - $15

Lengths shown are close, but may not be exact.? I also have several end loops and splicers that work with the guy wire.? If nobody is interested in any of these pieces, I won't bring them with me, so if you're interested, please let me know before Tuesday and I'll load them into my van.? Otherwise, I won't bring any of them.? You can email me direct to:? w3dtn@...

I will also have some G.E. MASTR II items, including several good 100 Watt VHF P.A.'s, 3 VHF splitter/combiners for paralleling two 100 Watt power amplifiers to get 200 Watts out, and a number of other MII items including some Bird Elex, Decibel Prod., and a lot of other stuph.

Please stop by my fleamarket spaces 9404 and 9405 (at the very North end of the fleamarket, not far from the home-made icecream truck) and say "HI".

Y'all have a safe trip to and from the Hamvention!

73, Gary? W3DTN
Re: GE Mastr II Transmit drops after 3-4 seconds

 

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FYI

I have many GE 10 volt regulator modules if anyone wants them for $25.00 ea., shipped UPS included.

?

Regards,

?

Charles F. Adams K3HKZ

Industrial Communications Co.

121 N Sitgreaves Street

Easton, PA 18042

Office 610-253-1214

Cell 610-360-0050

Fax 610-253-4504

?

From: [email protected] <[email protected]> On Behalf Of neal Newman via groups.io
Sent: Thursday, May 8, 2025 8:00 PM
To: [email protected]
Subject: Re: [repeater-builder] GE Mastr II Transmit drops after 3-4 seconds

?

?It helps if we know what repeater it is. Sounds like a ge Mastr iI

?What controller are you using. Is this a new issue on an existing ?system?or a. We repeater. That your putting together

?Neal

?

On Thursday, May 8, 2025, 7:46 PM, Lou via groups.io <ciotti.louis@...> wrote:

Need some help debugging our repeater.

?

Here are the Symptoms:

?

1) transmit drops out after 3-4 seconds.

2) TX led on 10V regulator control card stays on another few. Seconds after TX drops.?
3) as long as LED is on after it drops, there is no output.

4) LED turns off and we have output power again for the 3-4 seconds, then it drops.?
5) When the transmit power drops I can head a real fair click/noise that seems to come from the 10v regulator control card.

?

Everything else seems normal.

?

I am guessing something on the 10v Regulator Control is flaky.

?

thoughts?


Thanks,

?

Lou

K2LRV

?
Re: Heliax center pins

 

tessco.com is one dealer that has a lot.....
and they can be? "mighty proud" of them also (when it comes to price)....
at least it allows you a reference to compare against
?
?
Re: Heliax center pins

 

¿ªÔÆÌåÓý

You have to tell us what exactly you are looking for. Connector type, gender, etc.

?

Matt

AL0R

?

From: [email protected] <[email protected]> On Behalf Of Dr David K5RAV via groups.io
Sent: Thursday, May 8, 2025 20:30
To: [email protected]
Subject: [repeater-builder] Heliax center pins

?

I am looking for center pins for Andrew Heliax connectors for both 1/2 inch LDF4-50 and 7/8th inch LDF5-50.? Male or female.

Thanks de David, K5RAV
Heliax center pins

 

I am looking for center pins for Andrew Heliax connectors for both 1/2 inch LDF4-50 and 7/8th inch LDF5-50.? Male or female.
Thanks de David, K5RAV
Re: GE Mastr II Transmit drops after 3-4 seconds

 

Sounds like you are losing your TX OSC Control +10V.? You can watch that line in the fold down tray on the exciter pin header with a volt meter.

If that is is case remove the power supply card and put a clip lead on the cathode side of the red TX LED, reinstall and touch the clip lead to ground.?

If you loose the TX OSC +10, you have a problem with U1 or Q1. If the TX OSC stays steady at +10 with the clip lead then I would suspect Q5 of going weak.
Re: Andrew Heliax connector Center Pins

 

I can usually find good deals on eBay.

Dave Bates


On Thu, May 8, 2025 at 7:57?PM Dave Bates <kf0xq1@...> wrote:
I just use the PSA series of male and female N connectors . No soldering.

Dave Bates, KF?XQ?


On Thu, May 8, 2025 at 7:53?PM Joe via <k1ike_mail=[email protected]> wrote:
What connector?

Joe, K1ike

On 5/8/2025 8:30 PM, Dr David K5RAV via wrote:
> Does anyone know of a source for Andrew Heliax connector center pins??
> Thanks de David, K5RAV
>






Re: Andrew Heliax connector Center Pins

 

I just use the PSA series of male and female N connectors . No soldering.

Dave Bates, KF?XQ?


On Thu, May 8, 2025 at 7:53?PM Joe via <k1ike_mail=[email protected]> wrote:
What connector?

Joe, K1ike

On 5/8/2025 8:30 PM, Dr David K5RAV via wrote:
> Does anyone know of a source for Andrew Heliax connector center pins??
> Thanks de David, K5RAV
>






Re: Andrew Heliax connector Center Pins

 

What connector?

Joe, K1ike

On 5/8/2025 8:30 PM, Dr David K5RAV via groups.io wrote:
Does anyone know of a source for Andrew Heliax connector center pins? Thanks de David, K5RAV
Re: GE Mastr II Transmit drops after 3-4 seconds

 

Have you watched the 10 volts to make sure it's not changing?

Joe, K1ike

On 5/8/2025 8:14 PM, Lou via groups.io wrote:
It is a GE Master II station. ?This is the rack style with the receiver fold down drawer and the card slots on the top. ?The controller is an RC-210. ? This has worked for years with no issues, and this just started to act up a yesterday.
the Symptom is the same if I key the transmitter using the slide RMT PTT switch in the 10v card so it is not the controller.
Re: Andrew Heliax connector Center Pins

 

You might try the RF Connection in Gaithersburg, MD.


Rod
N8RAT


On Thursday, May 8, 2025 at 08:30:35 PM EDT, Dr David K5RAV via groups.io <drwoolweaver@...> wrote:


Does anyone know of a source for Andrew Heliax connector center pins?? Thanks de David, K5RAV
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